426 to 445 of 445 Permanent API Design Jobs

Senior Software Engineer

Hiring Organisation
Reed Technology
Location
Berkhamsted, Hertfordshire, United Kingdom
Employment Type
Permanent
Salary
£60000 - £80000/annum
resolve defects, ensuring the reliability and stability of the company's platforms aligning with the broader Technology Strategy. Day-to-day of the role: Design, build, test, and ship features across .NET/C# backend and Angular frontend applications. Write clean, well-tested, maintainable code and uphold those standards … administration tasks including deployments, patching, and environment configuration to reduce manual effort and risk. Contribute to architectural decisions, providing input on technology choices, system design, and platform adoption. Use Infrastructure as Code (IaC) to manage and provision Azure resources, ensuring environments are reproducible, auditable, and consistent. Build and maintain ...

Mac UI Frameworks Engineer,Cocoa

Location
Greater London, England, United Kingdom
Apple's platforms. You will be responsible for bringing your ideas to life through all stages of their development: from initial research, to API design and proposals, to testing and development in Swift, to documentation and offering guidance to adopters. You'll join us in energetic discussions … team's work is at a critical part of the macOS stack and we are core contributors to new operating system features, such as design refreshes, new hardware, intelligence integration, and many others - we build what users expect from all apps on the platform. You'll also have ...

Lead Solutions Engineer — Apps & Gaming (Advertising Tech)

Location
Greater London, England, United Kingdom
turn business needs into robust technical outcomes. The role requires a hands-on leader with a track record in software delivery, ML infrastructure, and API design, capable of guiding cross-functional groups and communicating complex concepts clearly across audiences. #J-18808-Ljbffr ...

Cuspai Mid-Level · On-site · London, UK 07 de nov. United Kingdom Scientific Software Engineer (Lab Integration) back-end next.js python fastapi +8

Location
Greater London, England, United Kingdom
material.What You Will DoHelp shape how we connect to partner labs around the world, accounting for different levels of automation and AI-readiness, then design, build and operate the services that send experiment requests from our AI agents and reliably bring results back.Build APIs and data models (e.g. FastAPI … throughput experimentation data pipelines.Strong software engineering background, with production experience building and operating backend services.Deep fluency in Python, including typed, well-tested code and API design.Experience designing distributed systems that integrate with external parties: APIs, message queues or event-driven architectures, and data contracts.Solid understanding of security practices ...

Frontend Lead

Location
England, United Kingdom
integrates seamlessly with our Backend-for-Frontend (BFF) layer, powered by Spring Boot microservices , and deployed on Google Cloud Platform (GCP) . Key Responsibilities: Design and build a high-performance frontend framework using React.js and Micro Frontend (MFE) architecture . Implement SSR/CSR hybrid strategies to optimize rendering … enhance frontend-backend interactions. Improve frontend performance using lazy loading, predictive prefetching, tree shaking, and edge caching. Collaborate with backend engineers to optimize API designs and system efficiency. Define best practices for state management using Redux and Redux-Saga/Thunk for handling complex application flows. Optimize frontend applications ...

Backend Engineer (Ruby), Plan: Spec-Driven Development

Location
United Kingdom
interfaces, and an artificial intelligence gateway.You'll join a small, distributed team working on one of GitLab's highest-visibility product bets, collaborating with design partners toward a public beta. In your first year, you'll lead major features from an unclear problem through release, help shape scope with … other engineers, and influence technical decisions across agent workflows and evaluation methods.What you’ll do- Lead backend features from early product discussions through technical design, implementation, rollout, and post-launch learning.- Build the flows, application programming interfaces, and data models behind agent-generated work items, implementation plans, durable specifications ...

