1 to 25 of 106 API Design Jobs in London

up—within a startup-style venture backed by the strength and stability of an established business. Key Responsibilities End-to-end development of high-quality, scalable SaaS platforms from design through deployment and maintenance. Architect and implement robust backend services primarily using Python and PostgreSQL. Develop and maintain responsive, performant front-end applications with TypeScript and modern frameworks (e.g. … development productivity and platform capabilities. Provide technical mentorship and leadership to development teams, fostering best practices in coding, testing, and deployment. Participate in code reviews, architecture discussions, and system design decisions. Troubleshoot and resolve complex technical issues across the full stack. Ensure software security, scalability, and performance are maintained at all times. Keep abreast of emerging technologies and industry … Proven expertise in full-stack development using: TypeScript (and JavaScript frameworks such as NextJS, Node, or Tailwind) Python (including frameworks like Django, Flask, or FastAPI) PostgreSQL and relational database design, optimization, and maintenance. AI Development Tools such as Windsurf, Aider or Augment. Demonstrable experience building and scaling SaaS platforms in a production environment. Strong understanding and practical application of More ❯

ready to grow with us Location: Soho, London (onsite 4 days a week) Salary: Based on experience Must hold right to work in the UK. Main responsibilities Development and Design: Write clean, efficient, and maintainable code using TypeScript, JavaScript, Node.js, and React. Design and implement robust applications and services to meet predefined requirements. Code Review and Quality Assurance … Experience with modern development tools and practices, such as Git, CI/CD pipelines, automated testing frameworks (e.g., Jest, Mocha), and containerisation technologies (e.g., Docker). Knowledge of RESTful API design and development, and familiarity with web services architecture. Ability to write efficient, secure, well-documented, and clean JavaScript code. Familiarity with database technologies, both SQL (e.g., PostgreSQL More ❯

AI Agents Solution Architect - Future Talent (Q2/Q3 opportunities) for leading GSI in the software engineering market AI Solution Architect to design and implement AI-driven agent solutions for the online commerce space. Deep understanding of AI/ML models, cloud computing, and scalable system architecture. This role requires expertise in architecting intelligent agents, optimizing cloud-based deployments … and integrating AI services into enterprise applications. Key Responsibilities: Architect and design AI-powered agent solutions that integrate with enterprise systems and cloud platforms. Develop and optimize RESTful and GraphQL APIs to facilitate AI-driven interactions. Utilize AWS services (Lambda, S3, API Gateway, SageMaker, DynamoDB, ECS, etc.) to deploy scalable AI solutions. Implement Full Stack JavaScript (Node.js, React.js … Work closely with data scientists and ML engineers to integrate machine learning models into cloud-native applications. Ensure security, scalability, and reliability of AI agent solutions in production environments. Design event-driven and serverless architectures to enhance AI agent performance. Lead proof-of-concept (PoC) developments for AI-based automation and intelligent process optimization. Define best practices for AI More ❯

D&A systems and the wider technology architecture. 1. Data & Analytics (D&A) Infrastructure Management: Develop, maintain, and optimize the D&A architecture on AWS and Azure, including the design, deployment, and maintenance of the cloud based Pladis' data platform (PDP). Deliver an architecture that's globally scalable, agile, and supportive of digital services through Data and Insights … as a service via APIs. 2. Data Technology Capability Enhancement: Design and oversee the implementation of the PDP 2.0 Tech stack. Design and oversee data architecture to harmonise external, internal and Microsoft Graph data to deliver AI use cases Champion engineering standards and ensure new engineers' quick integration and productivity. Lead engineering problem solving and provide technical guidance … with latest AI and ML trends to keep the company at the technological forefront. Lay down AI architectural standards, best practices, and guidelines for system design. 5. AI Solutions Design and Integration: Design AI solutions that are robust, scalable, and in line with business requirements. Integrate generalized AI models into business processes and ensure they harmonize with existing More ❯

