26 to 50 of 67 API Integration Jobs in the City of London

Lead Software Engineer

Hiring Organisation
Durlston Partners
Location
City of London, London, United Kingdom
coordinate fleets of autonomous agents – including drones, vehicles, and distributed sensors – in live field environments. The software supports real-time decision-making, robust API integrations, and intuitive user interfaces designed for mission-critical deployment. This is an opportunity to join an elite engineering team from leading AI and defence ...

Founding Full Stack Engineer (Python/TypeScript) – London - £180K plus equity

Hiring Organisation
Halian | Managed Services, Recruitment Agency & Contract Staffing
Location
City of London, London, United Kingdom
high-impact problems (including the ones we haven’t discovered yet) Tech you’ll work with ·Python + TypeScript/Node.js (in equal measure) ·API integrations, ETL, schema validation ·React/TypeScript, Supabase, AWS ·Data quality systems and pipeline tooling ·Whatever the mission requires — we optimise for impact ...

Senior Logistics Coordinator - International Ecommerce

Hiring Organisation
Borderless360
Location
City of London, London, United Kingdom
experience Experience with SaaS platforms or tech-enabled services Data analysis and reporting skills Call center or high-volume customer service background Experience with API integrations or technical troubleshooting Mandarin language skills (desired but not required) Key Competencies Problem-solving mindset: Ability to think critically and resolve complex logistics ...

iOS Developer

Hiring Organisation
YEO Messaging
Location
City of London, London, United Kingdom
Data, and SwiftUI Knowledge of mobile app architecture, MVC/MVVM, and design patterns Familiarity with version control systems such as Git Understanding of API integration, JSON, and third-party libraries Experience writing unit and UI tests to ensure robustness Experience with creating SDK's for deployment across ...

Lead Developer

Hiring Organisation
SR2 | Socially Responsible Recruitment | Certified B Corporation™
Location
City of London, London, United Kingdom
etc.) Has built scalable, reliable, production-grade interfaces Enjoys leading, mentoring and supporting a growing team Works comfortably with design systems, component libraries and API integrations Cares deeply about performance, accessibility and creating standout user experiences Thrives in collaborative, product-focused engineering environments This is a genuinely exciting chance ...

AI Product Manager - Start Up Experience

Hiring Organisation
Lorien
Location
City Of London, England, United Kingdom
Familiarity with tools like Trulens, HumanLoop, PromptLayer, or similar; experience designing QA approaches for GenAI environments. Knowledge of modern AI architectures (RAG pipelines, embeddings, API integrations such as OpenAI, Azure OpenAI, Anthropic). Experience designing and implementing structured test regimes in fast-evolving contexts. Excellent communication and facilitation skills ...

SC Cleared AWS DevOps Engineer

Hiring Organisation
ECS
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£370 - £375 per day
support CI/CD pipelines using GitLab Ensure infrastructure is secure, scalable, and reliable Monitor systems and applications, addressing performance and availability issues Support API integrations and deployments Strong experience with: Terraform AWS GitLab CI/CD pipelines Infrastructure as Code Monitoring and security best practices Unix/Linux ...

Salesforce Developer

Hiring Organisation
Computer Futures
Location
City Of London, England, United Kingdom
Clouds, (SFMC desirable). Strong expertise in Apex classes, triggers, Lightning Web Components (LWC), and Visualforce pages. Hands-on experience with REST and SOAP API integrations. Familiarity with BAU tasks like configuration and flows. Ability to work more independently. What's on Offer? £60,000 - £70,000 per year ...

Full Stack Engineer

Hiring Organisation
Reed Professional Services
Location
City of London, London, United Kingdom
successful candidate will have a proven track record in both front-end and back-end development, with strong skills in Java, Python, and API development. You will be instrumental in building and maintaining scalable, high-quality applications that deliver exceptional user experiences. Day-to-day of the role: Develop … logic. Implement responsive and visually appealing front-end designs using HTML, CSS, JavaScript, and modern frameworks like React, Angular, or Vue. Design and manage API integrations, ensuring seamless data flow between different software components. Work with SQL and NoSQL databases to store and retrieve application data efficiently. Use version ...

