51 to 75 of 190 API Design Jobs in England

Software Engineer

Hiring Organisation
Sanderson Government and Defence
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent
Java, Python, React , and MongoDB to join a high-performing engineering team . You will work across the full development lifecycle, contributing to the design, build, and delivery of high-quality software solutions. The role requires strong technical expertise, proactive problem-solving, and the ability to collaborate effectively … multidisciplinary teams. Key Responsibilities Design, develop, test, and deploy high-quality software solutions using Java , Python , React , and MongoDB . Participate in solution design, estimation, and technical decision-making. Develop reusable components and shared services. Work within Agile teams to support sprint planning, refinement, and retrospectives. Ensure code ...

Senior Python Developer

Hiring Organisation
Spencer Rose Ltd
Location
Watford, Hertfordshire, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 75,000 Annual
occasional out-of-hours support. Ensure unit tests are implemented and fit for purpose. Research and evaluate new technologies that could benefit the organisation. Design and develop high-quality Python software that meets complex business needs. Ensure code, documentation, and testing align with engineering standards. Deliver solutions that meet … expectations, and operational reliability. Integrate products with monitoring and support tooling. Experience/Skills required: Experienced Senior Engineer who can make sound trade-offs, design for scale, and contribute to complex systems without over-engineering. Strong engineering judgement and real-world delivery experience. Senior-level experience designing and building ...

Product Management - Private markets, Charles River Development, Assistant Vice President

Hiring Organisation
State Street
Location
Greater London, United Kingdom
Employment Type
Full Time
deliver the roadmap for horizontal platform capabilities serving all private markets asset classes - including core data services, cross-fund analytics, workflow automation, and API infrastructure. Lead initiatives in AI/ML-enabled product features, including document extraction (e.g., fund documents, LP agreements, investment memos), NLP-powered search, and intelligent … reporting cycles. Demonstrated experience owning platform-level or infrastructure product workstreams with high technical complexity. Familiarity with data architecture concepts: data modeling, ETL pipelines, API design, and event-driven systems. Experience with agile development methodologies; strong proficiency with product management tools (Jira, Confluence, Productboard, or similar). Exceptional ...

Senior Full Stack Engineer, Product & Infrastructure

Hiring Organisation
ScienceMachine
Location
Greater London, England, United Kingdom
product and infrastructure development. This is a broad, hands-on engineering role for someone who is comfortable moving between user-facing product work, backend API design, database modelling, cloud infrastructure, Kubernetes workloads, and deployment pipelines. You will work close to the core product: building interfaces scientists use every … platform as it moves from pilots into production customer environments. ## What you'll do - Build product features across React, Next.js, and TypeScript. - Design, build, and maintain backend Python backend services and APIs. - Own PostgreSQL database design, data modelling, schema migrations, and query performance. - Build and maintain infrastructure ...

Solution Architect

Hiring Organisation
scrumconnect ltd
Location
Taunton, Somerset, United Kingdom
Employment Type
Permanent
Salary
GBP 80,000 - 90,000 Annual
solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. We are passionate about user-centred design, agile delivery, and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver … solutions align with client architectural principles, reference architecture, and approved integration patterns. Act as the primary technical authority between delivery teams and client Technical Design Authority (TDA). KEY RESPONSIBILITIES Define and govern solution architecture across cloud, data centre, and hybrid work packages in line with UKHO architecture principles ...

Java Software Engineer

Hiring Organisation
Information Tech Consultants
Location
England, United Kingdom
agile squad, responsible for the end-to-end delivery of scalable web applications. What You’ll Do (Responsibilities) End-to-End Development: Design and develop high-volume, low-latency applications for mission-critical systems. Back-End Excellence: Write clean, maintainable code using Java and the Spring Boot ecosystem. Front … Innovation: Build responsive, user-friendly UI components using React, Angular, or Vue.js . Database Management: Design and optimize schemas for relational ( PostgreSQL/MySQL ) and NoSQL databases. API Design: Build and consume secure RESTful APIs to integrate with internal and third-party services. Collaboration: Participate in code ...

