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Senior Software Engineer Digital Assets Infrastructure Remote (UK) About Zumo Zumo builds the infrastructure that makes digital assets work for businesses. Our platform provides a range of digital asset services through a suite of APIs and tools, enabling partners to build and scale their own products on top of our infrastructure. We’re a UK-based team driven by transparency, accessibility, and a belief that the benefits of blockchain technology should be available to everyone. We’re building something meaningful and we need engineers who care about quality to help us do it. The Role We’re looking for a Senior Software Engineer to join our established engineering team, reporting directly to the CTO. You’ll work across our core digital asset infrastructure as well as the client-facing portals and dashboards that our partners use day-to-day. This is a backend-heavy full-stack role. You’ll spend most of your time designing and building APIs and services in Node.js and TypeScript, but you’ll also own frontend work in React for partner-facing applications. We want someone who’s excellent on the backend and confident enough on the frontend to ship polished, production-quality interfaces. We use AI development tools daily across the team, whether that’s for code generation, debugging, or speeding up routine work. We expect you to be comfortable doing the same. You don’t need blockchain experience. If you have a genuine interest in digital assets and want to learn the domain, we’ll teach you the rest. This is a remote UK-based role, with mandatory in-person team meetups in Edinburgh on a regular basis. Responsibilities • Design, build, and maintain backend services (Node.js) powering our digital asset platform as well as client-facing portals and dashboards (React), • Own features end-to-end: from architecture and design through implementation, testing and deployment to maintenance, • Design and evolve well-structured, documented APIs, • Continuously improve and optimise the technical infrastructure for performance, reliability, and maintainability, • Interact with partners and integration clients to understand their needs and support adoption, • Engage with the team via code reviews, knowledge sharing sessions and daily work, • Collaboratively drive engineering standards and technical decisions, • Work closely with Product to ship optimal technical solutions and maintain delivery transparency Skills & Experience What we’re looking for • 5+ years of professional software development experience, • Strong Node.js and TypeScript skills. This is the core of our stack, • Understanding of software design and architecture principles, ability to make substantiated technical decisions in collaboration with the team, • Understanding of distributed systems, microservices and event-driven architectures, • Solid experience designing and building RESTful APIs, • Comfortable working with React to build client-facing web applications or willing to learn, • Confident skills in relational databases, particularly PostgreSQL, • A disciplined approach to testing. You write tests as a matter of course, • Clear communication and the ability to work autonomously in a remote team, • Ownership mindset - you own engineering outcomes end to end and are proactive about finding the best solution to the problem and continuously improving our technology and client experience, • A team player - we believe that working closely together, helping each other and learning from each other is critical for delivering great outcomes Nice to have • Experience with AWS, infrastructure in general and tools to manage it (Terraform, CDK), • Background in fintech, payments, or regulated environments, • Front-end or full-stack experience, • Any exposure to digital assets, blockchain, or crypto, but genuine curiosity is what matters most Our Tech Stack • Node.js / TypeScript, • AWS (ECS / Fargate, Lambda, RDS, SNS, SQS, API Gateway, Elasticache), • React, • PostgreSQL, • Redis Salary £60k - 75k p.a. Benefits Our mission is to create an environment where you can do the best work of your career. • Remote-first: We have an office in Edinburgh, but remote is our primary way of working, giving you the flexibility to work from wherever suits you., • Generous time off: 40 days of holiday per year., • Professional development: A culture of learning, curiosity, and ongoing growth., • Pension: Flexibility to opt in to our voluntary company pension scheme. Our Values Inclusion inspires Zumo is accessible to everyone, everywhere. We believe the benefits of digital assets and blockchain are for everyone, and our decisions balance people, profit, and planet. Transparency wins We build with usability and security at the core. We make the complex simple and never hide behind jargon. Unshakable commitment We bring our best every day. Great work comes from a calm, focused environment, and we give feedback with respect. Love the adventure We don’t take the easy path unless it’s the right one. We explore constantly, and we accept failure as part of getting it right. At Zumo, we believe in the strength that difference brings to our business, our culture, and our community. We value the perspectives and experiences of all our colleagues and are proud to be an equal opportunity employer. Interested? Please apply via LinkedIn.

