51 to 75 of 173 Remote/Hybrid API Design Jobs

Senior Software Engineer, Core AI Services

Location
Cambridge, England, United Kingdom
passionate Senior Software Engineer to join our Core AI Services team at the forefront of industrial AI Innovation. In this role, you will help design, develop, and scale AI-enabling platform services, agentic workflows, and public APIs that are secure, reliable, and cloud-native. These services will … passion for keeping up with the latest AI engineering patterns and practices, eager to translate emerging tech into reliable, enterprise-ready software. Key Responsibilities: Design, build, and maintain scalable, fault-tolerant cloud-native services on Microsoft Azure. Develop secure, well-documented public APIs and SDKs for consumption by internal ...

Software Engineering Manager

Location
Bristol, England, United Kingdom
flow metrics, communicating timelines, dependencies, and risks early and transparently. Establish engineering guardrails across scope, quality, and non-functional requirements, enabling teams to design optimal solutions within them. Champion observability and operational excellence, ensuring system health, SLOs, and alerting are visible and actively managed. Partner with Tech Leads … Architects on system design and evolution, bringing structured thinking to complex, distributed environments. Foster a culture of ownership, collaboration, and continuous improvement, helping teams navigate technical and product challenges with clarity and purpose. Grow and develop engineers through coaching, feedback, hiring, and creating an environment that supports autonomy, mastery ...

Principal Product Engineer

Location
Greater London, England, United Kingdom
SDLC towards a more agentic one, you will use AI-assisted tools to increase technical leverage, improve engineering workflows and raise the quality of design, code review, testing and documentation - always with rigorous human judgement. Key Responsibilities Technical Direction : Lead the backend technical effort, establish architectural direction, and guide … team through complex design choices, refactoring priorities and engineering trade-offs. NestJS Architecture : Design and evolve a clean, modular NestJS architecture with clear module boundaries, dependency management, testability and maintainable conventions. Typed APIs and Contracts : Design well-typed, version-aware APIs and integration contracts that are clear ...

Senior Software Engineer — Infra Agent Systems UK

Location
Greater London, England, United Kingdom
infrastructure at massive scale, and help define how self-improving AI agents operate real-world AI infrastructure. Remote based in the UK Responsibilities Design and build production AI agent systems that diagnose, investigate, and remediate infrastructure issues across one of the world’s largest GPU fleets. Build the distributed … production into reliable, reviewed software and automation. Requirements 5+ years of experience building production backend systems, distributed systems, or infrastructure platforms. Strong systems design skills and experience owning significant systems from design through production. Depth in at least one of the following: AI agent systems, orchestration, tool ...

Senior Software Engineer — Infra Agent Systems UK

Location
United Kingdom
infrastructure at massive scale, and help define how self-improving AI agents operate real-world AI infrastructure. Remote based in the UK Responsibilities Design and build production AI agent systems that diagnose, investigate, and remediate infrastructure issues across one of the world’s largest GPU fleets. Build the distributed … production into reliable, reviewed software and automation. Requirements 5+ years of experience building production backend systems, distributed systems, or infrastructure platforms. Strong systems design skills and experience owning significant systems from design through production. Depth in at least one of the following: AI agent systems, orchestration, tool ...

Senior Principal Architect, CTO Office

Location
Greater London, England, United Kingdom
workloads Data foundations: pipelines andlakehousepatterns (Microsoft Fabric/OneLake, Databricks, or equivalents), streaming and event-driven integration where the problem demands it Enterprise integration: API design and consumption at scale, including REST, OData,GraphQL, and webhook/event patterns into ERP-class systems What sets candidates apart Classical … delivery on the CTO Office's highest-priority technical projects, end to end Write and review code daily; the role never becomes slideware Design and ship agentic and LLM-based systems to production standard: retrieval at scale, evals, guardrails, security and identity,monitoringand auditability Drop into unfamiliar codebases, stacks ...

NSL- Cloud Engineer

Hiring Organisation
BAE Systems
Location
Manchester, United Kingdom
Employment Type
Full Time
core mission capabilities. You’ll work as part of empowered, autonomous DevOps teams with regular contact with end-users to flexibly and efficiently understand, design, develop, deploy and maintain applications and services on AWS. You’ll be encouraged to identify new ways of solving problems and get to work … 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/ ...

