76 to 100 of 170 REST Jobs in London

Senior Salesforce Developer (Marketing Cloud/Data Cloud)

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Permanent
Salary
£85000 - £90000/annum
Cloud Next/Advanced Work with Data Cloud (Data 360) on ingestion, modelling, identity resolution, and activation Build integrations across Salesforce and marketing platforms (REST/SOAP APIs) Collaborate with product, marketing, and UX teams to deliver high-quality solutions Support CI/CD processes (Copado), testing, and production troubleshooting ...

Principal Architect - Banking, APIs, Kafka, Cloud Platforms

Hiring Organisation
Robert Walters
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£100,000 - £120,000 per annum
Integration/Solution Architecture within financial services or large enterprises Strong knowledge of API gateways, Kafka/MQ, ESB/iPaaS platforms Experience with REST APIs, event-driven systems and distributed architectures Understanding of data platforms, real-time vs batch processing and AI/ML integration Familiarity with GDPR, DORA ...

Senior Salesforce Developer - Service Could - Experience Cloud - Marketing Cloud - Apex - LWC

Hiring Organisation
Nexere Consulting Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 80,000 - 95,000 Annual
issues for both projects and BAU. Essential Skills & Experience Extensive hands-on Salesforce development experience in complex environments. Strong skills in Apex, LWC, SOQL, REST/SOAP APIs, and Salesforce configuration. Solid understanding of Service Cloud and Experience Cloud (essential); Marketing Cloud and Sales Cloud (desirable). Experience with ...

Java Engineer – Buyside FX Trading Systems

Hiring Organisation
Albert Bow
Location
City of London, London, United Kingdom
work closely with a Senior Java Engineer and Lead Quant, focused on execution and delivery. Must‐Have Skills Strong Java Spring Boot REST API development Solid understanding of performance, reliability, and production systems AWS (EC2, S3) Docker/Kubernetes Terraform CI/CD pipelines Prometheus & Grafana Low‐latency or performance ...

Sr Python Developer

Hiring Organisation
Ampstek
Location
City of London, Greater London, UK
system design, architecture and scalability decisions • Collaborate with quants, traders and risk teams to translate business requirements into technical solutions • Develop and integrate REST APIs and backend services • Contribute to CI/CD pipelines and deployment processes • Support production systems (L2/L3) including debugging, enhancements and performance optimization • Write ...

Lead Platform Engineer

Hiring Organisation
Synapri
Location
London, United Kingdom
Employment Type
Permanent
Salary
£75000 - £85000/annum
understanding of Data Lakehouse architecture and modern data platform design. Proficiency in Python for data engineering, automation, and data processing. Experience developing and integrating REST APIs for data services. Strong DevOps experience, including CI/CD, automated testing, and release management for data platforms. Experience with Infrastructure as Code tools ...

Sr Python Developer – Trading / Risk Platforms

Hiring Organisation
Crisil
Location
London Area, United Kingdom
system design, architecture and scalability decisions Collaborate with quants, traders and risk teams to translate business requirements into technical solutions Develop and integrate REST APIs and backend services Contribute to CI/CD pipelines and deployment processes Support production systems (L2/L3) including debugging, enhancements and performance optimization Write ...

Lead Data Platform Engineer - Databricks - IAC - Terraform - Azure Data Factory - Data Lakehouse

Hiring Organisation
Nexere Consulting Limited
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 80,000 - 85,000 Annual
understanding of Data Lakehouse architecture and modern data platform design. Proficiency in Python for data engineering, automation, and data processing. Experience developing and integrating REST APIs for data services. Strong DevOps experience, including CI/CD, automated testing, and release management for data platforms. Experience with Infrastructure as Code tools ...

SAP BTP Integration Suite Developer

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
bring: * Proven experience in designing and deploying integration flows within SAP BTP, especially CPI, API Management, and Event Mesh. * Strong knowledge of REST, SOAP, OData, and SFTP protocols. * Solid scripting skills, particularly with Groovy, and experience with message mapping. * Familiarity with Agile methodologies and CI/CD pipelines. * Ability ...

Mobile Engineer

Hiring Organisation
Accelero
Location
City of London, Greater London, UK
Skills & Experience Commercial experience developing mobile applications. Solid experience with React Native or Flutter Experience contributing to web, backend and mobile applications Understanding of REST APIs and service‐based architectures Familiarity with relational and/or NoSQL databases Knowledge of common design patterns and modern development practices Strong communication skills ...

Salesforce Data 360 Architect (SC Cleared)

Hiring Organisation
ARM
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £750/day Inside IR35
experience Data Streams Identity Resolution Segmentation & Activations Unified Data Model Transformations & Insights Experience delivering end-to-end Salesforce Data Cloud implementations Strong integration experience (REST APIs, ETL, third-party platforms) Solid SQL and data architecture knowledge Experience integrating with platforms such as Snowflake, Databricks, AWS, BigQuery, or Tableau Salesforce Data ...

Lead Fullstack Engineer

Hiring Organisation
Immersum
Location
City of London, London, United Kingdom
modern frontend framework (React, Vue, Next.js) Experience designing and delivering scalable, cloud-based systems (AWS, Azure or GCP) Strong understanding of API design (REST/GraphQL), databases and system architecture Experience with CI/CD, infrastructure as code (e.g. Terraform) and automated testing Ability to design for non-functional requirements ...