Spacelabs is looking for a Junior Flutter / Dart Software Engineer to join our R&D engineering team and contribute to the development of high‑quality mobile applications that support our mission of improving healthcare worldwide. This is a hands‑on role where you’ll work closely with senior engineers and cross‑functional teams to build performant, reliable, and maintainable applications. You’ll grow your skills in mobile development, modern software architecture, and CI/CD practices while contributing to the evolution of our mobile platform. Responsibilities: • Design, develop, test, and maintain high‑quality mobile applications using Flutter and Dart, • Contribute to application architecture and technical design under senior guidance, • Build and maintain data‑driven apps that integrate with RESTful backend services, • Develop responsive, performant, and accessible UI components, • Work with cross‑functional teams to define requirements and technical solutions, • Participate in design, architecture, and code reviews, • Deliver assigned tasks on time as part of an Agile/Scrum team, • Support CI/CD pipelines and automated build/test workflows, • Suggest improvements to tooling, frameworks, and development practices, • Write clean, maintainable, testable code, • Work effectively in asynchronous and multi‑threaded environments, • (Optional but valued) Contribute within regulated or quality‑focused development environments, • Uphold company values of Integrity, Innovation, Accountability, and Teamwork, • Perform additional tasks as needed to support team and business goals Required Qualifications • 2+ years of software development experience, including hands‑on Flutter development, • 2+ years of professional mobile application development, • Proficiency in Dart and experience with at least one additional mobile language (Swift, Kotlin, Java, Objective‑C), • Solid understanding of mobile app architecture and state management patterns, • Understanding of asynchronous and multi‑threaded programming, • Good knowledge of OOP, data structures, algorithms, and problem‑solving, • Experience with Git, Azure DevOps and/or GitHub, • Familiarity with CI/CD workflows for mobile apps, • Ability to work effectively in an Agile/Scrum environment, • Self‑motivated, proactive, and eager to learn, • Strong communication and collaboration skills, ideally with distributed or international teams If you’re passionate about building high‑impact mobile applications and want to help shape the future of healthcare technology, apply now and join our mission. NOTICE TO THIRD PARTY AGENCIES OSI Systems, Inc. and its subsidiaries (collectively “OSI”) does not accept unsolicited resumes from recruiters or employment agencies. If any person or entity, including a recruiter or agency, submits any information, including any resume or information regarding any potential candidate, without a signed agreement in place with OSI, OSI explicitly reserves the right to use such information, and pursue and/or hire such candidates, without any financial obligation to the person, recruiter or agency. Any unsolicited information or resumes, including those submitted directly to hiring managers, are considered and deemed to be the property of OSI. OSI Systems, Inc. has three operating divisions: (a) Security, providing security and inspection systems, turnkey security screening solutions and related services; (b) Healthcare, providing patient monitoring, diagnostic cardiology and anesthesia systems; and (c) Optoelectronics and Manufacturing, providing specialized electronic components and electronic manufacturing services for original equipment manufacturers with applications in the defense, aerospace, medical and industrial markets, among others.