Cloud Engineer

Hiring Organisation
BAE Systems
Location
Greater London, United Kingdom
Employment Type
Full Time
core mission capabilities. You’ll work as part of empowered, autonomous DevOps teams with regular contact with end-users to flexibly and efficiently understand, design, develop, deploy and maintain applications and services on AWS. You’ll be encouraged to identify new ways of solving problems and get to work … 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/ ...

NSL- Cloud Engineer

Hiring Organisation
BAE Systems
Location
City and Borough of Leeds, United Kingdom
Employment Type
Full Time
core mission capabilities. You’ll work as part of empowered, autonomous DevOps teams with regular contact with end-users to flexibly and efficiently understand, design, develop, deploy and maintain applications and services on AWS. You’ll be encouraged to identify new ways of solving problems and get to work … 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/ ...

GenAI Full-Stack Engineer

Location
Greater London, England, United Kingdom
part of a collaborative and forward-thinking team. Key Responsibilities Build impactful GenAI solutions: Within your first year, you will contribute to the design and delivery of our new GenAI platforms, directly impacting the productivity of thousands of developers. Shape our technical direction: You will contribute to the technical … Kubernetes, containers, microservices, and event-driven architectures. Solid architectural understanding: A good grasp of distributed systems, resiliency patterns, scalability, and performance engineering. Data and API proficiency: Knowledge of SQL and NoSQL databases, as well as API design and integration patterns. Strong collaboration skills: The ability to communicate ...

Senior Staff Architect

Location
Cambridge, England, United Kingdom
picture of how the platform is structured and how it evolves. You'll drive a model-first, domain-driven approach to design, so teams agree on the domain before the implementation. You will: Lead domain-driven design: facilitate domain modelling, define bounded contexts and maintain shared domain models. … Define the target architecture for Altium 365 and keep it consistent across every deployment. Guide the platform's openness: API strategy, integrations, the Developer Center, and the architecture that lets partners build vertical solutions on top. Shape how AI agents work with Altium data: MCP, authentication, scopes and security. ...

Lead Software Engineer - Solution & Data Architecture - B2B SaaS Fintech

Location
Greater London, England, United Kingdom
well before any code gets written, with clear communication about the outcomes to be delivered, followed by planning, prototyping when it helps, and a design the team agrees on. As technical lead of an R&D team, you'll work closely with a Product Manager on initiatives, improvements … time. You plan, size and hand out the work, and keep the team unblocked while it ships. Security, scalability, availability and performance are design inputs on every initiative, not a hardening phase at the end. You cover tenant isolation, auth, data protection and auditability, because our clients' data ...

Software Engineer - Backend

Hiring Organisation
Bright Purple
Location
Remote UK, Bath, Somerset, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £475/day
join the team redesigning their client portal. This is a hands-on role for an experienced mid-level or senior Python engineer. You will design and build the APIs and backend workflows behind new portal features and own your work through to production. You will work in a collaborative … designing maintainable REST APIs, with solid data modelling and relational database practice Good knowledge of authentication, authorisation, single sign-on patterns and secure API design A testing mindset and experience working with CI/CD Confidence diagnosing application, database and performance issues in live environments An understanding ...

Staff Backend Developer - Threat Intelligence

Location
United Kingdom
role based anywhere in the UK, reporting to the Sr. Director, Threat Intelligence in the Threat Intelligence department. In this critical role, you will design, implement, and maintain high-performance backend systems. You will collaborate closely with our malware reverse engineering team to build a sophisticated platform that enhances … Zscaler’s core threat detection capabilities.What you’ll do (Role Expectations)Build scalable data pipelines and design systems that ingest, process, and index large volumes of documents and data.Take the lead on improving development best practices across the team, championing standards for code reviews, testing, observability, and documentation.Identify ...

Full-Stack Engineer, Backend Leaning - Payments (Remote - UK, EU and US)

Location
United Kingdom
customer journeys from logs and code, then fix the root cause. Requirements Strong Python skills and a solid background in backend development. Familiarity with API design, cloud infrastructure, storage solutions and common system design patterns. Solid test design and security fundamentals. Careful, detail-oriented approach when ...

