1 to 25 of 56 API Design Jobs in the East of England

performance reviews, provide constructive feedback, and support the professional development of the engineers. Facilitate effective communication and collaboration within the team and with other departments. Technical Oversight: Oversee the design, implementation, and maintenance of backend systems and services. Ensure the team adheres to best practices in software development, including code reviews, testing, and continuous integration/deployment. Drive technical … Computer Science, Engineering, or a related field. Experience with cloud platforms (e.g., AWS, Azure, Google Cloud) and containerization technologies (e.g., Docker, Kubernetes). Familiarity with microservices architecture and RESTful API design. Strong understanding of database technologies (SQL and NoSQL). Experience with Agile/Scrum methodologies. Soft Skills: Exceptional communication and interpersonal skills. Ability to inspire and motivate a More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, product owners, designers, technical leads, and other architects to re-architect and design the next-generation Gas and Power trading platform using modern technologies, aligned with business and technology strategies. Deep knowledge of energy trading and risk management processes across front, middle … and back-office functionalities, with an emphasis on physical trading. Responsibilities include: Designing architecture of modern, bespoke energy trading systems, documenting and agreeing on key design decisions and trade-offs with stakeholders. Gathering requirements, analysis, and design across functional, non-functional, technical, and operational areas. Serving as a thought leader and advisor for delivery and design reviews. … in architecture facets such as: Data: Data modeling for transactional and analytic use cases, real-time reporting, data migration, and reconciliation. Familiarity with MongoDB. Technical: Experience in architecture and design patterns, AWS services, programming (C#/Java), microservices (Docker, OpenShift, Kubernetes), web UI (React), Infrastructure as Code (Terraform). Integration: Real-time messaging, API design (JSON, Swagger More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, Product owners. designers, technical leads and other architects to re-architect/design needs of next generation Gas and Power trading platform with modern technologies, consistent with business and technology strategies. Deep knowledge of energy trading and risk management processes across front … middle and back-office functionalities with an emphasis on physical trading. 1) Expert in designing the architecture of modern, bespoke Energy trading systems, including documenting and agreeing key design decisions and trade-offs across diverse stakeholders. 2) Perform requirement gathering, analysis and design across functional, non-functional technical, and operational domains. 3) Thought leader in respective domain, will … be the key advisor to delivery and design reviews. 4) Handling business changes and managing stakeholder expectations 5) Manage communication across multiple teams, vendors, and consulting staff 6) Knowledge of deal lifecycle Qualifications Key Skills 1) Strong functional understanding of physical trading preferably Gas and/or Power, ideally including complex contract optionality and portfolio and schedule optimization, Knowledge More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, Product owners. designers, technical leads and other architects to re-architect/design needs of next generation Gas and Power trading platform with modern technologies, consistent with business and technology strategies. Deep knowledge of energy trading and risk management processes across front … middle and back-office functionalities with an emphasis on physical trading. 1) Expert in designing the architecture of modern, bespoke Energy trading systems, including documenting and agreeing key design decisions and trade-offs across diverse stakeholders. 2) Perform requirement gathering, analysis and design across functional, non-functional technical, and operational domains. 3) Thought leader in respective domain, will … be the key advisor to delivery and design reviews. 4) Handling business changes and managing stakeholder expectations 5) Manage communication across multiple teams, vendors, and consulting staff 6) Knowledge of deal lifecycle Qualifications Key Skills 1) Strong functional understanding of physical trading preferably Gas and/or Power, ideally including complex contract optionality and portfolio and schedule optimization, Knowledge More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, Product owners. designers, technical leads and other architects to re-architect/design needs of next generation Gas and Power trading platform with modern technologies, consistent with business and technology strategies. Deep knowledge of energy trading and risk management processes across front … middle and back-office functionalities with an emphasis on physical trading. 1) Expert in designing the architecture of modern, bespoke Energy trading systems, including documenting and agreeing key design decisions and trade-offs across diverse stakeholders. 2) Perform requirement gathering, analysis and design across functional, non-functional technical, and operational domains. 3) Thought leader in respective domain, will … be the key advisor to delivery and design reviews. 4) Handling business changes and managing stakeholder expectations 5) Manage communication across multiple teams, vendors, and consulting staff 6) Knowledge of deal lifecycle Qualifications Key Skills 1) Strong functional understanding of physical trading preferably Gas and/or Power, ideally including complex contract optionality and portfolio and schedule optimization, Knowledge More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, Product owners. designers, technical leads and other architects to re-architect/design needs of next generation Gas and Power trading platform with modern technologies, consistent with business and technology strategies. Deep knowledge of energy trading and risk management processes across front … middle and back-office functionalities with an emphasis on physical trading. 1) Expert in designing the architecture of modern, bespoke Energy trading systems, including documenting and agreeing key design decisions and trade-offs across diverse stakeholders. 2) Perform requirement gathering, analysis and design across functional, non-functional technical, and operational domains. 3) Thought leader in respective domain, will … be the key advisor to delivery and design reviews. 4) Handling business changes and managing stakeholder expectations 5) Manage communication across multiple teams, vendors, and consulting staff 6) Knowledge of deal lifecycle Qualifications Key Skills 1) Strong functional understanding of physical trading preferably Gas and/or Power, ideally including complex contract optionality and portfolio and schedule optimization, Knowledge More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, Product owners. designers, technical leads and other architects to re-architect/design needs of next generation Gas and Power trading platform with modern technologies, consistent with business and technology strategies. Deep knowledge of energy trading and risk management processes across front … middle and back-office functionalities with an emphasis on physical trading. 1) Expert in designing the architecture of modern, bespoke Energy trading systems, including documenting and agreeing key design decisions and trade-offs across diverse stakeholders. 2) Perform requirement gathering, analysis and design across functional, non-functional technical, and operational domains. 3) Thought leader in respective domain, will … be the key advisor to delivery and design reviews. 4) Handling business changes and managing stakeholder expectations 5) Manage communication across multiple teams, vendors, and consulting staff 6) Knowledge of deal lifecycle Qualifications Key Skills 1) Strong functional understanding of physical trading preferably Gas and/or Power, ideally including complex contract optionality and portfolio and schedule optimization, Knowledge More ❯

