151 to 167 of 167 Permanent API Development Jobs

Senior Applied AI Engineer - London - £150-190k

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£150,000 - £190,000 per annum
build AI-native applications leveraging LLMs, agents and multimodal AI frameworks. Develop and orchestrate agentic workflows using the Gemini Enterprise Agent Platform, Agent Development Kit (ADK) and Agent2Agent (A2A) protocol. Design and implement Retrieval Augmented Generation (RAG) architectures, Vector Search solutions and agent memory management. Deploy and manage … experience with Large Language Models, AI agents and modern orchestration frameworks. Experience working with Google Cloud AI technologies, particularly Gemini-based solutions. Strong Python development skills, with TypeScript experience highly desirable. Full stack development experience, with a particular strength in backend engineering and API development. Experience building ...

Software Engineer, Platform

Hiring Organisation
Scale AI
Location
London, United Kingdom
Salary
£ 80 K
high-growth startups.Familiarity with LLMs, vector databases, embeddings, or other modern AI tooling (tinkering or production experience welcome).Proficiency with SQL and modern API development.Experience with Kubernetes, containerization, and microservice architectures.Experience working with at least one major cloud provider (AWS, GCP, or Azure).PLEASE NOTE: Our policy requires … Time Inc., the Government of Qatar, and U.S. government agencies including the Army and Air Force. We are expanding our team to accelerate the development of AI applications.We believe that everyone should be able to bring their whole selves to work, which is why we are proud ...

Software Engineer

Hiring Organisation
RedCat Digital
Location
Manchester, Greater Manchester, United Kingdom
Salary
£ 50 K
using the latest technologies.As a Software Engineer, you’ll be a key player in shaping the future of banking. You’ll lead the design, development, and maintenance of quality practices while collaborating with other engineers, architects, and stakeholders to understand the objectives, goals, and requirements of the projects … working on.Key Responsibilities:Design and development of software that delivers a positive customer experienceCreate and maintain high-quality software using Python as your primary languageOptimize our software engineering capability and new technologiesFollow best engineering practices such as TDD, BDD, Pair-programmingMentor and collaborate with other engineers to deliver resultsQualifications ...

Java Software Engineer

Hiring Organisation
Leidos
Location
Aldershot, Hampshire, United Kingdom
Salary
£ 80 K
most important pieces of critical national infrastructure.What will I be doing Develop, debug, test, document, and deploy software enhancements aligned with the Software Development Strategy.Design and implement modern single‐page applications using React and TypeScript.Consume and integrate with REST APIs, maintaining clean separation from backend and legacy systems.Support delivery … design UI solutions based on user needs and system constraints.Produce clear technical documentation and maintain readable, well‐structured code.Participate fully in the Agile software development lifecycle.Use tooling such as Bitbucket, Jira, Jenkins, and Confluence to manage code, work items, and builds.Write and maintain unit and integration tests as part ...

Software Engineer

Hiring Organisation
Raytheon
Location
Gloucester, Gloucestershire, United Kingdom
Salary
£ 60 K
make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect … continuous improvement within your teamCollaborate with your peers on technical direction within your teamDesired Skills and ExperienceCore Software EngineeringJavaScript frameworks (React, NextJS)TypeScriptPythonJavaREST API developmentOpenAPI/SwaggerCloud & InfrastructureCloud services (AWS or Azure)Containerisation & Orchestration (Docker, Kubernetes, OpenShift)Infrastructure as Code (Terraform, Ansible)Data & Search TechnologiesRelational Databases (e.g. PostgreSQL)Elasticsearch ...

Core AI Engineer

Hiring Organisation
London Stock Exchange Group
Location
London, United Kingdom
Salary
£ 80 K
embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives. We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision … automate operational workflows, accelerate engineering productivity and enhance customer outcomes.As a Core AI Engineer, you will play a leading technical role in the design, development and deployment of AI solutions across the organisation. You will combine software engineering, machine learning and AI platform expertise to turn innovative concepts into ...