across teams. Success in this position requires not only technical proficiency but also excellent interpersonal skills to thrive in an environment that values teamwork, knowledge sharing, and mutual support. * Design, code, test, and deliver software enhancements aimed at improving existing systems by adopting DevOps principles across all cloud database offerings.* Troubleshoot complex incidents efficiently, communicate effectively with stakeholders at … is advantageous for scaling operations smoothly.* Knowledge of leveraging APIs securely along with authentication mechanisms and data structures enhances your ability to integrate systems seamlessly.* Understanding microservice architectures, REST API design/development principles, Docker/Kubernetes containerisation technologies, and CI/CD integration is beneficial. Robert Walters Operations Limited is an employment business and employment agency and More ❯

solutions that align with long-term funding strategies. About the Role: We are seeking a highly skilled Tech lead/Engineering Manager who is a hands on developer to design, build, and implement a Trade Execution Platform/Application that integrates seamlessly with their backend database to automate and streamline the trade execution operations processes. The platform will optimize … leveraging Azure hosting and tools like SQL, and Excel. This role is ideal for a candidate with expertise in backend systems integration, database optimization, and workflow automation. Key Responsibilities: • Design and develop a robust trade execution platform to process trades efficiently, integrating with existing backend databases. • Enable secure and efficient data file exchange between users. • Database Integration: • Work with … Handling: Hands-on experience processing and manipulating Excel files programmatically. • Cloud Technologies: Proficiency in Azure services, including Azure Functions, Azure SQL, and Azure DevOps for CI/CD pipelines. • API Development: Familiarity with RESTful API design and integration. • Data Transformation: Experience with data cleansing, validation, and transformation. Preferred Candidate Experience: • Prior experience in developing trade or finance 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 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 Numerate degree Key Skills 1) Strong functional understanding of physical trading preferably Gas and/or Power, ideally including complex contract optionality and portfolio and schedule optimization More ❯

Principal Engineer - Law Firm 3 days pw in London Lead the design, architecture, and development of innovative technical solutions, with a focus on Microsoft Azure, cloud-native technologies, and microservices architecture.Act as an internal SME across complex business and technology projects, providing expert third-line support and driving resolution of critical incidents.Own and evolve our approach to disaster recovery … experience with a broad tech stack including: C#, JavaScript, Python Azure, Terraform, Kubernetes, Docker CI/CD pipelines (Azure DevOps, GitHub Actions, etc.) Front End frameworks (React, Vue, ASP.NET) API design (REST, JSON, XML) Database experience: SQL, NoSQL, vector databases AI integration: OpenAI, Gemini, and other LLMs Strong knowledge of agile, lean, and DevOps best practices.A collaborative, commercial More ❯

have the opportunity to work across a modern engineering environment, collaborate with agile product teams, and contribute to a high-traffic platform used by millions of customers. Key Responsibilities: Design, build, and maintain scalable, high-performance services using Kotlin or Java Provide technical leadership and mentoring to other engineers in the team Contribute to solution architecture and strategic technical … Skills & Experience 5+ years of back-end development experience using Kotlin or modern Java Expertise in microservice architectures and frameworks like Spring Boot or http4k Deep understanding of RESTful API design and integration Proven experience mentoring engineers and contributing to high-performing teams Familiarity with Agile (Scrum or Kanban), TDD, and pair programming practices Experience with CI/ More ❯

Working Hours: 8 per day/40 per 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 … 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 ❯