Senior Backend Engineer (Telco Integration Lead) Golang

Hiring Organisation
Ventula Consulting Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Senior Backend Engineer (Telco Integration Lead) We are seeking a deeply technical and security-minded Senior Backend Engineer to join a newly-founded, high-impact AI joint venture. Backed by five of the world's leading telecommunications giants, our mission is to restore trust in global voice communication . … seeking a foundational engineer to own our single greatest strategic asset: our unique, privileged access to network-level intelligence via the GSMA CAMARA API standard. This is our right to win, and you will be the engineer responsible for building the bridge to it. You will be the Critical ...

Embedded Principal Engineer

Hiring Organisation
Coforge
Location
City of London, London, United Kingdom
enterprise engineering (AI-driven environments preferred) Expertise in multiple programming languages and tools Hands-on experience with AWS or other cloud platforms Strong API integration knowledge Proven track record delivering high-value products in large organizations Experience deploying data solutions beyond prototypes Airline or logistics domain knowledge ...

Senior AI Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
/quantitative background (Physics, Maths, Engineering, etc.) Solid coding skills and ability to build end-to-end AI solutions Experience creating intelligence components + API integrations B2C exposure — ideally from e-commerce, hospitality, or lifestyle sectors What’s on offer: £130,000 base salary 20% annual bonus A generous ...

Senior Full Stack Engineer (Golang/Typescript/Kubernetes)

Hiring Organisation
Safe Intelligence
Location
City of London, London, United Kingdom
contribute to our mission! Responsibilities : As a Safe Intelligence Full Stack Software Engineer, you will: Engineering of Golang-based backend systems , focusing on API development and integration. Engineering on our TypeScript-based frontend systems , primarily utilizing React to craft intuitive and highly functional user interfaces. Productize and enhance … result/metric aggregations. Collaborate closely with our scientific and technical teams to interface with and containerize our PyTorch-based verification toolkit. Champion an API-first development approach to deliver feature-rich, versioned interfaces that support both our TypeScript user interface and Python-based SDKs. Develop and maintain Infrastructure ...

AI Engineer (Lead)

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
advanced engineering Strong quantitative background (Physics, Maths, Engineering, etc.) Serious coding ability + end-to-end AI solution delivery Experience building intelligence components + API integrations B2C exposure — ideally e-commerce, hospitality, or other consumer-driven sectors What you’ll get: Up to £150,000 base 20% bonus Generous ...

AI Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
personalised wellbeing for millions. What You’ll Do Build end-to-end AI solutions — from modelling to deployment Develop intelligence components + smooth API integrations Work on high-impact, consumer-facing AI features Collaborate with a tech team investing heavily in AI innovation What You Bring 5–6 years ...

Artificial Intelligence Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
STEM/quantitative background (Physics, Maths, Engineering, etc.) Solid coding ability and experience building end-to-end AI solutions Experience with intelligence components and API integrations B2C experience preferred — ideally in e-commerce, hospitality, lifestyle, or other consumer-first sectors What’s on Offer £100k base salary 20% annual ...

Lead AI Engineer

Hiring Organisation
Oliver Bernard
Location
City of London, London, United Kingdom
etc.) Strong hands-on software engineering and coding experience Ability to design, build, and deploy end-to-end AI solutions, including intelligence components and API integrations Experience in B2C environments – ideally in consumer-facing, aspirational sectors such as e-commerce, hospitality, or lifestyle What’s on offer ...

Data Owner

Hiring Organisation
Anson McCade
Location
City of London, London, United Kingdom
managing installed base or renewal data across multiple systems. Strong understanding of data quality, stewardship, and governance principles. Familiarity with NetSuite, SQL databases, and API integrations (OIC, SAP S/4HANA desirable). Ability to work with cross-functional teams and senior stakeholders, understanding regional business nuances. Experience ...