Spacelabs is seeking an experienced Senior Flutter / Dart Software Engineer to join our R&D team and lead the design, development, and delivery of high‑quality cross‑platform mobile applications. This role is hands‑on and highly technical, requiring strong engineering fundamentals, deep Flutter expertise, and experience building robust applications—ideally in regulated or quality‑focused environments. You will collaborate closely with cross‑functional teams, shape application architecture, drive best practices, and help evolve our mobile development strategy. Key Responsibilities: • Design, develop, test, document, and maintain high‑quality mobile apps using Flutter & Dart, • Contribute to application architecture, design decisions, and implementation planning, • Build data‑driven applications integrating with RESTful backend services, • Implement secure‑by‑design and cybersecurity best practices, • Create responsive, performant, and accessible UIs, • Work with cross‑functional teams to define requirements and technical solutions, • Participate in architecture, design, and code reviews, • Ensure timely delivery of software and documentation, • Contribute to CI/CD pipelines and automated build/test/deploy workflows, • Support secure development lifecycle activities and dependency management, • Suggest improvements to tooling, frameworks, and engineering practices, • Write clean, maintainable, testable code, • Work effectively in multi‑threaded and asynchronous environments, • Mentor junior engineers and promote engineering excellence, • Operate within Agile/Scrum processes, • Uphold company values and ethical standards Required Qualifications: • 8+ years of software development experience, • 3+ years advanced Flutter/Dart development, • 4+ years building data‑driven mobile applications, • Expert in Dart + strong experience in Swift, Kotlin, Java, or Objective‑C, • Strong understanding of mobile architecture & state management, • Experience building network layers using RESTful APIs, • Solid grasp of OOP, data structures, algorithms, and complexity analysis, • Proficient with Git, Azure DevOps and/or GitHub, • Experience with CI/CD for mobile development, • Self‑motivated, proactive, and able to work independently, • Strong communication and collaboration skills, including distributed teams Desirable: • Experience with Bluetooth/BLE integrations, • Medical device or regulated environment experience, • Experience with ISO 13485 or similar QMS, • Knowledge of IEC 62304, ISO 13485, or other relevant standards If you’re passionate about building high‑impact mobile applications and want to help shape the future of healthcare technology, apply now and join our mission. NOTICE TO THIRD PARTY AGENCIES: OSI Systems, Inc. and its subsidiaries (collectively “OSI”) does not accept unsolicited resumes from recruiters or employment agencies. If any person or entity, including a recruiter or agency, submits any information, including any resume or information regarding any potential candidate, without a signed agreement in place with OSI, OSI explicitly reserves the right to use such information, and pursue and/or hire such candidates, without any financial obligation to the person, recruiter or agency. Any unsolicited information or resumes, including those submitted directly to hiring managers, are considered and deemed to be the property of OSI. OSI Systems, Inc. has three operating divisions: (a) Security, providing security and inspection systems, turnkey security screening solutions and related services; (b) Healthcare, providing patient monitoring, diagnostic cardiology and anesthesia systems; and (c) Optoelectronics and Manufacturing, providing specialized electronic components and electronic manufacturing services for original equipment manufacturers with applications in the defense, aerospace, medical and industrial markets, among others.

🚀 Hiring: Java Fullstack Engineer (Contract – Long Term) 📍 Edinburgh (Hybrid – 2 days/week onsite) ⏱️ Start: ASAP (within 2 weeks) We’re looking for a hands-on Java Backend Engineer to join a major banking programme in Edinburgh. This is a long-term contract role focused on delivering high-quality backend services within an established architecture. 🔧 Role Overview • Backend-focused Java development (Spring Boot / REST APIs), • Working within a microservices environment, • Contributing to end-to-end delivery: coding, testing, debugging, and deployment, • Collaborating within an agile engineering team ✅ Must-Have Skills • Strong experience with Java (9+), • Spring Boot / Spring Framework (solid hands-on experience), • Experience building and consuming REST APIs, • Exposure to microservices-based applications, • Comfortable working in existing codebases and following engineering standards 💡 Nice to Have • Banking / financial services experience, • Exposure to CI/CD, Docker, cloud environments, • Experience with event-driven architectures ⚠️ Important Info • Candidates must be able to start within the next 2 weeks, • This role requires onsite presence in Edinburgh (min 2 days/week)