AWS, Azure, GCP) Proficiency in front end e.g., React, Angular, Vue.js and frameworks such as e.g., Node.js or FastAPI. Experience with databases such as MongoDB and MySQL. Familiarity with API design and development, including serverless technologies, e.g. AWS ECS/API Gateway/Lambda. A passion for space technology and a genuine interest in the space sector More ❯

on our projects with our public sector clients, helping to deliver Solirius services to the highest standard. The role will involve working with multiple business stakeholders, helping them to design business solutions which will then be implemented by the delivery teams. As a Solution Architect, you will be expected to operate with a high degree of autonomy, using your … cross-functional working environments. Your role will require innovative thinking, applying best practices and emerging technologies to solve complex business problems in creative and pragmatic ways. Requirements Key Responsibilities: Design end-to-end solution architectures that meet business, technical, and security requirements. Translate business and technical requirements into scalable, secure, and cost-effective designs. Ensure alignment with enterprise architecture … technology strategy, and governance standards. Lead architecture reviews and technical design workshops with stakeholders and delivery teams. Support Agile delivery teams, defining MVP architecture and providing ongoing technical direction. Collaborate with stakeholders across business, product, and IT to gain buy-in and drive decisions. Define integration patterns, APIs, and data flows between systems and services. Contribute to DevOps, automation More ❯

focusing on iterative value delivery, fast feedback loops, and continuous improvement. Contribute to backlog grooming, technical scoping, and story writing with product managers. Participate in code reviews, retrospectives, and design sessions, contributing to a strong engineering culture. Security, Quality, and Operations Ensure that all solutions meet firmwide standards for security, privacy, and compliance. Take ownership of the health of … Proficiency in modern programming languages and frameworks (e.g. JavaScript/TypeScript, Python, .NET, Node.js). Experience with frontend development (e.g. React, Angular, Hugo). Strong understanding of backend systems, API design, and system integration. Comfortable working with cloud platforms such as Microsoft Azure or AWS. Familiarity with databases (SQL/NoSQL), identity/access management, and deployment tools. … cross-functional team. Experience working in a professional service, legal, or regulated environment is a plus, but not required. Experience collaborating with product teams and participating in user-focused design and delivery. Ways of Working Practical understanding of agile, DevOps, and CI/CD practices. Passion for writing maintainable, testable code and improving developer workflows. Ability to balance speed More ❯

experience in some of these, but if not we’ll help you with them AWS Certification at Associate level eg Solution Architect, Developer or DevOps Expertise in microservices and API design Docker, and container runtime platforms such as Kubernetes, EKS, ECS etc Strong understand of operational concepts on AWS, particularly monitoring and observability, FinOps Utilising CI/CD More ❯

Role : Mulesoft Architect Location : London Work Mode : Hybrid Contract Role Job Description: We are looking for a seasoned Solution Architect with strong hands-on experience in MuleSoft and API design/development . The ideal candidate will play a pivotal role in designing scalable and secure integration solutions across enterprise systems. Experience with MongoDB and other NoSQL databases … is highly desirable. Key Responsibilities: Lead the architecture, design, and implementation of integration solutions using MuleSoft Anypoint Platform. Collaborate with business and technical stakeholders to define API-led connectivity strategies. Design and document integration patterns, data flows, and API specifications (RAML/OAS). Provide hands-on development support for complex MuleSoft flows, DataWeave transformations, and … API policies. Oversee the full API lifecycle - from design to deployment and monitoring. Integrate MuleSoft with MongoDB and other back-end systems where applicable. Define best practices for security, performance, and scalability of integration solutions. Mentor development teams and provide technical leadership across projects. Required Skills & Experience: 8+ years of experience in integration architecture with at least More ❯

Our client is a leading AI company who are looking for a Product Solution Architect who has worked in top AI/Big Tech or FAANG companies, who can design solution architecture for their customer products. Required Skills & Qualifications: Architecture & Design: Expertise in microservices, micro frontends, event-driven systems, and API-first design. Cloud Platforms: Strong experience … with AWS, Azure, and GCP; cloud-agnostic architecture focus. Scalability: Proven ability to design scalable, distributed, high-availability systems. DevOps & Automation: Hands-on with Kubernetes, Docker, Terraform, Ansible, and CI/CD pipelines. Security & Compliance: Solid grasp of cloud security, management, and compliance standards (GDPR, SOC2, ISO 27001). Programming & Frameworks: Skilled in React, Python, Go, or Node.js, with … Computer Science, Engineering, or related field. 6+ years in software architecture and design. Track record as a Solution Architect for SaaS or cloud-agnostic platforms. Experience with distributed systems, API design, and multi-tenant architecture. Familiar with data architecture, AI/ML integration, and observability tools. Certifications (): AWS Solutions Architect, Google Cloud Architect, Azure Solutions Architect Expert. If More ❯

