151 to 175 of 278 API Design Jobs

Senior Backend Platform Developer, Contact Center Systems

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Backend Platform Developer to build modern services for the company's contact center systems. This is a software engineering role first: where you will design APIs, serverless services, data flows, observability tooling, and AI-enabled workflows that support our customer and agent experience. The contact center is the domain … platforms, and using AI-assisted engineering tools to move quickly without sacrificing quality. What You'll Do: Production-grade Node.js services on AWS Lambda, API Gateway, and event-driven serverless patterns. Secure APIs and integrations across internal systems, customer data, and third-party platforms. Technical patterns, implementation standards ...

Principal Software Engineer

Hiring Organisation
Searchability (UK) Ltd
Location
Liverpool, Merseyside, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
platform and influence engineering strategy Work within a senior, AI-first engineering environment KEY POINTS Principal-level position with significant technical ownership Leading the design and development of a modern platform rebuild Strong focus on Node.js, TypeScript, React and cloud technologies Opportunity to shape engineering standards, architecture … role where you'll help shape the future of a modern, large-scale platform whilst remaining hands-on with development. You'll lead the design and delivery of scalable backend services, APIs, integrations and data flows, whilst providing architectural guidance across the wider engineering team. Although the role ...

Senior Python Developer - Agentic AI Systems

Hiring Organisation
Jobleads-UK
Location
Manchester, England, United Kingdom
customer-facing solutions. The Role This role focuses on building autonomous, reasoning-driven AI systems. We are not looking for someone to build simple API wrappers. You will take complete ownership of designing and deploying sophisticated agentic architectures that drive real value for the business. Core Stack Python: Expert … level AI Frameworks: LangChain, CrewAI, AutoGPT-style frameworks Vector Databases: Pinecone, Milvus, Weaviate Architecture: LLM orchestration and tool-calling pipelines API Design: REST and GraphQL What Sets This Role Apart Deep Reasoning: Deep understanding of LLM reasoning loops. Self-Correction: Building self-correcting agent architectures. Scale: Prompt engineering ...

Lead Engineer, Risk Technology

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
clean, maintainable, performant applications; promote best practices, and collaborate closely with our quantitative and product teams. What You’ll Do High-Performance JVM Engineering: Design and build high-quality, scalable and performant low/zero-GC JVM services and APIs Technical Translation & Risk Modeling: Understand risk models & decompose complex … experience in architecting highly performant, low-latency systems. Testing Methodologies: In-depth knowledge of testing methodologies, including TDD, back testing and stress testing Software Design Excellence: Well versed in Agile methodologies, DRY, Clean Code, API design and micro-services. Technical Ecosystem: Experience in a full range ...

Golang Technical Lead

Hiring Organisation
Gazelle Global Consulting Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract
Join a high-profile transformation programme as a Technical Lead, taking ownership of the design, development and delivery of enterprise-scale cloud-native applications. This is an excellent opportunity to combine hands-on engineering with technical leadership, working across Agile teams to deliver scalable, resilient solutions. Excellent Day Rate … working closely with architects and business stakeholders to deliver modern cloud-native platforms. Key Skills Golang development Microservices architecture Azure Cloud Distributed Systems REST API design Document Databases & NoSQL Solution architecture and technical governance Agile technical leadership Kubernetes (AKS) CI/CD and DevOps practices For more information ...

Software Development Engineer III

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
technical leadership by designing shared GenAI capabilities, supporting live systems and raising engineering and AI delivery standards across the team through mentoring and rigorous design practice. Data & AI Product Development: Take ideas from discovery through rapid prototypes to production grade solutions that combine data, user facing applications and backend … services. Work closely with product managers, designers, data science and engineering teams to translate business needs into well designed technical solutions. Design and deliver LLM based applications and AI agents that enable intelligent decision making and automation, applying pragmatic engineering patterns and appropriate guardrails. Design and consume APIs ...

Software Developer - AIO (Typescript)

Hiring Organisation
Jobleads-UK
Location
United Kingdom
build the next generation of AI e-commerce platforms. What you will be responsible for Driving technical decision-making, including technology selection, architecture design, and system scalability Designing and implementing high-quality features across the backend and frontend stack Identifying and addressing performance bottlenecks in critical areas … professional software development experience, with strong expertise in TypeScript Proven experience building and maintaining production-grade web applications Strong backend engineering experience, including API design, system architecture, and distributed systems concepts Solid understanding of relational databases and advanced SQL Strong focus on software quality, testing, security, and maintainability ...

Senior ML Software Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
reliable, and low‐latency ML solutions. In addition to technical expertise, this job requires strong collaboration skills. What you’ll own Feature Development & Delivery: Design, implement, and deploy new features and enhancements to ML products, collaborating with Product and ML Research teams to refine requirements. Technical Ownership and Stewardship … years as an ML‐focused software engineer, ML Engineer, MLOps Engineer, or similar, with hands‐on production experience Proven expertise with ML model deployment, API design, and integration into production environments Strong Python programming and relevant ML/data libraries Experience with containerization, orchestration, and AWS cloud services ...

