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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

NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect,.After 15 years' experience in the fashion industry, our client has a mission to change the way people find clothes they love by combining technology w

Overview Lead the Analysis, Portfolio and Investment (API) Practice within the Asset and Network Planning directorate for the M25 Strategic Road Network, translating asset condition, performance, risk, cost intelligence and whole‑life carbon impacts into contract‑compliant investment strategies,

A leading UK supermarket is seeking a skilled software engineer to join the Price Service team, working on a critical HTTP API.The role involves designing and implementing scalable systems using Java 8+, with an emphasis on cloud platforms and Agile methodologies.The ideal candidate will possess str

Join the team behind Price Service-a mission-critical HTTP API powering pricing and promotions across all of Tesco's channels. We're building a robust, internet-facing API that runs both in stores and in the cloud, designed to support future innovation at scale.

A leading grocery retailer in the UK is seeking a talented Product Manager to enhance product lifecycle services. Candidates should have strong knowledge of product management practices and the ability to influence technical solutions.

A leading retail company in the UK seeks a skilled Java Developer to build end-to-end systems for a mission-critical API supporting pricing and promotions.The ideal candidate has strong experience with Java 8+, cloud platforms, and SQL/NoSQL databases.They will engage in test-driven development and

Join the team behind Price Service—a mission‑critical HTTP API powering pricing and promotions across all of Tesco’s channels. We’re building a robust, internet‑facing API that runs both in stores and in the cloud, designed to support future innovation at scale.

A leading retail technology firm in the UK is looking for an individual to join their Analytics Capabilities team.This role will involve developing and implementing analytics tracking and handling web APIs, requiring a comprehensive understanding of web technologies.The ideal candidate will have a s

Join the team behind Price Service—a mission‑critical HTTP API powering pricing and promotions across all of Tesco’s channels. We’re building a robust, internet‑facing API that runs both in stores and in the cloud, designed to support future innovation at scale.

Join the team behind Price Service-a mission-critical HTTP API powering pricing and promotions across all of Tesco's channels. We're building a robust, internet-facing API that runs both in stores and in the cloud, designed to support future innovation at scale.

You will design and implement robust systems for their internet-facing API, collaborating closely with product stakeholders.

Join the team behind Price Service—a mission‑critical HTTP API powering pricing and promotions across all of Tesco’s channels. We’re building a robust, internet‑facing API that runs both in stores and in the cloud, designed to support future innovation at scale.

We are looking for a Machine Learning Ops Engineer to help operationalise machine learning across Affinity Water on a 24 month FTC. Youll work with data scientists, engineers, architects, and stakeholders to deploy, monitor, and maintain ML models in robust, scalable, and secure production environments, turning advanced analytics into sustained business value. What Youll Do Build, maintain, and optimise automated ML deployment pipelines with CI/CD, containerisation, and orchestration. Monitor model performance, data drift, and system health to ensure reliability and availability. Support ML platforms and infrastructure on-premise or in the cloud (AWS, SageMaker), ensuring scalability and security. Collaborate with data scientists to productionise models and embed ML Ops best practices across the organisation. Ensure governance, compliance, documentation, and reproducibility of ML pipelines and models. Provide 2nd/3rd line support, manage release cycles, and resolve incidents efficiently. Continuously improve ML Ops processes, tooling, and automation for efficiency and reliability. What Were Looking For Essential: 5+ years experience in MLOps, DevOps, or related roles. Strong knowledge of ML lifecycle management, deployment, monitoring, and model maintenance. Hands-on experience with Python (and ML frameworks), containerisation (Docker/Kubernetes), CI/CD pipelines, and cloud ML services (AWS SageMaker preferred). Experience with infrastructure-as-code, production-grade Linux environments, and API services (Flask/Gunicorn). Proficiency in building automated, reliable ML pipelines with structured and unstructured data. Excellent problem-solving, analytical, and communication skills; self-motivated and organised. Ability to embed best practices for governance, reproducibility, and operational excellence. Desirable: Experience with feature stores, model registries, real-time serving, and model retraining automation. Integration of ML systems into business applications or APIs. Exposure to Water Industry data, systems, and processes. Benefits: Salary: From £60,000 dependant on skills and experience Able to work from the Hatfield office at least 2 days per week, with flexibility to spend additional days on-site as required by the programme Learning and development opportunities, including mentoring and a range of formal courses and open learning resources. Entry into the company annual bonus scheme Annual leave from 26-30 rising with length of service, and the option to purchase up to 5 extra days. A Celebration Day in addition to public holidays that people can use to celebrate a religious festival or other occasion that is important to them. A generous 'double match pension scheme' that doubles the contributions you make (company contribution capped at 12%) We offer a range of family benefits including enhanced Maternity, Adoption, Paternity, Shared Parental Leave, Fertility Support Leave and up to 5 full or 10 half days of paid Carers Leave. Menopause policy and Reasonable Adjustment policy to help everyone perform at their best. Access to our Wellbeing Centre with support for looking after your physical and mental health. Discounts at a Range of Retail Outlets and on Dental and Medical Insurance through our Tap4Perks scheme. Up to 4 Affinity days a year to volunteer in the community. Life Assurance. Disability Confident As a Disability Confident employer, were committed to offering interviews to disabled candidates who meet the essential criteria and opt in on the application form. Ask the Talent Acquisition lead for the full job description to see all the criteria. If we have a very high volume of applicants and were not able to offer interviews to all, well take a fair and proportionate number of disabled candidates through. Affinity Water recognises the benefits of greater diversity in our workforce to better reflect the communities we serve. We are committed to building a more inclusive culture where every member of our workforce can thrive. TPBN1_UKTJ

You will take complete ownership of the API and EDI areas across the business. Experience owning or leading API or EDI integration work. API & EDI Integrations Specialist.

