76 to 100 of 173 Remote/Hybrid API Design Jobs

Senior Product Manager - LLM Inference

Location
United Kingdom
Senior Product Manager — LLM Inference to own the strategy, roadmap, and commercial success of Runware's LLM inference offering , spanning our on-demand Model API and dedicated inference solutions. This is a hands‐on senior individual contributor role with end‐to‐end ownership of the customer‐facing LLM product … from initial model discovery and API integration to production adoption, scaling, and enterprise expansion. You'll work at the intersection of developer experience, LLM capabilities, inference performance, and unit economics , identifying where Runware can deliver the most value and translating customer needs into a focused, commercially sustainable product roadmap. ...

Senior Application Security Engineer / DevSecOps Engineer

Hiring Organisation
Additional Resources
Location
London, United Kingdom
Employment Type
Permanent
teams to integrate security throughout the software development lifecycle. Microsoft Azure and KQL experience are essential , alongside relevant experience in CI/CD, Kubernetes, API security, security-as-code and security automation . This is a hands-on application security role focused on secure design, application security testing … Integrating security controls into CI/CD pipelines. Strengthening the security of GitHub Actions and similar CI/CD platforms. Providing guidance on secure API design and externally accessible systems. Supporting Azure cloud infrastructure, including Azure Kubernetes Service (AKS). Developing security-as-code and policy-as-code. ...

Staff Backend Engineer, Content Platform

Location
Greater London, England, United Kingdom
design Spotify’s consumer experience—end to end, moment to moment, across every screen, platform, and partner integration. Our mission is to make listening feel effortless, personal, and joyful for billions of users around the world. That means turning complexity into clarity across hundreds of touchpoints—from our mobile … cars, and integrations where Spotify shows up every day. If it touches a consumer, we shape it. We bring deep insight into human behavior, design, and technology to craft experiences that feel intuitive, expressive, and unmistakably Spotify. Policy & Safety (P&S) is a domain within Content Platform ...

Technical Architect

Hiring Organisation
McGregor Boyall Associates Limited
Location
South East, United Kingdom
Employment Type
Contract
Processing, and Cash & FX. You'll act as the technical authority within delivery teams, driving architecture strategy, governance, and engineering best practice. Key Responsibilities Design modern microservices and event-driven architectures using technologies such as Kafka, REST APIs and cloud platforms. Lead architecture governance, technical reviews, non-functional requirements … Processing Strong software engineering background in Java, Spring Boot, Oracle and SQL databases. Proven experience with: Microservices architecture Event-driven systems (Kafka, MQ, Solace) API design and integration AWS and/or Snowflake Knowledge of SWIFT MT, ISO 20022 and post-trade processing workflows. Experience operating within enterprise ...

Technical Architect

Location
Greater London, England, United Kingdom
Processing, and Cash & FX. You'll act as the technical authority within delivery teams, driving architecture strategy, governance, and engineering best practice. Key Responsibilities Design modern microservices and event-driven architectures using technologies such as Kafka, REST APIs and cloud platforms. Lead architecture governance, technical reviews, non-functional requirements … Processing Strong software engineering background in Java, Spring Boot, Oracle and SQL databases. Proven experience with: Microservices architecture Event-driven systems (Kafka, MQ, Solace) API design and integration AWS and/or Snowflake Knowledge of SWIFT MT, ISO 20022 and post-trade processing workflows. Experience operating within enterprise ...

Laravel Developer

Location
Greater London, England, United Kingdom
typical day might look like: Develop and maintain Laravel applications with clean, efficient code Integrate third-party services and APIs into web applications Design and implement RESTful APIs and microservices Collaborate with cross-functional teams to define and implement new features Write comprehensive tests and ensure code quality Responsibilities … Develop and maintain Laravel applications with clean, efficient code Integrate third-party services and APIs into web applications Design and implement RESTful APIs and microservices Collaborate with cross-functional teams to define and implement new features Write comprehensive tests and ensure code quality Optimize application performance and scalability Stay ...

Senior Full Stack Developer

Location
Newbury, England, United Kingdom
understand dependencies and preserve existing functionality. Migrate data and database functionality from Microsoft SQL Server to MySQL, ensuring data integrity and reliable application behaviour. Design, develop and maintain backend functionality using C# and .NET Core APIs. Build and integrate frontend functionality within the single Angular web application using TypeScript … Architect to agree technical approaches, priorities and delivery plans. Your Skill Set Proven experience as a Senior Full Stack Developer working across database, backend API and frontend application development. Strong experience with C#, .NET and modern .NET Core application development. Strong hands-on experience with Angular and TypeScript. Extensive ...

Full Stack Developer

Location
Cwmbran, Wales, United Kingdom
product development and ongoing application support. This is a hands-on role with real influence over how our products evolve. What you'll do Design, build, and maintain applications using Python and Django Work across the full stack, including front-end components (React, JS, CSS) Translate business and user … occasionally with clients Contribute to CI/CD pipelines using Azure DevOps What you'll need to succeed: Essential Experience Python 3+ years' API Integrations Strong SQL skills (MySQL or PostgreSQL) Solid front-end fundamentals (HTML, CSS, JavaScript, React, Angular) Good understanding of software design principles and best ...