Senior Backend Software Engineer, Python

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
professional experience in backend software development primarily using Python Strong experience with Python web frameworks such as Django or Flask Proficient with RESTful API design and implementation Experience with database systems (SQL and NoSQL) Familiarity with containerization technologies like Docker and orchestration tools Experience working with cloud platforms ...

Contract AI Software Engineer - DV Cleared

Hiring Organisation
Searchability NS&D
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£450 - £650 per day
Experience with AWS or Azure Familiarity with Docker and Kubernetes Experience working in secure or highly regulated environments Strong understanding of software architecture and API design IT WOULD BE NICE FOR THE AI SOFTWARE ENGINEER TO HAVE.... Experience with RAG pipelines and vector databases Knowledge of MLOps tooling ...

Contract AI Software Engineer - DV Cleared

Hiring Organisation
NSD
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£450 - £650 per day
Experience with AWS or Azure Familiarity with Docker and Kubernetes Experience working in secure or highly regulated environments Strong understanding of software architecture and API design IT WOULD BE NICE FOR THE AI SOFTWARE ENGINEER TO HAVE. Experience with RAG pipelines and vector databases Knowledge of MLOps tooling ...

Software Engineer (AI)

Hiring Organisation
Searchability NS&D
Location
London Area, United Kingdom
Experience with AWS or Azure Familiarity with Docker and Kubernetes Experience working in secure or highly regulated environments Strong understanding of software architecture and API design IT WOULD BE NICE FOR THE AI SOFTWARE ENGINEER TO HAVE.... • Experience with RAG pipelines and vector databases • Knowledge of MLOps tooling ...

Principal Engineer - Platform & Data

Hiring Organisation
Masabi
Location
United Kingdom
Employment Type
Full Time
Salary
1000 GBP Annually
ability to operate across teams. You'll help shape the technical direction of Masabi's platform while staying close enough to the detail to design, review and deliver meaningful technical work. Working across the engineering organisation, you'll act as a senior technical leader: defining and evolving architecture, guiding … practices Help shape Masabi's data architecture and strategy, including how we structure, store and make use of the data generated across our platform Design and deliver scalable, robust, cost efficient services aligned with platform blueprint Stay hands-on in code and technical delivery, including reviews and targeted contributions ...

Software Engineer, AI (Level determined by experience)

Hiring Organisation
Jobleads-UK
Location
United Kingdom
FedRAMP Moderate Authorized environment. For more information, please visit www.synack.com. We are looking for a Senior Software Engineer (AI), where you'll design and ship AI agents that plan, reason, drive security tooling and surface exploitable vulnerabilities, running autonomously inside sandboxed environments. It's a hands‐on senior role … from ideation through production, including evals, guardrails and monitoring. Improve how our agents work: prompting, tool orchestration, evaluation, and cost. Lead code reviews and design sessions, and help the engineers around you grow. Work closely with our security researchers to translate how they hack into how our agents operate. ...

Development Manager - Digital Platform & API

Hiring Organisation
Morgan McKinley (South West)
Location
Epsom, Surrey, United Kingdom
Employment Type
Permanent
Development Manager - Digital Platform & API Location: Epsom, Surrey (Hybrid - 2 days office/3 days work from home) Position Overview Are you an agile digital delivery specialist looking to shape the future of platform services across a progressive business? We are seeking a Development Manager - Digital Platform & API … high-value transformation projects with continuous operational BAU demands. Key Responsibilities Product Ownership & Strategy: Lead the roadmap, product backlog, and feature prioritization for our API integration layer and a suite of around 20 application platforms, including flagship digital finance tools. Outsourced Delivery & Vendor Management: Direct external software providers ...

Principal Engineer – GPU Driver & System Software

Hiring Organisation
Jobleads-UK
Location
Cambridgeshire and Peterborough, England, United Kingdom
Principal Engineer – GPU Driver & System Software Category Chip Design Location Cambourne Experience More than 8 Years Work Expe. Education Master's Degree Job Description MediaTek Incorporated is a global fabless semiconductor company that enables nearly 2 billion connected devices a year. We are a market leader in developing innovative … gaming, and its Wi‐Fi 6 chipsets are powering the latest networking equipment for faster computing experiences. With market leader position of MediaTek SoC design, MediaTek GPU IP team is committed for industry‐leading, feature rich and PPA competitive GFX IP optimization, customization and development. The GFX IP will ...

AWS Data Engineer

Hiring Organisation
Infoplus Technologies UK Limited
Location
London Area, United Kingdom
Insurance speciality domain experience Cloud & Data Platforms: AWS, Databricks, BigID, Oracle, PostgreSQL, MongoDB Architecture & Modelling: Canonical data models/standards, Sparx EA, Erwin, DWH design, JSON & XSD schema design, Metadata frameworks, Informatica Ref360, Axon, EDC Integration & Processing: ETL/ELT (Informatica), API design, data pipelines, Kafka ...

