326 to 350 of 455 API Design Jobs

Backend Engineer (Data Pipelines)

Location
Greater London, England, United Kingdom
engineer who lives and breathes Laravel. You'll build APIs that process millions of Stripe transactions, optimize MySQL queries that make databases purr, and design data pipelines that never miss a beat. You'll work on real problems: handling webhook storms from Stripe, making complex analytics queries … together, learn from them, and then grab a beer. What You'll Do Build and maintain Laravel APIs powering our web and mobile apps Design MySQL schemas and write migrations that keep data integrity rock-solid Process millions of Stripe webhooks using AWS Lambda and SQS queues Optimize MySQL ...

Senior Software Architect: Ground Segment & Edge Networking

Location
Greater London, England, United Kingdom
fraction of the cost of developing these systems independently. Backed by leading venture capital investors and engineering partners, we are rapidly scaling the design, production, and deployment of the satellites, ground systems, and network infrastructure that will power Meridian's next-generation constellations. Joining Meridian means working … part of a close-knit, collaborative team that thrives in a fast-paced, innovative environment, where your work directly advances the design, development, and deployment of satellite constellations that governments and enterprises around the world will depend on for secure, resilient, and sovereign connectivity. Your Mission on the Team ...

Senior Backend Engineer

Location
Greater London, England, United Kingdom
server-side foundations of Seamlessly. You will design and build the APIs, integrations, and AI workflows that turn every voice note and business card into structured CRM data. This is a senior role: we expect 10+ years of professional engineering experience. What you will do Design and build … backend. Shape the architecture as Seamlessly grows. What you will bring 10+ years of engineering experience, with senior production experience on TypeScript backends. Strong API design instincts and a track record of integrations that hold up at scale. Salesforce platform experience (Apex, SOQL, REST APIs, custom metadata). ...

Game Developer

Location
Greater London, England, United Kingdom
heart of immersive, physical learning and play. You implement the game formats designed by our content team, in close partnership with our engineering and design teams. You combine our many device capabilities to make delightful, surprising experiences: Using audio, voice, display, light, haptics, and sensing of physical objects. … company to be the place where you do your best work: With autonomy, curiosity, optimism, and playfulness. What You’ll Work On Experience Design and Implementation Implement the game formats and experiences our content team designs Turn rough prototypes into robust, replayable experiences Design abstractions that allow ...

C# .NET Developer – 11902SR1

Location
West of England, England, United Kingdom
joining an established team where you’ll have the opportunity to work alongside other Junior and experienced developers, contributing to the design and development of new applications and features, and help maintain and improve existing systems. Responsibilities: Develop, test, and deploy efficient, scalable, and maintainable applications using C# … . 2 – 5 years of professional experience in backend development. Strong proficiency in C# and .NET Core (latest versions). Solid understanding of RESTful API design and integration. Familiarity with CI/CD pipelines and Git for version control and continuous integration. Excellent problem-solving and analytical skills ...

Applied Value Engineer

Location
Greater London, England, United Kingdom
finance). Ability to speak the language of business leaders and connect operational bottlenecks to strategic AI solutions. Software/Data Engineering: Python proficiency, API design, SQL, data integration, and ML/AI libraries (PyTorch, TensorFlow, scikit-learn, XGBoost, Hugging Face Transformers). Agentic AI Systems: Hands … Earth Is Our Future—drive every decision. About Us: Celonis is the trusted platform to industrialize Enterprise AI, empowering organizations to analyze, design, and operate AI-driven processes. The Celonis Platform is powered by the Celonis Context Model, which combines process data, business knowledge, and intelligence to create ...

Remote .NET Developer — Cloud, Microservices & AI Tools

Location
Newcastle upon Tyne, England, United Kingdom
development across requirements, development, testing, and production deployment within the Service Reliability Group, using C#, .NET Core/.NET Framework, and EF Core, with API design and multi-tier integrations. You will also own and improve CI/CD pipelines using Jenkins and Azure DevOps, apply unit testing ...

Senior Software Engineer, Non-Realtime Controllers

Location
Oxford, England, United Kingdom
with support for the teams and scientists who depend on them. Key responsibilities include: Own a group of device controllers end to end, covering API design, implementation, rollout and ongoing operational health. Make services robust against the ways real instruments fail. Bring devices onto our current framework ...

Front End Developer - Flights

Location
Greater London, England, United Kingdom
users You're excited to work with technologies such as React, NodeJS, TypeScript, React Hooks, Docker, Kubernetes Very good understanding of APIs design and platform performance. Experience with service oriented architecture. Experience with defining and upholding SLOs/KPIs. Experience with data-driven product development: analytics, A/ ...

