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Full Stack Developer - Data Centres Role Overview In this role, you will bridge the gap between robust backend systems and intuitive, high-performance user interfaces. You will play a key role in designing and building scalable applications, ensuring both the technical architecture and the user experience meet the highest standards. While the role covers full-stack responsibilities, there is an emphasis on creating seamless user journeys using modern frontend frameworks such as Next.js, alongside building clean, scalable backend services in Python (preferably with FastAPI). A product-first mindset is essential, ensuring the entire stack delivers reliable, high-quality experiences. Key Responsibilities End-to-End Feature Development • Design, develop, and deploy features across the full technology stack, • Translate product requirements into scalable technical solutions, • Build systems from database schema to backend services to frontend components Frontend Development & User Experience • Develop high-performance, responsive interfaces using React and Next.js, • Optimize usability, performance, and responsiveness, • Implement polished UI elements including animations, accessibility improvements, and micro-interactions, • Collaborate with product and design stakeholders to deliver intuitive user journeys Backend Development & API Design • Design and implement efficient backend services in Python, • Build scalable APIs using FastAPI (or similar frameworks such as Flask or Django), • Ensure reliable data flow between backend services and frontend applications, • Maintain high performance, security, and maintainability of backend services Database & Data Architecture • Design and manage relational database structures (e.g., PostgreSQL), • Optimize database queries and application performance, • Ensure data integrity and efficient data models Engineering & Code Quality • Write clean, maintainable, and well-documented code, • Use TypeScript for reliable and scalable frontend development, • Participate in code reviews and contribute to engineering best practices, • Work with modern CI/CD pipelines and automated deployment workflows Team Collaboration • Work closely with product, design, and engineering teams in a remote-first environment, • Collaborate with backend and infrastructure teams to ensure seamless system integration, • Participate in agile development processes including sprint planning and technical discussions, • Contribute to technical documentation and internal knowledge sharing, • Participate in on-call rotations as needed Skills & Experience Essential • Proven experience as a Full Stack Developer building modern web applications, • Strong experience with React, ideally Next.js, • Proficiency with Tailwind CSS and modern frontend state management libraries, • Strong backend development experience using Python, • Experience designing RESTful or GraphQL APIs, • Solid experience with PostgreSQL and relational database design, • Strong knowledge of TypeScript, • Experience using Git in collaborative workflows, • Familiarity with modern CI/CD pipelines and deployment processes Desirable • Experience with FastAPI for high-performance API development, • Experience with Flask or Django frameworks, • Exposure to frontend performance optimization techniques, • Experience in product-focused or startup engineering environments, • Understanding of microservices or distributed application architectures

Full Stack Engineer Financial Services Hertfordshire Job Type - Permanent Salary - Competitive About Us We're a rapidly growing wealth management firm on an ambitious journey to 5x growth over the next 6 years. Our small but mighty data team of 3 has built a cutting-edge platform using open-source technology on AWS, delivering everything from real-time dashboards to innovative web applications. We believe in shipping fast, learning quickly, and building tools that advisers and clients actually love to use. The Opportunity We're looking for a Full-Stack Engineer to join as our 4th team member and own the delivery of critical web applications. This is a hands-on role where you'll build tools that directly impact adviser productivity, operational efficiency, and client experience. You'll work on everything from trading platforms to client presentation tools, with full ownership from concept to production. This isn't about maintaining legacy systems – you'll be building greenfield applications that enable our growth strategy. What You'll Do · Design, build and deploy full-stack web applications using React, Python, and AWS · Own multiple projects simultaneously, from initial requirements through to production deployment · Work directly with advisers and operations teams to understand needs and deliver solutions · Build responsive, intuitive frontends that non-technical users love · Develop robust APIs and backend services integrated with our internal and 3rd party systems · Deploy containerized applications on AWS EKS with robust CI/CD pipelines · Balance "perfect" with "shipped" – knowing when good enough is exactly right · Contribute to technical decisions as we scale Essential Requirements · 3+ years commercial experience building production web applications · Strong React skills (hooks, state management, modern patterns) · Proficient in Python backend development (FastAPI, Flask, or Django) · Cloud technology experience (AWS preferred but happy with Azure and GCP experience) · Experience with Docker, Kubernetes, and Infrastructure as Code · Solid SQL skills and experience with data integration · Experience translating vague business requirements into working software · Track record of delivering projects on aggressive timelines · Comfortable working autonomously with minimal supervision · Excellent communication skills with non-technical stakeholders Desirable Experience · Financial services or wealth management background · Tableau or BI tool integration · dbt, Dagster, or modern data stack tools Our Tech Stack · Frontend: React, TypeScript, Modern CSS · Backend: Python (FastAPI/Flask), Node.js · Data: Apache Iceberg, dbt, Tableau · Infrastructure: AWS EKS, Docker, Terraform What We Offer · Clear project pipeline with high business impact · Progression opportunities as team scales · Modern tech stack with autonomy to choose the right tools · Direct exposure to senior stakeholders and business strategy · Hybrid working with genuine flexibility · Opportunity to shape technology direction at a scaling firm