Machine Learning Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
pipelines using Python and common ML and DL libraries (e.g. Pytorch, Tensorflow) from early conceptualisation to full deployment in scalable production environments Ability to design, deploy and maintain ML solutions on modern frameworks to meet functional business requirements, adhering to software engineering best practices and with exposure to version … control, testing, MLOps, CI/CD and API design Hands on experience in using one of 3 major cloud technologies (AWS, Azure or GCP) in a production environment, as well as ML platforms (AWS Sagemaker, Azure Machine Learning studio) Be a ‘lifelong learner’ and can demonstrate a drive ...

Senior Software Engineer – Data Visualisation & Graphics | London

Hiring Organisation
techstack Recruitment
Location
City of London, London, United Kingdom
working on the underlying systems that make complex visualisations fast, accurate, and scalable. The challenges range from rendering performance and interaction design through to algorithms, graphics, API design, and numerical correctness. What you’ll be doing Designing and building core charting features used by developers around … exceptionally high technical standards High levels of ownership and autonomy Small team, significant impact Opportunity to deepen expertise in performance, graphics, visualisation, and systems design Package Salary up to £200,000 Hybrid working (London) Private healthcare Pension Additional benefits If you’re interested in building the technology behind modern ...

Senior Oracle Technical Consultant – DV cleared

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
clearance for an initial 3 month contract, 2-3 days on site in London per week, paying £550/day outside IR35 – to design, build, and manage integrations across Oracle SaaS modules (ERP, HCM, SCM) using Oracle Integration Cloud (OIC). The ideal candidate combines strong technical integration skills … business requirements with technical delivery. Working knowledge of Oracle PaaS and IaaS is essential to support end‐to‐end cloud integration architectures. Key Responsibilities Design, develop, and deploy integrations across Oracle Fusion ERP, HCM, and SCM modules using Oracle Integration Cloud (OIC). Build and maintain integrations using ...

Senior Software Engineer: Build Scalable, Secure Systems

Hiring Organisation
Jobleads-UK
Location
Wimbledon, England, United Kingdom
software engineer to contribute across the full SDLC with Engineering, DevOps, and Product. You will turn business requirements into robust, secure technical solutions and design scalable, high-performing applications and services. The role requires hands-on TypeScript (React, AWS CDK), API design, and a strong focus ...

Senior Product Engineer - Partner Experience

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
ones.How we work:We're a small team that ships frequently and iterates on real partner feedback. Engineers own features from technical discovery and design through to production support. We work closely with our PM and designer to understand partner needs, and with adjacent teams (API Experience, Account … identity mapping between partner systems and Wise.• The communication layer services between Wise and partners, extending them to handle new case types and workflows.• API design for partner-facing endpoints. We care about consistency, documentation, and making them usable without hand-holding.• Work with FinCrime, Compliance ...

Senior Java Backend Engineer - Leeds-Based

Hiring Organisation
Jobleads-UK
Location
Leeds, England, United Kingdom
distributed video recording systems and advanced reporting/analytics applications. In this role, you will be deeply involved in hands‐on development, architectural design, and cross‐studio collaboration to advance our internal ecosystem. Key Responsibilities Design & Implementation: Architect and develop robust backend solutions to meet the fast‐paced … challenges of global game development. Technical Leadership: Contribute to the team’s software design guidelines, coding standards, and architectural blueprints. Global Collaboration: Partner and collaborate with other Rockstar technology teams across our worldwide studios. Continuous Innovation: Develop a deep understanding of existing systems while researching and adopting new technologies ...

Net Developer

Hiring Organisation
Pontoon
Location
Bromley, London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £750/day
Develop and maintain high-quality software applications using .NET (4.5+/.NET Core) and Python. Collaborate with cross-functional teams to gather requirements and design effective solutions. Provide support to team members and stakeholders to ensure smooth project execution. Liaise with technical and business colleagues to understand functional requirements … deliver solutions that align with business objectives. Utilise your understanding of Web Services (REST, SOAP) to design and document APIs effectively. Work with MS SQL Server, including TSQL, SSIS, SSRS for database management and reporting. Utilise version control tools such as Git/Bitbucket and job scheduling tools like ...

.Net Developer

Hiring Organisation
Pontoon
Location
Bromley, Kent, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £750 per day
Develop and maintain high-quality software applications using .NET (4.5+/.NET Core) and Python. Collaborate with cross-functional teams to gather requirements and design effective solutions. Provide support to team members and stakeholders to ensure smooth project execution. Liaise with technical and business colleagues to understand functional requirements … deliver solutions that align with business objectives. Utilise your understanding of Web Services (REST, SOAP) to design and document APIs effectively. Work with MS SQL Server, including TSQL, SSIS, SSRS for database management and reporting. Utilise version control tools such as Git/Bitbucket and job scheduling tools like ...