Senior Python Engineer (Django / DevOps / IaC)

Hiring Organisation
Pontoon
Location
Welwyn Garden City, Hertfordshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
£850 per day
cloud-native systems across the business by making security tooling fast, reliable, and seamless for every development team. You will be responsible for Design, develop, and maintain scalable REST APIs using Django. Build and operate asynchronous task pipelines (Celery/Redis) that orchestrate security scanning at scale. Ensure best … practices for code quality, performance, and security. Integrate robust security practices into all API layers, including authentication, authorisation, data validation, and protection against vulnerabilities. Develop and manage CI/CD pipelines for automated testing, deployment, and monitoring. Work closely with core devops teams or independently handle infrastructure and deployment ...

Senior Python Engineer (Django / DevOps / IaC)

Hiring Organisation
Pontoon
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£850 per day
cloud-native systems across the business by making security tooling fast, reliable, and seamless for every development team. You will be responsible for Design, develop, and maintain scalable REST APIs using Django. Build and operate asynchronous task pipelines (Celery/Redis) that orchestrate security scanning at scale. Ensure best … practices for code quality, performance, and security. Integrate robust security practices into all API layers, including authentication, authorisation, data validation, and protection against vulnerabilities. Develop and manage CI/CD pipelines for automated testing, deployment, and monitoring. Work closely with core devops teams or independently handle infrastructure and deployment ...

Enterprise Solutions Architect – Fixed-Term Contract (12 Months)

Hiring Organisation
Jobleads-UK
Location
Oxford, England, United Kingdom
lineage and enabling self‐service analytics safely Enterprise SaaS integration across domains with Salesforce CRM, Dynamics 365 F&O & SAP Success Factors Strong integration design capability: Domain Driven Design, event‐based integration, API design principles, resilience patterns, operational considerations (SLAs, observability, incident readiness) Excellent stakeholder management ...

Principal Artificial Intelligence (AI) Platform Engineer/Architect

Hiring Organisation
WTW
Location
Greater London, United Kingdom
Employment Type
Full Time
their development workflows safely and seamlessly. Acting as both architect and hands-on builder, you will articulate our vision for AI-accelerated development practices, design platforms that embed AI at every phase of the SDLC, and champion adoption across our organization. We are seeking a highly skilled engineer … model) The Role Define and evolve the vision for AI-enabled SDLC practices, translating business and technical strategy into concrete platform capabilities and processes Design and implement scalable AI platform infrastructure (SDKs, frameworks, deployment pipelines) that enables rapid, safe integration of AI into all phases of development—from coding ...

Product Director, Molecule Design Products

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
assets, ontology, Knowledge Graph/semantic search, data/computing/analysis platforms, and data-powered applications. We are seeking an experienced Director, Molecule Design Products who will be accountable for designing and delivering the roadmap for molecule design products to support GSK Research and Development. This role … will be pivotal in ensuring a cohesive enterprise level strategy towards molecule design solutions and will ensure our scientists have access to best-in-class technology products to improve research productivity and ultimately deliver new medicines for our patients. As the Product Director for Molecule Design Products ...

Java Technical Lead - London, Wembley

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Permanent
Salary
£75000 - £80000/annum + Benefits
just familiarity, but production ownership. Azure Integration: Proven experience building applications that consume Azure-native services, including Azure Key Vault for secrets, Azure Storage API, and Azure Service Bus for event-driven messaging. DevOps Mindset: Solid understanding of the full CI/CD lifecycle; comfortable reading and contributing … Dockerfiles and GitHub Actions YAML workflows - not as a DevOps engineer, but as a developer who understands the pipeline their code flows through. API Mastery: Deep expertise in RESTful API design principles, OAuth2 authentication flows (including FusionAuth integration), and DMARC-compliant transactional email logic via SendGrid. Duties ...