December 2025 (Possibility of extension) Industry: Power and Gas Role Overview: Work directly with subject matter experts, Product owners. designers, technical leads and other architects to re-architect/design needs of next generation Gas and Power trading platform with modern technologies, consistent with business and technology strategies. Deep knowledge of energy trading and risk management processes across front … back-office functionalities with an emphasis on physical trading. What you will do: Expert in designing the architecture of modern, bespoke Energy trading systems, including documenting and agreeing key design decisions and trade-offs across diverse stakeholders. Perform requirement gathering, analysis and design across functional, non-functional technical, and operational domains. Thought leader in respective domain, will be … the key advisor to delivery and design reviews. Handling business changes and managing stakeholder expectations Manage communication across multiple teams, vendors, and consulting staff Knowledge of deal lifecycle What you will have: Strong functional understanding of physical trading preferably Gas and/or Power, ideally including complex contract optionality and portfolio and schedule optimization, Knowledge of Options modelling and More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, Product owners. designers, technical leads and other architects to re-architect/design needs of next generation Gas and Power trading platform with modern technologies, consistent with business and technology strategies. Deep knowledge of energy trading and risk management processes across front … middle and back-office functionalities with an emphasis on physical trading. 1) Expert in designing the architecture of modern, bespoke Energy trading systems, including documenting and agreeing key design decisions and trade-offs across diverse stakeholders. 2) Perform requirement gathering, analysis and design across functional, non-functional technical, and operational domains. 3) Thought leader in respective domain, will … be the key advisor to delivery and design reviews. 4) Handling business changes and managing stakeholder expectations 5) Manage communication across multiple teams, vendors, and consulting staff 6) Knowledge of deal lifecycle Qualifications Key Skills 1) Strong functional understanding of physical trading preferably Gas and/or Power, ideally including complex contract optionality and portfolio and schedule optimization, Knowledge More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, Product owners. designers, technical leads and other architects to re-architect/design needs of next generation Gas and Power trading platform with modern technologies, consistent with business and technology strategies. Deep knowledge of energy trading and risk management processes across front … middle and back-office functionalities with an emphasis on physical trading. 1) Expert in designing the architecture of modern, bespoke Energy trading systems, including documenting and agreeing key design decisions and trade-offs across diverse stakeholders. 2) Perform requirement gathering, analysis and design across functional, non-functional technical, and operational domains. 3) Thought leader in respective domain, will … be the key advisor to delivery and design reviews. 4) Handling business changes and managing stakeholder expectations 5) Manage communication across multiple teams, vendors, and consulting staff 6) Knowledge of deal lifecycle Qualifications Key Skills 1) Strong functional understanding of physical trading preferably Gas and/or Power, ideally including complex contract optionality and portfolio and schedule optimization, Knowledge More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, product owners, designers, technical leads, and other architects to re-architect and design the needs of the next-generation Gas and Power trading platform using modern technologies, aligned with business and technology strategies. Deep knowledge of energy trading and risk management processes … across front, middle, and back-office functionalities, with an emphasis on physical trading. Responsibilities include: Designing architecture of modern, bespoke energy trading systems and documenting key design decisions and trade-offs. Gathering requirements, analysis, and design across functional, non-functional, technical, and operational domains. Serving as a thought leader and key advisor for delivery and design reviews. … portfolio optimization. Knowledge of options modeling and dependency graphs. Experience across architecture facets including: Data: Data modeling, real-time reporting, data migration, reconciliation, familiarity with MongoDB. Technical: Architecture and design patterns, AWS, coding (C#/Java), microservices (Docker, Kubernetes), web UI (React), Infrastructure as Code (Terraform). Integration: Real-time messaging, API design, batch techniques. Infrastructure and More ❯