Spacelabs is seeking an experienced Senior Flutter / Dart Software Engineer to join our R&D team and lead the design, development, and delivery of high‑quality cross‑platform mobile applications. This role is hands‑on and highly technical, requiring strong engineering fundamentals, deep Flutter expertise, and experience building robust applications—ideally in regulated or quality‑focused environments. You will collaborate closely with cross‑functional teams, shape application architecture, drive best practices, and help evolve our mobile development strategy. Key Responsibilities: • Design, develop, test, document, and maintain high‑quality mobile apps using Flutter & Dart, • Contribute to application architecture, design decisions, and implementation planning, • Build data‑driven applications integrating with RESTful backend services, • Implement secure‑by‑design and cybersecurity best practices, • Create responsive, performant, and accessible UIs, • Work with cross‑functional teams to define requirements and technical solutions, • Participate in architecture, design, and code reviews, • Ensure timely delivery of software and documentation, • Contribute to CI/CD pipelines and automated build/test/deploy workflows, • Support secure development lifecycle activities and dependency management, • Suggest improvements to tooling, frameworks, and engineering practices, • Write clean, maintainable, testable code, • Work effectively in multi‑threaded and asynchronous environments, • Mentor junior engineers and promote engineering excellence, • Operate within Agile/Scrum processes, • Uphold company values and ethical standards Required Qualifications: • 8+ years of software development experience, • 3+ years advanced Flutter/Dart development, • 4+ years building data‑driven mobile applications, • Expert in Dart + strong experience in Swift, Kotlin, Java, or Objective‑C, • Strong understanding of mobile architecture & state management, • Experience building network layers using RESTful APIs, • Solid grasp of OOP, data structures, algorithms, and complexity analysis, • Proficient with Git, Azure DevOps and/or GitHub, • Experience with CI/CD for mobile development, • Self‑motivated, proactive, and able to work independently, • Strong communication and collaboration skills, including distributed teams Desirable: • Experience with Bluetooth/BLE integrations, • Medical device or regulated environment experience, • Experience with ISO 13485 or similar QMS, • Knowledge of IEC 62304, ISO 13485, or other relevant standards If you’re passionate about building high‑impact mobile applications and want to help shape the future of healthcare technology, apply now and join our mission. NOTICE TO THIRD PARTY AGENCIES: OSI Systems, Inc. and its subsidiaries (collectively “OSI”) does not accept unsolicited resumes from recruiters or employment agencies. If any person or entity, including a recruiter or agency, submits any information, including any resume or information regarding any potential candidate, without a signed agreement in place with OSI, OSI explicitly reserves the right to use such information, and pursue and/or hire such candidates, without any financial obligation to the person, recruiter or agency. Any unsolicited information or resumes, including those submitted directly to hiring managers, are considered and deemed to be the property of OSI. OSI Systems, Inc. has three operating divisions: (a) Security, providing security and inspection systems, turnkey security screening solutions and related services; (b) Healthcare, providing patient monitoring, diagnostic cardiology and anesthesia systems; and (c) Optoelectronics and Manufacturing, providing specialized electronic components and electronic manufacturing services for original equipment manufacturers with applications in the defense, aerospace, medical and industrial markets, among others.

The Senior Flutter / Dart Software Engineer will be a key member of the Spacelabs R&D engineering team, responsible for the design, development, and delivery of high-quality mobile applications. This role requires deep expertise in cross-platform app development, strong software engineering fundamentals, and ideally experience delivering robust applications in regulated or quality-focused environments. The successful candidate will act as a hands-on senior engineer and technical contributor, collaborating closely with cross-functional teams to design and implement performant, and maintainable applications. A strong understanding of modern software architecture and CI/CD practices is essential. You will help shape application architecture, advocate for best practices, and contribute to the evolution of our mobile development strategy. JOB RESPONSIBILITIES: • Design, develop, test, document, and maintain high-quality mobile applications. Primarily Flutter using Dart., • Contribute to application architecture, technical design decisions, and implementation planning., • Develop and maintain data-driven mobile applications that integrate with RESTful backend services., • Incorporate secure-by-design a...