Backend & DevOps Software Developer. We’re seeking a skilled Backend & DevOps Software Developer to join our Innovative Platforms team. Collaborate with front-end developers and product owners to deliver end-to-end solutions.

NET backend development and strong knowledge of Azure services.

You will play a key role in designing, building, and scaling specific backend applications that support complex scheduling, operational, and data‑driven workflows. Design, develop, and maintain backend services using Python,Django, Graphene, and AWS Lambda. Ensure high performance, scalability, an

We are looking for an awesome Senior Java Backend Developer to join our growing team.

Ensure high performance, scalability, and reliability of backend systems. Strong commercial experience as a backend developer using Python, ideally within a start‑up or scale‑up environment. Experience designing scalable and maintainable backend architectures.

Compensation: Competitive, based on location and experience .Location: UK or Turkey (Hybrid – Office & Remote).Keepnet is an AI-driven SaaS platform experiencing strong, sustained growth in the UK with growing global momentum, helping organisations manage human cyber risk at scale.Keepnet runs

Senior Backend Engineer | Python, FastAPI & Scaling | Security SaaS. Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS. Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS.

Our backend tech stack is Spring Boot with Java/Kotlin/Groovy, MySQL and Opensearch, hosted on AWS. Our frontend is React with Typescript, and you will be expected to contribute small features to the frontend (though the role is at least 95% backend). You're an experienced engineer with multiple ye

The role involves the design and development of backend services and infrastructure for Machine Learning workloads.

We’re hiring a senior backend engineer to join a disciplined, senior team responsible for the platform behind Eequ, where engineers have real ownership and operate with high autonomy. Build and operate the backend platform that powers a real marketplace handling bookings, payments, and reporting f

We are looking for a Senior Backend Engineer to join our new Quantitative Sports team. As a Senior Engineer you will play a critical role in the development and maintenance of the backend aspects of the pricing system for our sportsbook and work alongside our quantitative analysts to deliver our in-

Backend Developer Romsey, Hampshire (Hybrid - 3 days office / 2 remote, flexible)£45,000 - £50,000 + BenefitsOOP, PHP, LaravelMy client build innovative SaaS solutions that help organisations monitor, manage, and optimise critical infrastructure.

Software Architect Java - BackEnd, Back End Google Cloud (GCP).

Design and build scalable backend systems that power Spotify’s internal commerce platform. You have 5+ years of experience building backend services using languages like Python, Java, or similar. Within this mission, the Commerce Platform team builds and operates the backend systems that enable pu

A tech-driven educational platform in the UK is seeking a Senior Backend Engineer to architect high-performance server-side applications.

We deliver, deploy and help integrate backend services alongside external co‑dev clients as part of industry leading game projects, and collaborate to define solutions and implement features on time and to a high standard. Experience in game development and having worked on at least two game title

We are looking for an exceptional Software Engineer, to join our Backend Engineering squad.