Lead Architect - Information Architect - Vice President

Hiring Organisation
JP Morgan Chase
Location
London, United Kingdom
Salary
£ 100 K
collaborate with Corporate Investment Bank Technology, Global Technology, and other Lines of Business to develop contemporary and innovative engineering methods.Job responsibilitiesActively engage with development teams to use, develop, and improve Information Architecture standards, tools, and processes as part of the development process.Provides feedback and proposes improvements to architecture … Architectures and Operating Models.Adds to team culture of diversity, opportunity, inclusion, and respect.Required qualifications, capabilities, and skillsHands-on practical experience delivering system design, application development, testing, and operational stabilitySoftware Engineering experience in a data-centric role with exposure to how data is stored, moved, governed, and/or validated ...

Senior Software Engineer

Hiring Organisation
Light & Wonder
Location
London, United Kingdom
Salary
£ 80 K
application and the go to engineer for design, stability, and technical direction.Understand the system end to end: Gain deep understanding of the flow from API through state machine, game engine execution, wallet calls, and data persistence.Maintain the platform: Diagnose and fix bugs, update dependencies, manage technical debt, and keep … jurisdictional rules.QualificationsPythonStrong professional experience with Python (recent 3.x versions)Comfortable working in large, long‐lived codebasesExperience with object‐oriented design, classes, and mixinsWeb/API DevelopmentExperience with a Python web framework such as Pyramid, Django, Flask, or similarBuilding and maintaining REST or GraphQL APIsDatabasesStrong SQL skills and experience with ...

Mobile Engineer

Hiring Organisation
Teya Solutions
Location
London, United Kingdom
Salary
£ 80 K
will:Develop cross-platform mobile applications using Kotlin.Write clean, maintainable, and secure code to address complex business problems.Prioritize performance, scalability, and maintainability in all development tasks.Seamlessly integrate various APIs and SDKs, ensuring reliability and efficiency.Focus on delivering a modern, intuitive, and user-friendly experience for merchants across Europe.Collaborate with … meet industry standardsYour Story:Essential RequirementsKotlin Multiplatform Experience: Hands-on experience developing and shipping KMP projects, including shared business logic and platform-specific implementationsMobile Development: Strong background in either Android (Kotlin) or iOS development with understanding of mobile app architecture patternsSDK Development: Experience building SDKs, libraries ...

Software Developer- C# API- Tonbridge

Hiring Organisation
Quant Capital
Location
London, United Kingdom
Salary
£ 80 K
C# API Developer65,000 Plus BonusHome work and flex work encouragedQuant Capital is urgently looking for a C# .NET Developer to join our high profile client.Our client is the world leader in Market data management systems, with clients globally such as most of the major investment banks. Their team … technical skills as well as excellent communications skills and offer the latest technology in a cutting edge market.My client is based in Tonbridge WellsC# API, ES6, React, Redux, ASP.NET, WebAPI, C# Developer ...

ServiceNow Technical Architect

Hiring Organisation
Anson McCade
Location
Manchester, Greater Manchester, United Kingdom
Salary
£ 60 K
maintain efficient delivery pipelines and deployment processesWork with integrations and third-party systems to deliver connected solutionsEnsure quality through testing, code reviews and development standardsCollaborate with cross-functional teams in an agile environmentContribute to platform performance, governance, and continuous improvementAbout the CandidateThe right ServiceNow Technical Architect should have:Experience … delivering ServiceNow implementations (ideally 3+ end-to-end projects)Strong hands-on experience with ServiceNow development and scripting (JavaScript)Exposure to multiple modules such as ITSM, ITOM, HRSD, CSM or similarExperience working with integrations (REST/SOAP APIs) and external systemsUnderstanding of modern ServiceNow architecture and platform capabilitiesExperience working ...