We're looking for a hands-on Tech Lead who builds, ships, and leads by example. You'll own architecture, contribute across the stack, and work closely with Product to turn ambiguous problems into impactful solutions. You'll also integrate AI/LLM capabilities into production systems, ensuring reliable, real-world outcomes. Please make an application promptly if you are a good match for this role due to high levels of interest. Key Responsibilities • Translate business needs into scalable technical solutions, • Design and evolve system architecture, • Contribute across frontend, backend, and infrastructure, • Drive best practices in CI/CD, testing, and observability, • Build and optimise AI-powered features (LLMs, inference pipelines), • Communicate clearly with technical and non-technical stakeholders, • 7+ years' software engineering experience, • Proven Tech Lead or senior engineer experience, • Strong product mindset and ownership, • Full-stack capability (strong Python/backend focus), • Experience with AI/LLM systems (or ability to ramp quickly), • Excellent communication and leadership skills xrnqpay, • Experience with DDD, CQRS, or event-driven systems, • Background in large-scale or data-intensive platforms

Location: Edinburgh (Hybrid) | Practice Area: Technology & Engineering | Type: Permanent.Architect the next generation of financial platforms.We’re looking for a Principal Backend Engineer (Java) to join our Technology & Engineering team.This leadership-level role calls for deep technical acumen,

A technology and data company in Scotland is seeking a Senior Backend Software Engineer to develop and deliver innovative solutions within the financial industry. Expect to collaborate with multi-functional teams, build novel applications, and contribute to the existing engineering team. The ideal c

A leading consulting firm in Edinburgh is looking for a Principal Backend Engineer (Java) to architect secure, scalable backend systems. You'll need expertise in Java, AWS cloud solutions, and strong coaching capabilities.

A leading tech firm in the United Kingdom seeks a skilled developer to join their team.As a member of this innovative company, you'll collaborate virtually with talented colleagues while contributing to the development of high-quality code for open-source projects.This role requires proficiency in P

As we continue to scale, a need has opened up for a Senior Backend Software Engineer who would bring to bear their unique expertise with the existing Engineering team, with exciting opportunities to extend the scope for this role longer term, as the product continues to push onward into future globa

A leading financial services firm is seeking an experienced Backend Engineer to join their growing Engineering team in Edinburgh. The role involves collaborating within agile teams while delivering scalable backend services using Java and contributing to high-impact projects.

A leading digital consultancy in the UK is seeking a skilled Java Developer to join their agile team.You will focus on developing RESTful APIs and integrating with third-party services while collaborating closely with various project stakeholders.Ideal candidates will have strong Java skills and a p

We’re seeking a Senior Backend Engineer (Java) to join our Technology & Engineering team. Working on high-impact platforms for Tier 1 financial institutions, you’ll lead backend design, champion agile best practices, and contribute to the evolution of modern banking technology.

A leading technology platform in the United Kingdom is seeking a Software Development Engineer to develop high-quality software solutions for investment analysis. The role focuses on enhancing investment reporting tools, participating in Agile practices, and collaborating closely within AI-based eng

We are seeking an experienced backend software engineer to join the Platform Integrations team! We are looking for a senior engineer to join us in building client onboarding solutions, to enable clients to bring their data on to our systems, allowing them to report, analyze, and understand their dat

A digital consultancy in Scotland is seeking a Lead Backend Engineer who can build robust systems using Node.The role includes mentoring junior engineers and advocating best engineering practices, while collaborating closely with project teams to ensure successful outcomes.Ideal candidates will have

The role focuses on building robust client onboarding solutions, allowing clients to centralize and analyze their data effectively.

A tech-enabled brand protection company is seeking a Principal Engineer to join their Edinburgh team.The role involves designing, building, and maintaining backend services and APIs while mentoring less experienced engineers.Candidates should have over 7 years of software engineering experience, pro

A global data and AI platform is seeking a Backend Software Engineer to join their team in Edinburgh. Required qualifications include a degree in a STEM field and experience in backend development, particularly with Java.

SymphoMe is seeking a highly skilled and innovative AI Music Research Engineer to join our team. Join our passionate backend team of music enthusiasts and help build an innovative music education app for students! We are looking for a skilled and motivated Music AI Research Engineer to join us at Sy

A global technology enterprise in Edinburgh is seeking a Senior Java Backend Developer with over 15 years of experience. The ideal candidate will possess a solid foundation in software engineering principles and relevant technologies.