Software Engineer - AI Integration - Fixed Term Contract - 12 months

Location
Liverpool, England, United Kingdom
Disability Confident employer and welcome applicants from all backgrounds. If you need adjustments during the recruitment process, just ask. What You’ll be Doing Design, build, test and maintain backend services and APIs, primarily using Java. Develop accessible, user-facing features using TypeScript and React. Use Python for analytics … Copilot, Claude Code or comparable tools. Strong communication, collaboration and problem-solving skills. The ability to take ownership of defined work, contribute to technical design and deliver to an agreed standard. Desirable Experience with Spring Boot, TypeScript and React. Familiarity with AWS services such as ECS, Lambda ...

Senior Software Engineer (Belfast, UK)

Location
Belfast City District, Northern Ireland, United Kingdom
5+ years Java; Java 17+/21, Spring Boot or equivalent Stream/event-driven services at volume (Redis Streams, Kafka or similar) REST API design and ownership, contract-first Containerised services on Azure or another major cloud; Docker, CI/CD Strong SQL Desired Criteria: ClickHouse … OLAP store from the application side PostgreSQL with JSONB; in-process caching with invalidation Security telemetry: Windows event logs, Active Directory, M365/Graph API, NetFlow Insider threat/UEBA/SIEM product experience Porting or re-platforming an existing system against a live reference implementation Comfortable reading C# ...

Senior Software Engineer, System Orchestration

Location
Oxford, England, United Kingdom
onto it safely, contributing directly to the success of the System Software function. Key responsibilities include: Own a service or subsystem end to end - API design, implementation, rollout and ongoing operational health. Build closed-loop behaviour that acts on measured system state without a person in the loop. … Design state machines and their persistence together, so that what survives a restart is a decision rather than an accident. Make our services behave correctly under concurrency and partial failure.Move live systems onto new behaviour without losing data or interrupting work in flight. Evolve our APIs, and bring ...

Engineering Tech Lead - Platform Capability

Location
Greater London, England, United Kingdom
also: Lead, mentor and grow a squad of developers while staying close to the code Treat non-functional requirements as part of the design from the start, not something to deal with before go-live: performance budgets, availability, security, auditability, operability and cost Design and build back … observable and supportable in production, and help run incident response and learning when things go wrong Use AI throughout the software development lifecycle, from design and build through to testing and review Help shape how AI coding agents fit into our engineering workflow, including the guardrails, review standards ...

Platform Capability Tech Lead - Backend & AI

Location
Greater London, England, United Kingdom
also: Lead, mentor and grow a squad of developers while staying close to the code Treat non-functional requirements as part of the design from the start, not something to deal with before go-live: performance budgets, availability, security, auditability, operability and cost Design and build back … observable and supportable in production, and help run incident response and learning when things go wrong Use AI throughout the software development lifecycle, from design and build through to testing and review Help shape how AI coding agents fit into our engineering workflow, including the guardrails, review standards ...

Senior Product Security Engineer

Hiring Organisation
ARM
Location
Cambridge, Cambridgeshire, UK
Employment Type
Full-time
Python and comfortable in scripting (e.g. bash).Proven experience designing, building, and operating backend services or internal platforms in production environments. Strong understanding of API design, service-to-service integration, and backend architecture. Experience working in cloud environments, ideally AWS.Experience with containers and related tooling, for example Docker. ...

Technical Lead

Hiring Organisation
Vanguard
Location
Manchester, UK
Employment Type
Full-time
Responsibilities Technical Leadership Provide expert-level technical direction for the public UKPI web estate — Angular front-ends, Node.js services, and AEM-authored content. Lead design, development, and implementation across the monorepo's apps and shared libraries. Solution Architecture & Governance Define and enforce architectural standards (module boundaries, shared-library design … enhancements. What it takesKey Skills Experience with JavaScript/TypeScript, Angular, HTML, CSS, and modern Node.js; working knowledge of Java. Familiarity with microservice architecture, API design, and integration patterns. Knowledge of AWS services and cloud-based deployment (ECS, CloudFront, CDN/edge concepts). Strong understanding ...

Technical Lead

Location
Manchester, England, United Kingdom
Responsibilities Technical Leadership Provide expert-level technical direction for the public UKPI web estate - Angular front-ends, Node.js services, and AEM-authored content. Lead design, development, and implementation across the monorepo's apps and shared libraries. Solution Architecture & Governance Define and enforce architectural standards (module boundaries, shared-library design … What it takes Key Skills Experience with JavaScript/TypeScript, Angular, HTML, CSS, and modern Node.js; working knowledge of Java. Familiarity with microservice architecture, API design, and integration patterns. Knowledge of AWS services and cloud-based deployment (ECS, CloudFront, CDN/edge concepts). Strong understanding ...