Senior C++ Software Engineer – AI Developer Tools

Location
United Kingdom
NVIDIA’s AI-powered developer-tools ecosystem. Build reliable, performance-sensitive systems connecting native C++ tools with Genie’s retrieval and agentic capabilities. Design maintainable interfaces between C++ applications and AI services exposed through Python, MCP, REST APIs, and structured tool calling. Contribute to agentic workflows, retrieval systems, ingestion … experience. 5+ years of professional experience developing complex production software in modern C++. Strong knowledge of software architecture, concurrency, debugging, performance optimization, and maintainable API design. Experience owning complex systems from design through implementation, deployment, and ongoing operation. Practical experience with AI-powered applications, agentic workflows, developer tools ...

Senior Full Stack Engineer (UK)

Location
United Kingdom
first, builds with modern tooling, and brings strong React/TypeScript front-end instincts alongside solid back-end capability. What You’ll Own: Design and build full stack features end-to-end, from React/TypeScript front ends to APIs and back-end services. Lead with an AI-first … development workflow, tooling, and processes — with an eye for where AI can accelerate delivery and quality. Collaboration & Communication Work closely with Engineering, Product, and Design to deliver high-quality products across the full stack. Contribute to architectural decisions and help define standards for AI-assisted development across the team. ...

Lead Software Engineer - AWS - Lead AI/ML Platform Engineer

Location
Greater London, England, United Kingdom
value creativity, collaboration, and a commitment to excellence. As a Software Engineer in the Firmwide AI/ML Deployment Platform team, you will design and develop cloud-native solutions that support model deployment across the organization. You will work closely with data scientists and engineers to deliver features that … seamless integration of control plane and client accounts Develop and implement APIs for platform functionalities such as automated retraining, scheduling, endpoint deployments, and autoscaling Design robust features to support a growing internal customer base, including multi-region and disaster recovery capabilities Architect and implement model monitoring solutions, with emphasis ...

Member of Technical Staff - Applications

Location
Greater London, England, United Kingdom
usable interfaces. Feed delivery learnings back into platform patterns and defaults so the next system ships faster. What You\'ll Work With Full-Stack & API Development: React, TypeScript, REST, gRPC, FastAPI, Go services, API design. Auth & Governance: OIDC authentication, RBAC, audit logging. Workflows & Integrations: Event-driven systems, workflow … About You Strong full-stack engineering background with experience shipping production-grade applications end-to-end. Comfortable owning the full delivery surface — UI through API through auth — without needing to hand off between layers. Experience integrating with external systems or customer environments and making those integrations reliable and maintainable. ...

Security Engineer - Hybrid London: App & Cloud Security

Location
Greater London, England, United Kingdom
core to our product and to client trust. As our Security Engineer, you will make our platform, cloud estate and internal systems secure by design, working hand in hand with our engineering team. Reporting to the Head of Engineering, this is a permanent, hands-on role where you will … SaaS estate. Own email security and authentication. Own endpoint security across our Windows and Mac fleet, including EDR policy tuning and validation testing. Design and maintain federated authentication with clear rollout guides and rollback procedures. Security monitoring and detection Build, extend and maintain security monitoring across our technical estate ...

Senior Laravel Developer

Location
Greater London, England, United Kingdom
pick up themselves. Work alongside our London team, with direct access to the people building and supporting Jodie. What you'll own Design and ship Laravel services, APIs and background jobs with clear contracts and useful observability. Make webhook processing resilient to retries, duplicate events and partial failures. Improve … ship. What you'll bring Substantial experience shipping and maintaining production Laravel and PHP applications. A strong grasp of relational databases, queues, caching and API design. Practical experience with automated tests, secure authentication and safe deployments. Examples of investigating a production problem and improving the system afterwards. Useful ...

Lead Software Engineer

Location
Greater London, England, United Kingdom
This means that theywill only offer products and features that make sense. They aredriven by the best practices of user experience with user-centric design at the heart of everything they do, making products fun and easy to use. And they will work relentlessly and leverage our deepest expertise … DeFi. About the opportunity You will be in charge of delivering high-performance, scalable and beautiful web3 applications. You will lead the engineering team, design back-end and front-end architecture, write and release top quality code and refine DevOps practices. You will push the boundaries by delivering technical ...