A leading financial technology company in the United Kingdom is seeking a Sr.Software Development Engineer to join their Alternative Assets Engineering team.The ideal candidate has over 6 years of experience programming in Java and a strong background in financial markets.Responsibilities include de

A leading financial consulting firm is seeking a Senior Backend Engineer (Java) in Edinburgh for a hybrid role.

A tech firm in Edinburgh is looking for a skilled.NET Developer to design and maintain high-quality services using C# and.The candidate will be responsible for building and consuming RESTful APIs, participating in code reviews, and applying DevOps practices.This position requires solid experience in

A leading consulting firm is looking for a Principal Backend Engineer (Java) in Edinburgh.This hybrid role involves designing secure and scalable backend systems and leading technical teams.Candidates should have expertise in Java, Spring Boot, and AWS solutions.This position offers a competitive be

Collaborate with engineering leadership and staff engineers to recruit, develop, and support engineers. Several years of Backend Software Engineering experience at Senior, Principal, or Staff level. Experience mentoring engineers and contributing to technical decisions pragmatically.

A dynamic technology company based in Edinburgh seeks a Staff Engineer to lead major initiatives and enhance user experiences across teams. You will drive engineering excellence and mentor engineers while utilizing modern technologies.

A financial services consulting firm is seeking a Backend Software Engineer skilled in Java to join their Edinburgh team (hybrid role). This position focuses on building scalable backend services and designing microservices.

Backend Software Engineer - Java at Capco.Location: Edinburgh (Hybrid) | Type: Permanent.Capco is growing our Engineering team and we’re looking for experienced Backend Engineers with strong Java skills and a passion for delivering innovative solutions in financial services.If you enjoy solving co

A leading agricultural research institution is looking for two Senior Software Engineers for their innovative Agrecalc software platform. You can apply as a Frontend or Backend Engineer, focusing on technologies like JavaScript, ReactJS for Frontend, and C#,.

Senior Software Development Engineer in Test. Senior Software Development Engineer in Test (SDET). Python Backend Junior Software Engineer - Remote 4 days a week (Europe).

A leading digital consultancy in Edinburgh seeks a skilled developer to create backend services and APIs, ensuring high-quality, maintainable code.

A leading technology consultancy is seeking a Senior Backend Engineer to design and develop cloud-native solutions using Java and Spring Boot.

We’re looking for a Principal Backend Engineer (Java) to join our Technology & Engineering team. You’ll architect cloud-native backend systems, shape our engineering standards, and mentor teams to deliver high-performance platforms for global financial clients. Lead the design and development of

Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS. Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS. They've completed Series A funding, raising $29 million across three funding rounds, and are now seeking a Senior Backend Engineer.

Collaborate with product and engineering managers to define priorities and deliverables.

This role goes beyond traditional backend engineering. If you want your engineering work to have real-world impact, this is where it happens.

Built by engineers for engineers, The Teleport Access Platform delivers on-demand, least privileged access to infrastructure based on cryptographic identity and zero trust, with built-in identity security and policy governance, making the happy path for engineers the secure path. This gives engineer

A growing LegalTech company in the United Kingdom seeks a Senior Software Developer with a backend focus. With a competitive salary starting from €60,000, higher based on experience, the ideal candidate will have over five years of backend experience in Java and Python.

The candidate will work with advanced technologies, focusing on backend development using Go, while leveraging cloud platforms like GCP or AWS. A global technology leader is seeking a Staff Software Engineer to design and build high-performance data pipelines.

A leading financial technology company in the UK is seeking a Software Engineer with extensive experience in developing cloud-based systems using Golang.

As a Senior Backend Engineer specializing in Graph technologies, you will design, develop, and maintain the core backend systems that power sophisticated data access and analytics platforms. Senior Software Engineer - Backend (Graph) – EMEA. Strong problem-solving skills, attention to detail, and

The role involves significant ownership of scalable backend applications.

As a Senior Software Engineer, Backend on Camunda’s Distributed Systems team, you’ll help build and evolve the durable, highly available, horizontally scalable streaming platform that underpins Camunda 8’s Orchestration Cluster and powers mission‑critical processes for customers around the w