Bloomsbury Square, London, United Kingdom Job Summary: We are seeking a Senior MuleSoft Developer to lead API design, development, and integration using the MuleSoft Anypoint Platform. The ideal candidate will be responsible for architecting scalable and high-performance integration solutions, mentoring junior developers, and ensuring best practices across the integration lifecycle. Key Responsibilities: Design, build, and maintain … SAP, Salesforce, databases, etc. Required Skills and Qualifications: 5+ years of experience in integration development 3+ years of hands-on development with MuleSoft (preferably Mule 4) Strong knowledge of API-led connectivity and enterprise integration patterns (EIP) Experience with DataWeave , MUnit (testing), and API Gateway Proficiency in designing RAML specifications Experience integrating with REST, SOAP, JDBC, JMS, FTP More ❯

like RDS/Aurora/Neptune plus CockroachDB.This is a contract position for 7 months working inside IR35.Lead Site Reliability Engineers (SRE) play an important role in the operations, design and development of our client’s modern public cloud offering. You'll be required to apply your depth of knowledge and expertise to all aspects of the product development … focused on common goals. The team embrace a culture of experimentation and constantly strive for improvement and learning. You’ll work in a collaborative, trusting, thought-provoking environment. Responsibilities Design, code, test and deliver software to improve our existing systems by adopting DevOps culture. Troubleshoot and manage incidents, communicate with stakeholders at all levels, facilitate blameless post-mortems, identify … s of nodes under management) Experience in the use of declarative frameworks (Puppet or Terraform) Expertise in leveraging APIs, and security, authentication and data structures Expertise in software design using Domain Driven Design, SOLID or GRASP Exposure to Micro service architecture, REST API design/development Exposure to Docker/Kubernetes Knowledge of source code CI More ❯

will Develop and maintain Django-based backend services that power our automation platform Build robust web scraping and automation workflows using Selenium to interact with various real estate CRMs Design and implement integrations between our platform and client systems Optimize LLM interactions and prompts to improve response quality and accuracy Collaborate with the team to architect scalable solutions as … on experience with Django framework 3+ years of experience with web scraping/automation using Selenium or Puppeteer Strong understanding of web technologies (HTML, CSS, JavaScript) Experience with RESTful API design and implementation Solid understanding of database design and optimization Excellent problem-solving skills and attention to detail Strong communication skills and the ability to work independently More ❯

practices (code quality, CI/CD, security etc). Working within a project management/agile delivery methodology. Experience in technical ownership for a product or software solution, covering design, estimation, shaping and user story/requirement creation. Documentation of solutions (e.g. architecture, configuration, release, support-handover). Collaborate and liaise with other Version 1 and customer stakeholders/… practices and modern architectural patterns, including microservices and message-driven architectures. NFR/Non-Functional requirement understanding and experience developing applications with this in mind. Application/Digital Services Design experience. Experience in software engineering practices like Code Reviews, CI/CD Pipelines and SOLID/DRY principles. Hands-on developing/coding role using the following technologies: Frontend … JavaScript/TypeScript or Angular or React or Node). Backend (Java, SpringBoot, Hibernate, Kotlin). Experience in estimation and sizing. Integration experience. API Design experience. Cloud experience. Appetite to work with emerging AI technologies. SC Eligible. Additional Information Why Version 1? At Version 1, we believe in providing our employees with a comprehensive benefits package that prioritises More ❯

experience in some of these, but if not we’ll help you with them AWS Certification at Associate level eg Solution Architect, Developer or DevOps Expertise in microservices and API design Docker, and container runtime platforms such as Kubernetes, EKS, ECS etc Strong understand of operational concepts on AWS, particularly monitoring and observability, FinOps Utilising CI/CD More ❯