Integration Lead

Hiring Organisation
Espire Infolabs Limited
Location
Lancaster, Lancashire, North West, United Kingdom
Employment Type
Permanent
Client as required Experience: 10+ years in enterprise integration Role summary You will be the Espire face of the Client account. You lead integration design and delivery on Azure APIM, own the relationship with LUs programme team and the Salesforce SI (Creation), and coordinate the offshore team. The role … hands-on and client-facing and needs someone confident in a politically complex university environment. Responsibilities Lead integration design, build and delivery across all in-scope systems (Student management system, Unit4, Kinetics Kx, Moodle and others) on Azure APIM. Be the primary Espire point of contact and run stakeholder ...

Backend Engineer: Scalable Rust/C++ API for AI Inference

Location
Greater London, England, United Kingdom
latency, and reliability across distributed systems. Familiarity with Docker, Kubernetes, and gRPC will be highly beneficial. You will own end-to-end responsibilities from API design to observability and scaling, ensuring robust deployment of billions of tokens per minute for developers worldwide. #J-18808-Ljbffr ...

Innovation Software Developer

Hiring Organisation
EOS IT Solutions
Location
Armagh, Co. Armagh, UK
Employment Type
Full-time
edge-to-cloud data flows using MQTT, CoAP, and related technologies. Build robust solutions capable of handling real-time and high-volume sensor streams. Design Modern APIs and ServicesDevelop secure, scalable REST and gRPC services using FastAPI, Flask, and Node.js. Implement authentication, authorization, observability, testing, and performance monitoring. Ensure … reliability, maintainability, and best-practice API design. Deliver Digital Twin ExperiencesIntegrate real-time operational data with advanced 3D and 4D visualizations. Work with OpenUSD, NVIDIA Omniverse, and Unreal Engine technologies. Create interactive digital environments that represent assets and processes over time. Integrate AI and Machine LearningEmbed AI/ ...

Web Developer

Location
Greater London, England, United Kingdom
technologies, ideally React/Redux and Typescript A solid understanding of real-time messaging on the Web, including low level protocol and API design Exposure to the following would be advantageous: RxJS, Webpack, Storybook & Websockets Knowledge of Java would be beneficial but is not a necessity Passion … Interaction design Strong communication skills Relevant academic qualifications, including a college degree in computer science or equivalent Some knowledge and experience within the financial industry #J-18808-Ljbffr ...

Senior Lead Software Engineer - Java & Python (Low-Latency)

Location
Greater London, England, United Kingdom
JPMorganChase in London is seeking a Sr Lead Software Engineer (Java/Python) to help design, build, and deliver high-performance trading software within Digital Markets Execution Technology. You’ll contribute as a core technical member of an agile team, guiding architecture, coding, testing, and operations to meet ambitious … objectives. The role emphasizes secure, observable, and resilient systems, with leadership in code reviews, API design, and deployment across distributed environments. #J-18808-Ljbffr ...

Senior Backend Engineer — Architect Scalable Microservices

Location
Greater London, England, United Kingdom
leading global marketing company is seeking a Senior Backend Engineer to design and develop scalable backend systems for their unified marketing platform. This hands-on role requires strong expertise in Python and modern development patterns, with a focus on performance, reliability, and observability. You will collaborate cross-functionally … influence best engineering practices within a hybrid work environment. Candidates should be skilled in API design, architecture patterns, and cloud technologies. #J-18808-Ljbffr ...

Staff Engineer Decision Support & Planning Optimization

Location
Bracknell, England, United Kingdom
apply deep expertise in Python or Java backend engineering to deliver durable, scalable outcomes. Lead and apply deep expertise in software architecture and API design to deliver durable, scalable outcomes. Lead and apply deep expertise in document ingestion and retrieval patterns to deliver durable, scalable outcomes. Lead … Angular awareness to deliver durable, scalable outcomes. Mentor and guide junior and mid-level engineers, fostering a culture of technical excellence and continuous learning. Design and implement comprehensive testing strategies, including unit tests, integration tests, and end-to-end validation for knowledge management systems. Establish and enforce security best ...

Principal Software Architect (UK)

Location
Greater London, England, United Kingdom
fraction of the cost of developing these systems independently. Backed by leading venture capital investors and engineering partners, we are rapidly scaling the design, production, and deployment of the satellites, ground systems, and network infrastructure that will power Meridian's next-generation constellations. Joining Meridian means working … part of a close-knit, collaborative team that thrives in a fast-paced, innovative environment, where your work directly advances the design, development, and deployment of satellite constellations that governments and enterprises around the world will depend on for secure, resilient, and sovereign connectivity. Your Mission on the Team ...