Development & Technical Manager

Location
Aberdeen City, Scotland, United Kingdom
based platforms. Strong understanding of cloud platforms (Azure preferred; AWS or GCP acceptable). Experience with modern web technologies and frameworks. Solid understanding of API design, integration patterns, and modern authentication standards (OAuth2, OpenID Connect, JWT). Experience with CI/CD pipelines, Git‐based workflows, and automated … publicly listed on the TSX (CSU.TO), and a member of the S&P/TSX 60 Index. IS THIS YOU? About us: C-SAM design and implement industry-leading asset tracking software that improves business performance, boost customer service, and drives change that impacts directly on the balance sheet. ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
This will be an initial 6 month contract (inside IR35) and working predominantly remotely with occasional travel to sites. Position Overview To lead the design and development of modernised Python microservices deployed into Kubernetes, rebuilding existing network data services to be efficient, secure and scalable while guiding the team … engineering best practice. What you'll be doing: Design and develop Python microservices to replace and modernise existing services, preserving known functionality while improving performance and security. Provide technical guidance to the team on service design, code quality and secure development practices. Build highly concurrent services capable ...

Development & Technical Manager

Location
Aberdeen City, Scotland, United Kingdom
based platforms.* Strong understanding of cloud platforms (Azure preferred; AWS or GCP acceptable).* Experience with modern web technologies and frameworks.* Solid understanding of API design, integration patterns, and modern authentication standards (OAuth2, OpenID Connect, JWT).* Experience with CI/CD pipelines, Git-based workflows, and automated ...

AWS Cloud Engineer

Hiring Organisation
Anson Mccade
Location
London, United Kingdom
Employment Type
Permanent, Part Time, Work From Home
Salary
£70,000
SAFe. Excellent communication, collaboration and problem-solving skills. Desirable experience: AWS Associate-level certification, such as Solutions Architect, Developer or DevOps. Microservices architecture and API design. Docker and containerisation technologies, including Kubernetes, EKS or ECS. AWS operational concepts, particularly monitoring, observability and FinOps. CI/CD tools such ...

AWS Cloud Engineer

Hiring Organisation
Anson Mccade
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Part Time, Work From Home
Salary
£70,000
SAFe. Excellent communication, collaboration and problem-solving skills. Desirable experience: AWS Associate-level certification, such as Solutions Architect, Developer or DevOps. Microservices architecture and API design. Docker and containerisation technologies, including Kubernetes, EKS or ECS. AWS operational concepts, particularly monitoring, observability and FinOps. CI/CD tools such ...

Java Full Stack Developer

Location
Greater London, England, United Kingdom
Spring Cloud, and related ecosystem technologies. Experience developing modern user interfaces using React and/or Angular . Deep understanding of Microservices Architecture , including design, development, deployment, and support of distributed systems. Experience with Cloud-Native Development principles and cloud platforms (AWS, Azure, and/or Google Cloud Platform … . Strong knowledge of API design , system integration, and event-driven architectures. Experience in Performance Engineering , application optimization, monitoring, troubleshooting, and capacity planning. This client will only accept workers operating via a PAYE engagement model. AMS’s payroll service is in partnership with Giant, we have worked with ...

FULL-STACK DEVELOPER

Location
Greater London, England, United Kingdom
search, price optimization) into user workflows Create admin dashboards for analytics, compliance tracking, and supplier management Implement secure payment systems and escrow functionality Develop API integrations with third-party services (payment, compliance verification) Optimize platform performance and user experience Collaborate with CTO on architecture and technical decisions What … 3+ years full-stack development experience Strong PHP skills with WordPress/WooCommerce development experience Frontend proficiency with JavaScript, React, or modern frameworks Database design and optimization (MySQL/PostgreSQL) RESTful API design and integration experience Understanding of secure coding practices and GDPR compliance Ability to work ...

Full Stack Java Developer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
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 our client … 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 principals Hands-on developing/coding role ...

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

Hiring Organisation
TD SYNNEX
Location
Liverpool, UK
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 Director, Performance Engineering -Infrastructure and Reliability

Location
United Kingdom
infrastructure, databases, and the delivery pipeline perform at levels that meet customer expectations, enable rapid iteration, and drive cost efficiency. This spans frontend performance, API latency, backend throughput, database query optimization, container orchestration efficiency, CDN strategy, agentic AI inference performance, and real user monitoring across all product lines. This … standards and SLOs (Service Level Objectives) for latency, throughput, availability and cost across all services, APIs and customer-facing systems. Define performance architecture patterns, design principles and guardrails that make performant choices the easy choices for engineering teams. Own performance roadmap: prioritize performance initiatives, set timelines, and communicate progress ...