/2025 IR35: Inside Job Overview: We are seeking a highly experienced Application/Integration Architect with strong expertise in MuleSoft, Apache Camel, and RabbitMQ to lead the design, development, and deployment of enterprise-grade integration solutions. The ideal candidate will have a solid grasp of event-driven architecture, enterprise integration patterns, and secure, scalable message-driven solutions, coupled … with hands-on experience in DevOps and CI/CD. Key Responsibilities: Architecture & Design * Architect scalable, secure, and high-performance integration solutions using MuleSoft, Camel, and RabbitMQ. * Define reusable patterns and integration frameworks based on EIP (Enterprise Integration Patterns). * Lead API and messaging solution designs adhering to RESTful/SOAP standards and AMQP best practices. * Design and implement event-driven architectures, pub-sub models, and asynchronous message flows. Development & Implementation. * Build and maintain Mule flows, subflows, and message processors using Anypoint Studio and Platform. * Design complex DataWeave transformations and data enrichment pipelines. * Configure and manage RabbitMQ clusters, exchanges, queues, bindings, and vhosts. * Develop Apache Camel routes and leverage EIPs like WireTap, Enricher, Splitter/ More ❯

possibility of extension Working hours: 40 hrs/week Role Overview Work directly with subject matter experts, product owners, designers, technical leads, and other architects to re-architect and design the next generation Gas and Power trading platform using modern technologies, aligned with business and technology strategies. Deep knowledge of energy trading and risk management processes across front, middle … and back-office functionalities, with an emphasis on physical trading. Responsibilities include: Designing the architecture of modern, bespoke energy trading systems, documenting and agreeing on key design decisions and trade-offs with stakeholders. Gathering requirements, analysis, and design across functional, non-functional, technical, and operational domains. Serving as a thought leader and key advisor in design reviews … contract optionality, portfolio and schedule optimization, options modeling, and dependency graphs. Experience across various architecture facets: Data: Data modeling, real-time reporting, data migration, MongoDB familiarity. Technical: Architecture and design patterns, AWS, C#/Java, Docker, Kubernetes, React, Terraform. Integration: Real-time messaging, API design, batch techniques. Infrastructure and Operational: DevOps, CI/CD, automated deployments, cloud More ❯

databases and distributed queue systems Guide development of our Nuxt (Vue 3) frontend with TypeScript and modern CSS frameworks Manage our React Native mobile app development and cross-platform API integration Ensure seamless integration between frontend, backend, and AI orchestration layers Lead our serverless and containerised deployment strategies across cloud providers Architect scalable compute solutions for both web applications … and AI workloads Manage multi-database architecture across relational and document stores Design fault-tolerant systems with automatic scaling and recovery capabilities Oversee CI/CD pipelines and comprehensive monitoring across all services Technical Leadership: Build and lead a team across full-stack development and AI engineering Establish best practices for cloud-native, multi-technology development environments Drive architectural … managed services (Bedrock, OpenAI) and self-hosted solutions Understanding of vector databases, embedding systems, and retrieval architectures Technical Expertise: Containerisation (Docker) and orchestration platforms (Kubernetes, ECS, or equivalent) Database design across SQL and NoSQL systems API design, microservices architecture, and distributed systems Cloud infrastructure management and infrastructure-as-code AI/ML model deployment, monitoring, and scaling More ❯