The organisation is looking for a Technical Product Owner specifically within the financial services industry to own the roadmap of the critical replatforming of our organisations payment system - for this you will have to have deep knowledge of the financial services / banking be a highly experienc

API & EDI Integrations Specialist. Hays is supporting a long-standing client as they continue their digital growth journey, and we are looking to appoint an API and EDI Integration Specialist who can take full ownership of their integration landscape. If you enjoy shaping how integrations work,

We’re looking for an API Product Sales Executive to drive adoption of our payments-as-a-service offering with enterprise customers.

Company Details:Join a fast-growing, award-winning software company that delivers end-to-end cloud solutions for practices and businesses.Youll work with innovative tools, a collaborative culture and meaningful career progressionRole Overview:My client is a fast-growing, award-winning software compa

We’re looking for an API Product Sales Executive to drive adoption of our payments-as-a-service offering with enterprise customers.

API Capacitors Limited are the UKs leading designer and manufacturer of high-quality capacitors for power electronic applications.

PPI Engineering Ltd has the experience and capability to deliver innovative, reliable, high efficiency solutions to every customer.With an established track record in the design and supply of both medium and high voltage motors, generators and associated equipment, PPI also offer a full service and

Workday Integration Consultant (API & Integration Architecture)London (Hybrid)Contract Inside IR35 Were supporting a leading organisation in the engineering and infrastructure sector looking for a Workday Integration Consultant to provide expert guidance on integration strategy across HR and IT.

PPI has the experience and capability to deliver innovative, reliable, high efficiency solutions to every customer.With an established track record in the design and supply of both medium and high voltage motors, generators and associated equipment, PPI also offer a full service and support package

In addition, you’ll build a strong understanding of our API ecosystem and contribute to the design and delivery of API‑enabled data services that support customer‑facing and internal platforms. As a Data API Engineer, you’ll be looking to simplify our organisation by developing innovative da

A leading financial technology company is seeking a Product Director to lead product strategy and development, focusing on embedding payments in services.The ideal candidate will have a strong background in product management, technical development, and leading high-performing teams.This role offers

The role involves deploying APIs using Python and Typescript, with a strong focus on cloud architecture and a devops culture.

A growing fintech company is hiring a remote Backend Engineer (PHP) to enhance their investment platform's API. Responsibilities include designing and building APIs for financial transactions, enhancing system reliability, and contributing to architectural decisions.

A global API management company is seeking a QA Engineer to enhance the software development process through manual testing and automation. Join this innovative team in Greater London and contribute to high-quality API management solutions.

A leading technology solutions provider is seeking an Integration Consultant.In this role, you will support data migration and integration, lead customer workshops, and collaborate with various teams to ensure successful implementations.The ideal candidate will have a foundational understanding of d

Key responsibilities include developing and validating methods for radio‑labelled APIs, troubleshooting instrumentation, and ensuring quality results.

A leading API platform provider in London is seeking a Technical Support Engineer to become an expert on their platform and resolve customer issues.

A global background screening company is looking for a versatile Technical Product Manager to lead their integration strategy.This role combines product management with business analysis, requiring strong technical literacy and the ability to manage third-party partnerships effectively.The ideal can

Candidates should have 8+ years of experience in cloud-scale applications, with a strong background in leading teams and building API strategies.

A leading IT services provider is looking for a Senior Software Engineer specializing in Ruby on Rails.The ideal candidate will have over 5 years of professional software engineering experience and 3 years specifically with Ruby on Rails.This position includes technical leadership, developing new fe

I'm currently supporting a leading Bank in their search for an experienced Java API Engineer to join their flagship Digital Platform.

A fast-growing finance company in Greater London is looking for an Entry Level Back End Acquisition Tech Developer.The role focuses on driving customer growth through data engineering and tooling, requiring strong proficiency in Python and SQL.The ideal candidate should thrive in an unstructured and

The ideal candidate will have over 7 years of strong backend experience in Golang, solid skills in system design, API and data modeling, and familiarity with modern cloud architectures.

Net C#, RESTful APIs, and be familiar with modern front-end frameworks like React and Next.

You will build automated tests using modern frameworks and create robust API testing coverage, while leveraging AI tools to enhance workflows.

The ideal candidate will have extensive experience in solution architecture across digital environments, particularly with microservices, API design, and cloud technologies.

NET, SQL, API integration, Kubernetes, Docker. Leading the design, development, maintenance and integration of their APIs with 3rd party vendors.

Design, deploy, and manage applications tailored to business needs, while customizing platforms and overseeing the full API lifecycle using Apigee Edge and X. Good knowledge of the Apigee platform or any APIM platform and its components. Implementation of API security and access control (OAuth, API

A leading technology consultancy is looking for a Software Test Engineer for a 12-month contract based in Newcastle Upon Tyne.This role offers £70 per hour and involves collaborating with developers and stakeholders to ensure software quality.Candidates should have experience in testing REST Archit

You will own the API roadmap, work closely with engineering and design teams, and ensure the development of high-quality, scalable APIs. Ideal candidates will possess over 3 years of product management experience and have a solid background in API-first products. A leading financial technology compa

A leading tech service provider in Greater London is looking for a Technical Support Engineer who will act as the technical anchor for support operations.This role requires proficiency in troubleshooting complex connectivity issues and assisting Tier 1 support teams.The ideal candidate will possess

Responsibilities include designing scalable applications with Docker and KONG technologies, migrating existing systems, and implementing RESTful APIs. The ideal candidate will have expertise in API testing tools such as Swagger Hub and Postman, as well as a solid understanding of security protocols.

This role involves defining integration architecture, managing API designs, and ensuring quality across integration components.