focus spans across multi-domain advancements, initially targeting the medical, education, and legal sectors. We specialize in turning innovation into impact. We are seeking an experienced Solution Architect to design and own the solution architecture for our scalable SaaS and custom products . The ideal candidate will align with the product roadmap, purpose, and feature use cases to define … architecture. This role demands a strong focus on Microservices Architecture , ensuring that our solutions are scalable, configurable, and cloud-agnostic, with seamless integrations across various systems. Key Responsibilities: Architecture & Design: Microservices Focus : Architect, design, and implement a robust microservices-based solution, enabling agility, scalability, and independent service deployments. Define and own the solution architecture for the product, ensuring … scalability, configurability, and cloud-agnostic capabilities. Develop HLD (High-Level Design) and LLD (Low-Level Design) documents for the product. Create and maintain the deployment architecture , ensuring efficient and resilient deployment strategies. Design the integration architecture , including APIs, microservices, and third-party integrations. Technical Leadership: Guide engineering teams in implementing the architecture while ensuring best practices in More ❯

special focus on customer-facing interactions and ensuring that our solutions meet their business needs. The role will report into the Director of Product and Technology. Responsibilities Architecture & Solution Design: Oversee the technical architecture of our solutions, ensuring they meet performance, scalability, and security requirements. Design and develop scalable AWS architectures for API-based and data-centric … and storage solutions using AWS services such as S3, OpenSearch, Redshift, Step Functions, Lambda, Glue, and Athena. Architect RESTful APIs, ensuring security, performance, and scalability. Optimise microservices architecture and API management strategies, leveraging tools such as KONG Gateway, Lambda, and EKS. Collaborate with DevOps teams to implement CI/CD pipelines, Infrastructure as Code (IaC), and automation using AWS … approved projects and explore new opportunities. Document solutions with specifications, estimates, and delivery timelines. Leadership & Mentorship: Provide technical leadership and mentoring to development teams, ensuring best practices in AWS, API design, and data architecture. Support the technical delivery team with troubleshooting and solution design. Line manage a Product Specialist, providing guidance on product packaging and administrative tasks. Qualifications More ❯

challenge of doing more with less. Full Ownership : Take end-to-end ownership of internal platforms, from conception through deployment and ongoing optimization. Core Responsibilities Technical Integration & Platform Development Design and implement robust API integrations between Intercom, internal systems, and third-party platforms Build and maintain our internal web-based admin tools and dashboards Develop scalable, maintainable full … tools that measure system performance and effectiveness Create analytics features that help identify patterns and opportunities for improvement Build data visualization components that make insights accessible to business stakeholders Design and maintain database schemas that support efficient querying and reporting Cross-Functional Engineering Collaboration Reporting directly to the Head of Customer Support to translate business requirements into technical solutions … automation Resolution Impact : Technical contribution to reducing customer issue resolution time What You'll Bring Essential Requirements Full-stack development experience with proven ability to ship production applications Strong API development expertise including REST, GraphQL, and third-party integrations Proficiency in JavaScript, HTML, and CSS with modern framework experience Database design and implementation experience (SQL and NoSQL) Experience More ❯

Looks Like - We achieve product-market fit through rapid iteration and customer feedback. - Our delivery velocity accelerates as our microservices architecture matures. - All features are accessible via a robust, API-first approach. - Our services are resilient, observable, and easy to maintain. What You Bring - Degree in Computer Science, Software Engineering, or equivalent experience. - Extensive hands on experience designing, building … and deploying distributed systems using microservices and event sourcing with Node.js and React. - Solid experience of service-to-service communication, API design, and contract testing. - You are comfortable in agile environments, resolving ambiguity. - Strong focus on customer needs, with a passion for building platforms that empower clients. - Commitment to cybersecurity best practices and data privacy. - Automation-first mindset More ❯