databases and distributed queue systems Guide development of our Nuxt (Vue 3) frontend with TypeScript and modern CSS frameworks Manage our React Native mobile app development and cross-platform API integration Ensure seamless integration between frontend, backend, and AI orchestration layers Lead our serverless and containerised deployment strategies across cloud providers Architect scalable compute solutions for both web applications … and AI workloads Manage multi-database architecture across relational and document stores Design fault-tolerant systems with automatic scaling and recovery capabilities Oversee CI/CD pipelines and comprehensive monitoring across all services Technical Leadership: Build and lead a team across full-stack development and AI engineering Establish best practices for cloud-native, multi-technology development environments Drive architectural … managed services (Bedrock, OpenAI) and self-hosted solutions Understanding of vector databases, embedding systems, and retrieval architectures Technical Expertise: Containerisation (Docker) and orchestration platforms (Kubernetes, ECS, or equivalent) Database design across SQL and NoSQL systems API design, microservices architecture, and distributed systems Cloud infrastructure management and infrastructure-as-code AI/ML model deployment, monitoring, and scaling More ❯

databases and distributed queue systems Guide development of our Nuxt (Vue 3) frontend with TypeScript and modern CSS frameworks Manage our React Native mobile app development and cross-platform API integration Ensure seamless integration between frontend, backend, and AI orchestration layers Lead our serverless and containerised deployment strategies across cloud providers Architect scalable compute solutions for both web applications … and AI workloads Manage multi-database architecture across relational and document stores Design fault-tolerant systems with automatic scaling and recovery capabilities Oversee CI/CD pipelines and comprehensive monitoring across all services Technical Leadership: Build and lead a team across full-stack development and AI engineering Establish best practices for cloud-native, multi-technology development environments Drive architectural … managed services (Bedrock, OpenAI) and self-hosted solutions Understanding of vector databases, embedding systems, and retrieval architectures Technical Expertise: Containerisation (Docker) and orchestration platforms (Kubernetes, ECS, or equivalent) Database design across SQL and NoSQL systems API design, microservices architecture, and distributed systems Cloud infrastructure management and infrastructure-as-code AI/ML model deployment, monitoring, and scaling More ❯

databases and distributed queue systems Guide development of our Nuxt (Vue 3) frontend with TypeScript and modern CSS frameworks Manage our React Native mobile app development and cross-platform API integration Ensure seamless integration between frontend, backend, and AI orchestration layers Lead our serverless and containerised deployment strategies across cloud providers Architect scalable compute solutions for both web applications … and AI workloads Manage multi-database architecture across relational and document stores Design fault-tolerant systems with automatic scaling and recovery capabilities Oversee CI/CD pipelines and comprehensive monitoring across all services Technical Leadership: Build and lead a team across full-stack development and AI engineering Establish best practices for cloud-native, multi-technology development environments Drive architectural … managed services (Bedrock, OpenAI) and self-hosted solutions Understanding of vector databases, embedding systems, and retrieval architectures Technical Expertise: Containerisation (Docker) and orchestration platforms (Kubernetes, ECS, or equivalent) Database design across SQL and NoSQL systems API design, microservices architecture, and distributed systems Cloud infrastructure management and infrastructure-as-code AI/ML model deployment, monitoring, and scaling More ❯

Join Rainbird as a Software Engineer and become the critical link between cutting-edge AI technology and real-world business impact. You'll design and deliver seamless integrations between our award-winning low-code SaaS platform and diverse client ecosystems, rapidly transforming complex challenges into tangible AI-driven solutions. If you thrive in dynamic environments and want to shape … hybrid Neuro-Symbolic AI model. You will be part of a fast-moving agile team that ships production code regularly and values engineering excellence and continuous learning. You will: Design, develop, and maintain scalable features for the Rainbird platform Work across our frontend (React) and backend (Node.js, Go) codebases while exercising autonomy in technical decision-making and task prioritisation … Contribute to DevOps practices, improving CI/CD pipelines and IaC deployment processes Collaborate with product and design functions to deliver intuitive user experiences Participate in code reviews and architecture discussions to uphold engineering best practices Help troubleshoot platform issues and assist in resolving infrastructure incidents Continuously seek ways to improve system performance, stability, and security Support internal innovation More ❯