Backend Engineer Node.js + AWS

Hiring Organisation
Deel
Location
United Kingdom
Salary
£ 70 K
professionals to create seamless experiences.Participate in Product Planning: From discovery to deployment, we value your input throughout all stages of the Software Development Lifecycle Develop and Enhance Features: Collaborate to develop robust new features, APIs, and continuously improve our industry-leading products. Help find and fix bugs at "Deel … Experience: Ensure top-tier products and services through quality engineering and attentive, customer-focused development.What you’ll bring to the Team:Expertise in Backend Development: Strong proficiency in Node.js, TypeScript/JavaScript best practices, along with experience in at least one other server-side language.Database Mastery ...

Front-End Developer

Hiring Organisation
Catchfish
Location
Orpington, Kent, United Kingdom
Salary
£ 45 K
position for you! The front-end team is responsible for the delivery of the product.As the Front-End Developer you will be responsible for:API developmentProduct troubleshooting and testingCustomer workflow and user journeysFeature development as well as data visualisationThe successful Front-End Developer will have the following abilities ...

Sr Software Engineer

Hiring Organisation
Pendo
Location
Sheffield, South Yorkshire, United Kingdom
Salary
£ 70 K
usage data to guide iteration. You will not just close tickets; you will measure whether the work is creating the intended customer impact.AI-enabled development: Use AI coding tools such as Cursor and Claude Code as a core part of your daily workflow. You will apply strong engineering judgment … usage data.Experience engaging directly with customers or end users to validate problems and assess impact after launch.Strong grasp of software architecture, design principles, and API development.Clear communication skills and the ability to mentor others, unblock teammates, and support the growth of the engineering team.Nice-to-havesExperience working ...

Product Manager – Global Card Issuing Platform (BaaS)

Hiring Organisation
WorldFirst
Location
London, United Kingdom
Salary
£ 80 K
grade infrastructure that allows clients to launch card programs anywhere in the world through a single integration.You will be responsible for a unified Global API and SDK suite that abstracts the complexity of regional payment networks. Whether a client is launching in Europe, North America, or APAC, your product … will provide a consistent, white-label experience. You will drive both the technical "how" (API/SDK design) and the strategic "where" (global expansion and regional issuing setups).What you’ll do:Unified Global API Strategy: Design and maintain a single, polymorphic API architecture that supports card ...

Principal Consultant-Oracle EBS Core HR / Payroll Techno Functional-UK

Hiring Organisation
Infosys Technologies
Location
London, United Kingdom
Salary
£ 80 K
Formulas, Custom Forms, Performance Tuning.Lead customer discussions pertaining to integrations, data migrations, and reports related to Core HR, Payroll and other relevant modules Guide development teams on customization (OAF, PL/SQL), integration (API, SOA Suite), and data migration (HDL, Web ADI).Ensure system design complies with data … particularly in the UK Public Sector.Candidate should be proficient in all the Core HR, UK Payroll.Proficiency in Oracle SOA Suite, Integration Cloud (OIC), and API developmentKnowledgeable on HCM technical tools including HCM Data loader (HDL), HCM Extract, BI reporting, Fast Formulae, Custom Forms, Performance Tuning, Oracle PL/ ...

Business Systems Architect

Hiring Organisation
Proactive Appointments
Location
Truro, Cornwall, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £60,000 per annum
company's ERP platform (IFS Cloud). Design and deliver scalable system architecture that supports future business growth. Develop and maintain secure API integrations between internal systems, legacy applications and third-party platforms. Enhance existing business platforms, creating standardised and efficient business processes. Own the organisation's systems architecture … disaster recovery requirements Experience required: Enterprise ERP platforms (IFS Cloud experience would be highly advantageous, although not essential) Systems architecture and enterprise integration API design and development EDI solutions SQL experience Cloud technologies Digital transformation programmes AI, automation or emerging technologies Business process improvement Due to the volume ...