Robotics Engineer

Hiring Organisation
Coforge
Location
City of London, London, United Kingdom
tools ( UiPath , Blue Prism , Automation Anywhere ). Strong programming skills in Python , Java , or .NET . Knowledge of SQL/NoSQL databases and API integrations. Other Skills: Excellent problem-solving and analytical abilities. Strong understanding of SDLC and agile methodologies. Good communication and documentation skills. Preferred Qualifications RPA certifications … UiPath Certified Professional, Blue Prism Developer, etc.). Experience with AI/ML integration and workflow orchestration tools . Familiarity with CI/CD pipelines and cloud platforms . ...

Electronic Data Interchange Developer

Hiring Organisation
TRIA
Location
City of London, London, United Kingdom
electronic data exchange between the business and its partners, supporting operations through robust technical solutions. Key Responsibilities Design, develop, and maintain EDI workflows and API integrations for orders, invoices, and shipments. Collaborate with internal teams and external partners to ensure compliance with EDI and API standards. Monitor … troubleshoot EDI/API transactions, ensuring accuracy and efficiency. Work with ERP and Order Management Systems to support end-to-end business processes. Maintain documentation and stay current with industry standards and best practices. Skills & Experience Strong knowledge of EDI protocols (ANSI X12, EDIFACT) and transport standards (AS2). ...

Senior Frontend Developer

Hiring Organisation
TechNET IT Recruitment Ltd
Location
City of London, London, United Kingdom
accessibility. Ability to clearly document and communicate technical decisions. Experience maintaining or reviewing production systems operating at scale. Nice to Have Familiarity with API design and integration patterns. Understanding of backend systems (PHP, Node.js) and hosting environments (Linux, Nginx). Comfortable using AI-assisted development tools. Knowledge ...

Qualtrics Developer

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £550 per day
Qualtrics platform as part of Toyota Financial Services' Customer Experience Discovery initiative. This role is critical in enabling data driven insights through seamless survey integration, analytics, and reporting. Key Responsibilities Build branded Qualtrics survey themes aligned with Toyota FS identity. Develop dynamic, multi-channel surveys (email, portal intercepts, exit … intent). Implement advanced branching logic and variation frameworks for A/B testing. Configure API connections to CRM systems and Power BI for real-time dashboards. Ensure secure data handling and compliance with GDPR and Toyota FS standards. Execute phased rollout of surveys, starting with small samples ...

Network Services Engineer

Hiring Organisation
NETS-International Group
Location
City of London, London, United Kingdom
other APIs to enable end-to-end automation. ● Adhere to software development best practices, including version control (Git), code reviews, unit testing, and continuous integration/continuous delivery (CI/CD) pipelines ● Troubleshoot complex issues within NSO service packages, device integrations, and the interaction between the orchestrator … proficiency in network programmability concepts and protocols, including YANG, NETCONF, and RESTCONF. ● Strong programming skills in Python or Java, specifically for network automation and API integration. ● Deep understanding of the Cisco NSO architecture, including its Service Manager, Device Manager, Configuration Database (CDB), and Layered Services Architecture (LSA). ...

Technical Product Manager – AdTech/B2B Focus

Hiring Organisation
FairPlay Sports Media
Location
City of London, London, United Kingdom
launch. Gather and analyze user feedback to identify areas for improvement and inform future product iterations. Manage external vendor relationships and ensure successful integration with third-party platforms. Metrics & Analytics: Define and track key performance indicators (KPIs) to measure the success of the AdTech platform. Analyze user data … experience in defining and tracking product KPIs. Experience in user research and ability to translate user feedback into actionable product roadmaps. Desired: Experience with API development and integration. Experience working with cloud-based platforms (e.g., AWS, Azure, GCP). Experience in managing external vendor relationships (optional, but a plus ...

Software Engineer

Hiring Organisation
Primis
Location
City of London, London, United Kingdom
FastAPI & Python focused role for someone who is ready for the fast paced scale-up environment. What you’ll do Own backend features and API integrations (Python, FastAPI, gRPC, SQL). Adapt and extend auto-generated pipelines and front-end outputs. Build connectors for APIs, files, and external systems. … Integrate LLM-based capabilities with robust evaluation and monitoring. What we’re looking for Strong Python backend/API experience; SQL and data modeling skills. Proven integrations experience Workflow orchestration know-how. Track record using AI-assisted dev in production. Comfortable working with generated code and improving automation. Familiarity ...