You will design and implement backend services in Go, expose clean and secure APIs, and translate infrastructure primitives into product-grade platform capabilities. Design, implement, and maintain backend platform services in Go. Able to work full-stack, with backend as the primary strength and fro

A leading financial consulting firm is seeking a Senior Backend Engineer to design and build cloud-native applications with Java and Spring Boot.

Our vision is to give everyone the belief they can make their move.We aim to make moving simpler, by giving everyone the best place to turn to and return to for access to the tools, expertise, trust, and belief to make it happen.We’re home to the UK’s largest choice of properties and are the go-

This is a hands-on backend role with real ownership. You’ll act as the backend authority within a small, collaborative team, working closely with a Frontend Developer and Senior UX/UI Designer. Develop clean, well-structured backend systems using modern Laravel.

Develop and maintain high‑performance backend services for complex data processing workloads. Ensure optimal performance, quality, and reliability across backend services. Java backend development (Java 17+).

A forward-thinking financial institution in Greater London is seeking a motivated engineer to own complex initiatives and design scalable backend systems.

As a Senior Backend Engineer, you are experienced and excited about building innovative next‑generation social good platforms which empower nonprofits to do their world‑changing work.

A leading property management technology firm in Greater London is seeking an experienced Backend Engineer to join their dynamic team.

A fintech company in London is expanding and seeking Senior and Lead Backend Engineers to design scalable systems and shape modern platforms.

A growing technology startup in London is seeking a Senior Backend Engineer to help shape their next-generation CRM platform. In this role, you'll design and build scalable backend systems using Node.

A technology company in Hackney, London, is seeking a Tech Lead to drive backend and data engineering.

A voice AI startup based in London is seeking a Backend Engineer to join their team. As the second backend engineer, you'll own the core API platform, designing scalable infrastructure for real-time voice interpretation.

We are looking for an exceptional Software Engineer, to join our Backend Engineering squad.

TypeScript) to design and implement backend services for their payment platform.

We primarily work with React on the frontend and Kotlin microservices with Postgres on the backend, with some older services written in Ruby on Rails.

You’ll be UK or EU based and you’ll be working in a team of backend engineers across MPG. We deliver, deploy and help integrate backend services alongside external co-dev clients as part of industry leading game projects, and collaborate to define solutions and implement features on time and to

You will develop robust backend services using Python and participate in the full software development lifecycle.

A tech learning company seeks a Senior Backend Engineer to lead the development of scalable multitenant infrastructure.

Senior Software Engineer, Backend. As a Senior Software Engineer, Backend, you’ll play a critical role in shaping the future of digital payments.

You will work directly with the CTO and your focus will span different areas, with challenges related to our backend infrastructure, from scaling challenges to data processing ones.

LemFi (Series B) is building the go-to financial app for the Global South.Moving to a new country shouldn’t mean starting from zero.What began as fast, affordable remittances is now evolving into a complete platform for multi-currency accounts, payments, credit, and long-term financial growth.You

You’ll be working within the team responsible for the development and maintenance of our client solutions, with a focus on backend software engineering. Work closely with product, design and backend teams to deliver polished and reliable features.

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 fast-growing AI technology company in Greater London seeks a Software Engineer to develop backend services and APIs.

This hybrid role in London involves designing and maintaining scalable backend Java services.

You will work with backend engineers on AAA and mobile games, constructing systems and delivering high-quality solutions. Ideal candidates will have experience in game development, backend services, and proficiency in programming languages like Java or Golang.

We're looking for an Product Engineer focussed on the Backend to help us scale our systems to unlock Granola for the next 100x users. In this role, you will deep dive into scaling challenges, build secure and reliable infrastructure, and develop robust backend solutions that power exciting new featu

A leading technology firm in the United Kingdom is looking for a Software Engineer to enhance client services and backend/frontend systems.

You’ll be working in a team of backend engineers across MPG to spearhead the delivery and deployment of backend services for industry-leading game projects. Proven experience building backend infrastructure using infrastructure as code tools, e. Demonstrated mastery in at least one relevant area o