Portfolio Software Full Stack Engineer (Contractor)

Location
Cambridge, England, United Kingdom
candidate will have extensive experience building backend services using Node.js and TypeScript , with a strong understanding of modern software engineering practices, distributed systems and API design. While this is a full stack role, the primary emphasis is on backend development, system architecture and code quality . Experience with frontend … assisted development tools , reviewing both human-written and AI-generated code, and contributing to technical discussions around architecture and system design. Responsibilities Backend Development Design, develop and maintain scalable backend services using Node.js, TypeScript and modern backend frameworks such as Express.js or similar. Design and implement RESTful APIs ...

Senior React & Node Developer (AI & Full Stack)

Hiring Organisation
Infused Solutions Ltd
Location
London, United Kingdom
Employment Type
Permanent
Salary
£65000 - £75000/annum
part of a small, highly experienced engineering team responsible for transforming ambitious ideas into production-ready software. Working closely with Product, Design and AI specialists, you'll take concepts from whiteboard sketches through to prototypes, proof of concepts, MVPs and ultimately scalable products. If you enjoy solving complex problems … frontend development, backend engineering and cloud technologies to rapidly build and validate new AI-powered products. You'll be heavily involved in architecture, technical design and proof-of-concept development, collaborating directly with stakeholders to transform ideas into working software. This is a hands-on engineering role where ...

Full Stack Developer (Python & Typescript)

Hiring Organisation
IO Associates
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£500 - 525 per day + Depending on experience
strong software engineering background who enjoys building robust, scalable solutions across both backend and frontend technologies. Essential Skills Strong Python development experience FastAPI, API design, middleware, and asynchronous development patterns Pydantic and schema validation PostgreSQL database design, migrations, and query optimisation React and TypeScript Authentication and authorisation ...

Senior Software Developer

Location
Brighton, England, United Kingdom
indexing data for searching. Skills required: At least 8 years’ experience in C# .Net, SQL Knowledge of some queue brokering technology, e.g., RabbitMQ API design experience (preferably .NET 10.0 Web API)/REST-based web services Orleans and Event Store .Net Core Elastic Search (with Kibana dashboards ...

Full Stack Java Engineer

Location
Shefford, England, United Kingdom
nearly 1000 full-time professionals, and our annual growth rate exceeds 25%. Job Description We are looking for a Full Stack Engineer to design, develop, and support scalable cloud-native applications that power Workforce Management (WFM), Customer Experience (CX), and operational business processes. You will use Java … where appropriate for supporting components. The role suits a hands‐on engineer with strong software development fundamentals who can take features from detailed technical design through implementation, testing, deployment, and production support. Experience with Workforce Management (WFM), Customer Experience (CX), or contact center solutions is an advantage Responsibilities: Design ...

Middle Java Developer

Location
Greater London, England, United Kingdom
expertise as it is about analysis. What You'll get to do: Develop, maintain, and enhance microservice applications using Java 21+ and Spring Boot. Design and implement scalable, resilient, and high-performance solutions. Work with relational and OLAP databases, writing efficient SQL queries in PostgreSQL and ClickHouse. Develop code … process complex data structures to/from Kafka. Ensure best practices in microservice architectures, including API design, scalability and security. Collaborate closely with other team members, including DevOps, Front End, Product and QA Participate in code reviews, technical discussions and continuous improvement initiatives. What we’re looking ...

Software Engineer, Core AI Services

Location
Cambridge, England, United Kingdom
Type: full-time We are looking for a passionate Software Engineer to join our Core AI Services team. In this role, you will help design, develop, and scale AI-enabling platform services and public APIs that are secure, reliable, and cloud-native. These services will act as foundational building … across data pipelines, orchestration, and service APIs. Embed robust security controls to protect sensitive data and ensure secure access to AI services. Participate in design reviews, code reviews, and implementation discussions to ensure engineering excellence. Essential requirements Minimum of 2 years professional experience in software engineering, preferably in platform ...

Technology Developer U.S.

Hiring Organisation
Purolator International
Location
Woodbury, New York, United States
Employment Type
Any
Salary
GBP Annual
business processes. You'll work directly with clients to translate requirements into practical software solutions and contribute throughout the development life cycle, from design through deployment and ongoing support. Your work will span existing Microsoft-based applications and future cloud modernization, with C#, ASP.NET MVC, .NET Framework, .NET Core … Woodbury, NY office. The regular schedule is Monday-Friday, 8:30 a.m.-5:00 p.m. EST.This is not a remote role.ResponsibilitiesWhat You'll Do Design, develop, and maintain enterprise-level applications usingC both.NET Frameworkand.NET CoreinMVC architecture. Build and support web applications usingASP.NET MVC,ASP.NET Web Forms, andRazor Pages. Build ...

Senior Software Engineer

Location
Cambridge, England, United Kingdom
company offers highly competitive remuneration, an excellent benefits package and work-life balance including hybrid work. The core requirements: A senior software engineer’s design and coding ability and track record, judgement, mentoring and review skills. Strong commercial-grade C# software development with awareness of modern .NET … language, and establish good patterns and factoring. Microservice development experience – with good service factoring to reduce bloat, increase independence and separate concerns – and RESTful API design and development. Strong communication skills to liaise with colleagues in other product teams. A good technical degree from a top university, backed ...