to develop their skills on real-world projects alongside experienced engineers, designers, and product managers. Whether it’s developing new user-facing features, improving system performance, or contributing to API design, you’ll have the chance to make meaningful contributions from day one while learning best practices in software engineering. What You’ll Be Doing: Designing, developing, testing … Writing clean, maintainable code across both front-end and back-end systems Participating in code reviews, stand-ups, and sprint planning Collaborating with cross-functional teams including product and design Learning and applying best practices in version control, testing, and CI/CD Debugging and resolving issues, and contributing to continuous improvement Staying up to date with emerging tools More ❯

to develop their skills on real-world projects alongside experienced engineers, designers, and product managers. Whether it’s developing new user-facing features, improving system performance, or contributing to API design, you’ll have the chance to make meaningful contributions from day one while learning best practices in software engineering. What You’ll Be Doing: Designing, developing, testing … Writing clean, maintainable code across both front-end and back-end systems Participating in code reviews, stand-ups, and sprint planning Collaborating with cross-functional teams including product and design Learning and applying best practices in version control, testing, and CI/CD Debugging and resolving issues, and contributing to continuous improvement Staying up to date with emerging tools More ❯

modern languages. 10+ years of experience in software development and architecture. Nice to Haves Experience in building multi-tenant cloud products Experience in the business domain and data modeling, API design Experience with AWS, Azure, or GCP. Experience with Kubernetes. Benefits (UK) Pension scheme via Aviva, matched up to 9% of salary Mental health and wellbeing support via More ❯

FinTech companies. Requirements: At least 5 years of professional Rust software development experience Strong understanding of Rust, memory management, STL containers, and algorithms Good knowledge of OOAD, architecture and design patterns, API design principles Hands-on experience with low-latency, multithreading, including race conditions, deadlocks, etc. Experience with PostgreSQL, particularly in handling large-scale datasets and optimizing … tools such as CMake/Make Experience with containers (Docker, Kubernetes) Responsibilities: Write clear, understandable and highly optimized Rust code according to best practices Develop new features including the design of interfaces and implementation to support reusability, testability, modularity in accordance with the agreed plans and quality standards Enhance existing features and improve the quality of the libraries and … meets client expectations Provide time estimates and time/performance/quality trade-offs to management and other teams Participate in technical discussions to find the right architecture/design solution Contribute to architectural planning and refactoring Defect analysis and fixing Report the status, results and roadblocks Conduct an interviews Collaborate effectively with engineers and other team members, transfer More ❯

senior PHP & cloud engineers Competitive salary and complete benefits package What you will do Build and refactor PHP 8/MySQL tooling for 100 GB-scale market-data systems Design secure REST/micro-service APIs in Laravel, Symfony or similar Containerise services in Docker and contribute to CI/CD pipelines Deploy features on-site in London, New … PHP in a University project Proven projects with PHP + MySQL ; comfortable with large data sets Working knowledge of another back-end language (Node, Python, etc.) Understanding of OOP, API design, testing and web-app security Self-starter mindset and a genuine desire to travel Find out more For a confidential chat, contact Con Lam at Harrington Starr More ❯

Solutions Architect (Integration | API Design)St Albans (Hybrid) Compensation: Salary +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They're seeking a Solutions Architect to lead the end-to-end technical design of mission-critical platforms and services. The Role: We … re seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate systems, and overseeing their seamless migration to a new, unified platform - ensuring zero downtime throughout. In addition, you'll lead the … Review implementations to ensure compliance with technical standards Drive innovation through prototyping and evaluation of emerging technologies What We're Looking For: Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP More ❯

Solutions Architect (Integration | API Design) St Albans (Hybrid) Compensation: Salary +Bonus +Equity Method Resourcing are proud to be partnering with a fast-growing, international technology business delivering critical services across multiple high-reliability sectors. They're seeking a Solutions Architect to lead the end-to-end technical design of mission-critical platforms and services. The Role: We … re seeking an experienced Solution Architect to design scalable, secure, and efficient technology solutions that support a major systems consolidation and migration programme. You will be responsible for planning and documenting the decommissioning of up to 30 disparate systems, and overseeing their seamless migration to a new, unified platform - ensuring zero downtime throughout. In addition, you'll lead the … Review implementations to ensure compliance with technical standards Drive innovation through prototyping and evaluation of emerging technologies What We're Looking For: Proven experience in Solution Architecture or Solution Design, ideally in environments involving systems consolidation or major technology transformations Proficiency in cloud platforms, API development, message buses, DevOps practices, and languages such as C#, Python, or PHP More ❯