Founding Engineer

Hiring Organisation
Explore Group
Location
City of London, London, United Kingdom
beyond. Core requirements: 3 plus years of engineering experience Strong in React and comfortable across the full JavaScript and TypeScript stack Backend experience building REST APIs using NestJS or Express Or Python Experience with MongoDB or similar databases Evidence of building independently, for example side projects, startups, open source work ...

Founding Engineer

Hiring Organisation
Tarka Talent
Location
City of London, London, United Kingdom
systems in production and 3–5 years of substantive software/platform engineering Deep JavaScript/Node.js skills Azure Fluency JSON data structures, REST API design, and complex semi-structured data Practical LLM application — RAG architectures, prompt engineering etc Comfort with both relational (MS SQL) and document (MongoDB) databases This ...

Software Engineer

Hiring Organisation
Apex Systems
Location
Bromley, England, United Kingdom
collaboration, interpersonal skills and demonstrate the capability for juggling multiple competing priorities. • Candidates will be proficient in software design focused on a cross-language REST based n-tier architecture and executed using agile methodologies (Scrum, Test Driven Development, unit/integration testing, pair programming, etc.). The successful candidate will ...

Lead C# Engineer - Agentic Workflows & AI Engineering, AWS

Hiring Organisation
Smart Sourcer Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £800 to £900 per day OUTSIDE IR35
level backend engineer with deep, current expertise in C# and .NET Core 8/9 , capable of architecting and leading the design of distributed REST API microservices at scale. Authority in AWS serverless architecture; Lambda-first, with strong working knowledge of API Gateway, SQS, Step Functions, EventBridge ...

Senior Python Developer

Hiring Organisation
TreasurySpring
Location
City of London, Greater London, UK
notation. Our frontend systems include our clean, simple web portal for client order capture and reporting, built in TypeScript and React; with server-side REST and GraphQL APIs written in Python3. What we’re looking for... Essential skills and experience: 5+ years experience of developing complex applications using … currently use: Flask, SqlAlchemy, Alembic, Pydantic Experience with relational databases, ideally Postgres Experience of message-based architectures, and queuing technologies, i.e. RabbitMQ Experience of REST and/or GraphQL APIs Knowledge of the core AWS services: i.e. EC2/ECS, RDS, S3 Experience using DataDog or similar observability tools Knowledge ...

Salesforce Architect

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Permanent
Salary
£105000 - £115000/annum bonus + bens
Strong hands on expertise with Salesforce Financial Services Cloud Advanced Salesforce development skills (LWC, Apex, SOQL/SOSL, Flows) Experience delivering complex Salesforce integrations (REST/SOAP, middleware) Deep understanding of Salesforce security, sharing models and governor limits Experience leading development teams or acting as a technical design authority Practical ...

NEC Housing Developer – Contract Role

Hiring Organisation
Reed
Location
Wembley, London, England, United Kingdom
Employment Type
Temporary
Salary
£550 per day, Inc benefits
configuring or upgrading NEC Housing management systems In-depth understanding of NEC Housing database structures and data models Experience with XML, JSON, SOAP, and REST integrations Desirable: Java development experience Local authority or social housing experience This is a specialist short-term engagement supporting a major implementation programme, with ...

React UI Developer

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £650 per day
reviews and frontend best practices Required Skills Strong experience with React JavaScript (ES6+)/TypeScript HTML5, CSS3, responsive design State management (Redux, Context, etc.) REST APIs, Git, basic testing (Jest/Cypress) Nice to Have Next.js, design systems, Storybook UI libraries (MUI, Tailwind, Ant Design) Accessibility (WCAG) Reasonable Adjustments: Respect ...

NEC Housing Developer - Contract Role

Hiring Organisation
Reed
Location
London, UK
Employment Type
Full-time
enhancements Technical Skills & ExperienceEssential: Strong SQL scripting experience Oracle Database expertise Oracle Apex development experience Proven NEC Housing system experience XML, JSON, SOAP, and REST API experience Desirable: Java development Local authority or social housing experience ...

Principal Engineer

Hiring Organisation
La Fosse Associates Limited
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
/React environment) Solid knowledge of AWS (EKS, Lambda, Aurora RDS) Hands-on experience with Kubernetes in cloud-native environments Proven ability building GraphQL & REST APIs Experience with event-driven architectures (Kafka advantageous) Exposure to CI/CD pipelines (GitHub Actions preferred) Experience with monitoring tools (eg, DataDog) Strong background ...

Senior Salesforce Engineer (Financial Services Cloud)

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Permanent
Salary
£85000 - £90000/annum
with Lightning Web Components (LWC), Flows, and integrations Configure and support FSC features (Person Accounts, households, Action Plans, etc.) Design and implement integrations using REST/SOAP APIs Collaborate with Product Owners, BAs, and Architects to translate requirements Support testing, releases, and CI/CD processes (Copado) Troubleshoot issues ...

Data Engineer

Hiring Organisation
Taylor Hopkinson Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Databricks and Azure (ADLS Gen2, ADF or equivalent). * Proven ability to implement Medallion architecture or equivalent layered data modelling patterns. * Experience with REST API ingestion and integration of business systems (ERP, finance tools). * Experience in a contractor or project-based delivery model preferred. * Exposure to OT/SCADA ...

Integration Developer

Hiring Organisation
Oscar Associates (UK) Limited
Location
London, United Kingdom
Employment Type
Contract
SaaS products with internal systems Solid development experience using .NET Hands-on experience with Terraform or similar Infrastructure as Code tools Good understanding of REST APIs, authentication methods, and security principles Bonus Points If You Have Experience with Azure API Management or comparable platforms Familiarity with CI/CD pipelines ...