Lead Modernization Engineer Java / Node.js - London, Wembley

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Permanent
Salary
£75000 - £80000/annum + Benefits
just familiarity, but production ownership. Azure Integration: Proven experience building applications that consume Azure-native services, including Azure Key Vault for secrets, Azure Storage API, and Azure Service Bus for event-driven messaging. DevOps Mindset: Solid understanding of the full CI/CD lifecycle; comfortable reading and contributing … Dockerfiles and GitHub Actions YAML workflows - not as a DevOps engineer, but as a developer who understands the pipeline their code flows through. API Mastery: Deep expertise in RESTful API design principles, OAuth2 authentication flows (including FusionAuth integration), and DMARC-compliant transactional email logic via SendGrid. Duties ...

Technical Architect

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
digital or enterprise environments. Strong software engineering foundation, with practical knowledge of modern application architectures (e.g., microservices, APIs, distributed systems). Proven ability to design and document architectures using visual modeling techniques such as C4, UML, and data flow diagrams. Hands‐on experience with at least one major cloud … provider, ideally AWS, including Infrastructure as Code, platform services, networking, and security controls. Deep understanding of secure and resilient system design, including authentication patterns, threat modeling, performance considerations, and observability. Familiarity with Ruby, Python, or Java, and modern development practices such as CI/CD, TDD, and containerization. Experience ...

Integration Developer FTC

Hiring Organisation
itecopeople
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£60,000
using modern cloud-native and streaming technologies. Key Responsibilities Develop event-driven integrations and backend services Build connectors, event-processing services, and data pipelines Design scalable integration patterns, schemas, and event flows Develop CDC pipelines and resilient messaging solutions Improve observability through logging, metrics, and tracing Deploy containerised services … Grafana Required Skills Strong software engineering background Experience building integration or event-driven platforms Kafka, Redpanda, or similar streaming technologies Enterprise system integrations and API design Agile development experience Strong communication and collaboration skills Desirable Skills Go and/or Python CDC pipeline development Azure cloud experience Observability ...

Senior Technical Lead

Hiring Organisation
Nextech Group Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
into a repeatable process. What you'll do Phase 1 (0-3 months): Lead the greenfield implementation of all core platforms. Build foundational REST API integrations and webhook-driven automations. Define the cross-platform data model - canonical field mapping, entity relationships and data quality standards across … automations in JavaScript and Python - ticket routing, billing triggers, licence lifecycle, CRM sequences, alert-to-action logic. Build and maintain Azure middleware (Logic Apps, API Management, Service Bus) as IaC via Terraform through a CI/CD pipeline. Iterate the acquisition onboarding playbook. What we're looking for * 5+ ...

Full Stack Engineer

Hiring Organisation
Cervus
Location
Greater Bristol Area, United Kingdom
Engineer to help us scale our data and analytics capabilities across the UK and international markets. In this role, you will contribute to the design, development and maintenance of the data pipelines, platforms and services that power Cervus’ analytics. Working closely with experienced engineers, analysts, and delivery teams … defence. You will also be encouraged to leverage modern AI tools to accelerate high quality, sustainable development. As a Full Stack Engineer, you will: • Design, develop, automatically test and maintain full-stack web applications with a focus on data pipelines, analytics dashboards, and reporting tools. • Build scalable RESTful APIs ...

Mid-Level Backend Engineer (50010)

Hiring Organisation
Jobleads-UK
Location
Basingstoke, England, United Kingdom
that meet our clients’ needs. You will collaborate with cross-functional teams to deliver innovative products that drive business success. Core Responsibilities Software Development: Design, develop, test and deploy software applications and features using industry best practices and coding standards. Write clean, efficient, and maintainable code that meets functional … performance requirements. Technical Design: Collaborate with product managers, designers, and fellow engineers to translate business requirements into technical designs and architecture. Participate in architectural discussions, propose solutions, and make recommendations for system improvements. Problem Solving: Analyze complex technical problems and propose creative solutions. Troubleshoot issues, debug code, and implement ...