Genesis-World: Core Simulation Engine Engineer

Location
Greater London, England, United Kingdom
cryptic error, a manual step: you see it, you go after the root cause, and you remove it for everyone. You have opinions about API design. You are comfortable with physics and robotics: the right design choices take a working picture of what a simulator like Genesis-World ...

Product Manager

Location
Greater London, England, United Kingdom
fintechs and enterprise market data platforms. Working at the intersection of market data, product management and technology, you will transform customer needs into scalable API products and guide delivery through our SAFe Agile organization. What You Will Do Define and own the product roadmap, vision and priorities … Performance API platform covering streaming, snapshot, historical, metadata and entitlement services. Conduct customer interviews and market research to identify customer requirements, pain points and future market opportunities. Define and monitor product KPIs including customer adoption, latency, scalability, service quality and customer satisfaction. Translate business requirements into features, acceptance criteria ...

Senior Business Analyst - 12 months FTC

Location
Greater London, England, United Kingdom
required to analyse and determine business requirements and create user stories which will lead to the development of business solutions software, UI and API designs. You will act as the business lead supporting one or more scrum team. In addition, you will be required to work with clients … produce business design documents and assist with the production of HLEs and/or FPQs. You’ll be joining a global, diverse team in an Australian based company and collaborate with cross-functional teams. This is a permanent full time opportunity based in London. What U will do: Business ...

Quadrants: Compiler Lead

Location
Greater London, England, United Kingdom
Engineers write plain Python in a NumPy or PyTorch style, and Quadrants makes it fast. The role You own Quadrants end to end: the API, the IR and lowering, the optimization passes, the numerical primitives, and the roadmap. Our ultimate objective: engineers write for readability and maintainability, never … limit what the system supports to go fast (static shapes and fixed‐size allocation baked into kernels, say), but never the convenience of the API itself. Experts who want maximum performance and full control over the generated code get lower‐level escape hatches, down to inline assembly ...

Product Compliance Specialist

Location
Greater London, England, United Kingdom
globally. Role Overview We are looking for a forward-thinking Product Compliance Manager to bridge the gap between financial regulations and cutting-edge product design across both our UK/European and Hong Kong markets. In this role, you will champion "Compliance-by-Design," embedding regulatory integrity into … product development lifecycle from ideation to deployment. You will collaborate directly with Product Managers, Engineers, and Commercial teams to design frictionless, fully compliant user journeys for POS solutions, Open Banking/Pay-by-Bank workflows, and cross-border settlement rails. Key Responsibilities Compliance-by-Design & Product Advisory: Serve ...

Product Manager - Cards Platform - Accelerator Business

Location
Greater London, England, United Kingdom
company, and on our clients and business partners around the world Job responsibilities: Be the voice of customers in your product and API designs, and play an active role in designing a product development process that engages customer point-of-view and insights frequently Own key customer journeys, with … dependencies and align execution, ensuring any shared customers are shielded from unnecessary coordination complexity Gather and write product requirements through collaborative stakeholder partnerships (engineering, design & research, legal, controls, and peer product teams, etc.) Shape visions alongside execution goals (via OKRs) to ensure the team stays inspired while iteratively delivering ...

APPLICATION ARCHITECT L1(CONTRACT)

Location
Corby, England, United Kingdom
consulting company focused on building innovative solutions that address clients’ most complex digital transformation needs. Leveraging our holistic portfolio of capabilities in consulting, design, engineering, and operations, we help clients realize their boldest ambitions and build future-ready, sustainable businesses. With over 230,000 employees and business partners across … payment processing by integrating SAP systems with external Payment Service Providers (PSPs), payment gateways, banks, and digital payment platforms. The role involves payment process design, payment gateway integration, troubleshooting payment transactions, supporting business operations, and ensuring compliance with financial and regulatory requirements. Key Responsibilities: Implement SAP Digital Payments ...