Principal Software Architect (UK)

Location
United Kingdom
fraction of the cost of developing these systems independently. Backed by leading venture capital investors and engineering partners, we are rapidly scaling the design, production, and deployment of the satellites, ground systems, and network infrastructure that will power Meridian's next-generation constellations. Joining Meridian means working … part of a close-knit, collaborative team that thrives in a fast-paced, innovative environment, where your work directly advances the design, development, and deployment of satellite constellations that governments and enterprises around the world will depend on for secure, resilient, and sovereign connectivity. Your Mission on the Team ...

Software Engineer, Backend

Location
Greater London, England, United Kingdom
building an automated lab that lets AI agents run biology experiments. We're entering the era of agentic science where AI models can now design novel proteins, propose hypotheses, and iterate on experimental results. But they can't run the experiments themselves - that's still a manual, months-long … biotech today. Our automated lab is powered by a deep software + hardware stack: lab instruments worth millions of USD reverse-engineered into API-controllable hardware, dozens of devices orchestrated through complex workflows, full observability on everything that happens in the lab, processing pipelines for messy physical-world data ...

VP, Engineering Engineering · London ·

Location
Greater London, England, United Kingdom
today Drive the evolution of the platform toward a modular, agentic-ready architecture - opening the platform to AI agents, decomposing the stack into clean API surfaces, and building the infrastructure that retailers and partners can build on top of Champion AI-native ways of working within engineering itself - agentic … market moves Engineering Leadership & Organisation Lead and develop the full engineering leadership layer - Directors, senior managers, and functional leads across platform & product engineering Design the engineering org structure to execute on the product roadmap, scale with the business, and attract and retain the calibre of people NewStore needs ...

Mission-Driven Product Manager - Own the Roadmap

Location
Greater London, England, United Kingdom
will have ownership and autonomy from Day One. There is no corporate ladder at Arondite. From your first day, you will directly influence the design, functionality, and direction of Arondite’s product offering. We hire the best people and give them extremely high levels of autonomy … synthesising their feedback Building a clear, explainable process for prioritising work in the face of B2G uncertainty Communicating to and working with Engineering and Design to build powerful, simple features that can be customised to deliver value to a wide set of users Championing a culture of technical excellence ...

Contract Lead .Net Developer

Location
Greater London, England, United Kingdom
greenfield websites and digital applications from inception through to deployment. Drive the hands‐on engineering using modern .NET and C#, establishing robust coding standards, design patterns, and engineering best practices. Lead the implementation and integration of Optimizely CMS/DXP to power responsive, intuitive web experiences. Guide and mentor … .NET 6+) and C#. Strong commercial experience implementing, configuring, and extending Optimizely (formerly Episerver) CMS/DXP solutions. Solid understanding of modern web architectures, API design (RESTful services), headless setups, and cloud hosting environments (Azure preferred). Extensive experience working within Agile delivery frameworks (Scrum/Kanban), driving ...

Remote Senior Python Backend Engineer

Location
Greater London, England, United Kingdom
Webbyfox is a UK-based Python web development agency seeking a Senior Python Engineer to design, build and scale backend services powering our products. You will own services end to end—from architecture and API design to deployment and monitoring—and collaborate with product, data and DevOps ...

Senior iOS Engineer

Location
Havant, England, United Kingdom
product that blends artificial intelligence, aviation expertise, and seamless mobile user experience while partnering closely with our in-house designers. You'll turn complex design concepts into seamless, shippable code and help steer the future of our digital flight tools. What You’ll Do: Develop scalable, high-performance features … other core Apple frameworks (specifically MapKit or similar mapping SDKs) Experience integrating REST APIs, with enough backend understanding to troubleshoot issues and contribute to API design Strong understanding of iOS build systems, provisioning, certificates, and App Store requirements Strong proficiency in Git Bonus Qualifications: Bachelor’s degree ...

Senior Engineering Manager, AI/ML-Driven Travel Platform

Location
Greater London, England, United Kingdom
Expedia Group in London seeks a Senior Engineering Manager to lead the Hotels.com Technology team. You will guide design and delivery across high-traffic services, own API design and data models, and mentor engineers in a fast-moving, high-quality environment. You will stay technically hands … contribute to code reviews, and champion safe AI/ML adoption while partnering with product, design, data, and platform teams to drive value for travelers and partners. #J-18808-Ljbffr ...