AI Platform/ DevOps Engineer

Hiring Organisation
The Portfolio Group
Location
City of London, London, Castle Baynard, United Kingdom
Employment Type
Permanent
Salary
£70000 - £80000/annum + Benefits
secure, and cost-efficient platform infrastructure that enables AI engineering teams to ship and operate AI products reliably in production. What you'll do Design, build, and operate cloud-native AI platform infrastructure across AWS (Lambda, API Gateway, DynamoDB, S3, CloudWatch) and Databricks Deploy and operate containerised services … workflows, and RAG components Implement observability across AI workloads using CloudWatch, MLflow, and OpenTelemetry - covering latency, throughput, cost, and system health Apply secure-by-design principles including IAM, encryption, network controls, and audit logging Work closely with AI engineers to translate prototypes and proof-of-concepts into production-ready ...

Technical Product Manager

Hiring Organisation
WTW
Location
Surrey, United Kingdom
Employment Type
Full Time
vision. Highly Desirable: • Background in Software development, data science, or data engineering. • Exposure to cloud platforms (e.g., AWS, Azure, GCP). • Understanding of API design, microservices architecture, or event-driven systems. • Experience in B2B enterprise software environments with complex stakeholder landscapes. • Product management certification (e.g., CSPO, Pragmatic Institute ...

Enterprise Solution Architect

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
drive revenue growth. You will be the technical lead for our Enterprise deals, working closely with the Solutions Engineering team to understand their requirements, design solutions, and oversee detailed technical validation. You will collaborate with cross-functional teams, including Sales, Product, Engineering, and Customer Success, to ensure our clients … stacks and identify technical blockers. Collaborate with account teams to prove technical feasibility and eliminate risk. Provide expert guidance on Vanta’s platform and API capabilities, best practices, and integration strategies. Design comprehensive Technical Success Plans that map Vanta’s platform to complex customer architectures. ...

Python Developer

Hiring Organisation
Sanderson
Location
London Area, United Kingdom
platform, responsible for the core services, APIs, and distributed processing backbone. This role requires a deep understanding of Python internals, Django architecture, and scalable API design, with a particular emphasis on multithreading, concurrency, and performance tuning. Key Responsibilities Lead the design and development of backend services using … including the Global Interpreter Lock (GIL), multithreading, multiprocessing, and asyncio Strong grasp of type hinting, generators, iterators, and Pythonic loop constructs Proven ability to design RESTful APIs for high-throughput, low-latency systems Experience with unit testing, integration testing, and test automation frameworks Solid understanding of PostgreSQL, Redis ...

Principal Technical Lead

Hiring Organisation
RSSB
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
delivery of the platform, ensuring the team consistently ships high-quality, production-ready increments. Ensure engineering standards are followed across the team: coding conventions, API design, security practices, and code review processes. Lead estimation, sprint planning, and decomposition of technical work; proactively identify and manage technical risk, dependencies … architecture function, clearly articulating technical constraints, risks, or emerging complexity with architectural implications, supported by evidence and proposed alternatives. Ensure application of secure-by-design principles and validate and refine Figma wireframes. Represent the team's technical work clearly and credibly to non-technical audiences. Define and enforce ...

Senior Software Engineer [Rust]

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
demands of our customers, and expand our ecosystem to open up new possibilities. Guided by our Engineering Principles , you’ll collaborate on the design, implementation, delivery and operation of our products — in short: you’ll build it, you’ll run it! In addition to working with modern development frameworks … want to continuously iterate and improve our offering without compromising the stability or long-term maintainability of our systems. We serve millions of API requests with a 99.5% availability SLA. Our platform must remain a reliable foundation that our customers can build upon as we expand (new products ...

Senior Product Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
rather than hours. You ship these without needing to be guided step by step. You're not a specialist who hands off at the API boundary. You think in user outcomes and delivery units, and you're reliable: your code handles edge cases, your APIs have clean contracts … across the stack — ship workable React/TypeScript frontend for product features; not a frontend specialist, but comfortable and pragmatic Collaborate with product and design — translate ambiguous requirements into concrete shipped work; be the engineer who unblocks, not the one who waits Maintain quality at speed — handle data integrity ...