Lead the EMEA Solutions Engineering team for Wise Platform, working with REST APIs (RESTful design, OpenAPI, OAuth2) and microservices architecture. The team helps top-tier banks and tech companies integrate Wise’s international finance products via their public API, providing post-sale technical consulting. You will build and mentor a high-performing technical delivery team, defining goals aligned with Wise Platform’s objectives.

You will build scalable server-side logic using JavaScript, TypeScript, and Node.js in a microservices architecture on AWS with Kubernetes, Terraform, Kafka, and Snowflake. You will join the MMH team within the Martech domain, which orchestrates campaign delivery across email, push notifications, and personalised content for all Sainsbury’s Group brands. The team includes 7 engineers.

Develop backend services using Node.js, Python, Java, C#, PHP, and Ruby on Rails, with databases including MySQL,

Wise★3.5 (42)· London

Lead a growing Solutions Engineering team in EMEA, providing technical consulting and product guidance to top-tier banks integrating Wise’s international finance products via REST API. Work with RESTful design, OpenAPI, OAuth2, and microservice architecture to architect integrations and influence the product roadmap.

BNY★3.5 (5.5k)· London

You'll use Java 17/21 with Spring, Maven, Groovy, JavaScript/TypeScript (Angular), Docker, GitLab CI/CD, IntelliJ, Windsurf, Splunk, and AppDynamics to build secure backend services, batches, and APIs for a global financial services company.

Java 11+, Spring Boot, microservices, event-driven architecture, Terraform, and cloud platforms (Azure, AWS, or GCP). The team builds post-trade technology solutions including business-critical applications, APIs, client reporting platforms, and web portals for capital markets. You will mentor developers and contribute to architectural decisions.

State Street★3.4 (3k)· London

Work with FIX, Web Services (SOAP), VBA/SQL, and AI technologies. The role sits within State Street's GlobalLink suite, which provides FX electronic trading platforms (FX Connect, Currenex) for execution, workflow automation, and post-trade processing. As an Integration Analyst (AVP), you implement FIX-based workflow solutions for buy and sell-side clients.

Senior Software Engineer designs and maintains backend services and APIs using Java, Python, and Node.js, working with microservices and Spring Boot. The role involves building REST, GraphQL, and SOAP APIs, using relational and NoSQL databases (MySQL, PostgreSQL, Oracle, Redis), and performing cloud-native development in AWS environments. This position supports financial systems and integrations within the leading global business aviation company, Vista.

Build and support scalable enterprise integrations using Workato, APIs, webhooks, REST, SOAP, GraphQL, OAuth, JSON, XML, SQL, JavaScript, Python, and Workato formulas. Integrations span finance, HR, CRM, document management, and analytics platforms. No team size specified.

Wise★3.5 (42)· London

Build backend

Cognizant★3.8 (17k)· London

Work with ServiceNow modules (ITSM, ITOM, ITAM, HRSD, CSM, GRC, SecOps, App Engine), integrations (REST, SOAP, APIs, MID Servers), scripting (JavaScript, Glide, Flow Designer), CMDB, CSDM, and telecom OSS/BSS systems using TM Forum Open APIs. Architect ServiceNow solutions for telecommunications, defining platform roadmaps and leading cross-module implementations to align with OSS/BSS needs and enterprise governance.

Adaptive Financial Consulting★5.0 (1)· London

Java, Spring, Cucumber, JUnit, GitHub, FIX Protocol, and Aeron are key technologies. The role is within a financial consulting firm that designs and delivers front-office technology solutions for capital, commodity, and digital market participants. This is a contract position, outside IR35, in the Fintech sector.

Netbuilder★3.0 (1)· London

Full-stack developers use Java, Spring Boot, React, TypeScript, Oracle, MySQL, Git, Jenkins, Spinnaker, Docker, and Kubernetes to build, enhance, and support scalable web applications, APIs, and enterprise platforms for NETbuilder, a digital solutions provider.

Python, JavaScript/TypeScript, Java, C#, Go, pytest, Jest, JUnit, xUnit, Go testing. You will work on a project with a leading AI lab, building and debugging production systems.

You will work with Java 11+, Spring/Spring Boot, Microservices, TDD/BDD (JUnit, Spock, Mockito), Git, Maven, and CI/CD on a cloud platform (AWS, Azure, or GCP). The role involves building and evolving a post-trade technology platform — including in-house systems, APIs, and client portal — for a specialist post-trade clearing and prime brokerage firm. You will also manage and mentor a small team of Java developers.

TikTok★3.3 (342)· London

You will use Salesforce Commerce Cloud, Shopify, Netsuite, RESTful/SOAP APIs, Postman, and OMS platforms to guide e-Commerce integrations for TikTok Shop merchants. You will partner with Product, Account Management, and Engineering teams to optimize product platforms and scale merchant connections.

You will design and maintain automated UI, API, and service-level tests in TypeScript using Serenity/JS and Playwright, plus Python/pytest and C#/.NET. The role involves testing the ACE application and internal platform tooling for a decentralised AI platform optimising energy in data centres.

Design and evaluate realistic software engineering tasks using Python, JavaScript/TypeScript, Java, C#, or Go with testing frameworks like pytest, Jest, JUnit, xUnit, or Go testing. As a project consultant, you will create complex multi-file coding scenarios, write specifications, and review peer submissions. The role is part-time and remote.

This Test Manager role oversees end-to-end testing for large insurance programmes using test management tools like JIRA, with essential Agile/Scrum experience and knowledge of QA methodologies, test automation, and defect management. The position coordinates testing processes across major initiatives at Arch Insurance, collaborating with developers, QA engineers, product managers and stakeholders to ensure quality, compliance and UAT delivery. The role requires significant leadership experience managing large testing implementations and driving continuous improvement across testing practices.

Lead Engineer using Vue (frontend), Django/Laravel (backend), AWS, Stripe/Salesforce/Netsuite integrations, SOAP, REST/OpenAPI, and project tools like JIRA, GitHub. Builds and maintains the user-facing commercial platform central to customer interaction. Manages and mentors junior developers, acting as project manager for releases.

Head of Quality Engineering to own quality across the organisation, working with PHP, Kotlin, GO, Python, Typescript, React, React Native, GraphQL, Relay, PHPUnit, Behat, JUnit, Kotest, Jest, Maestro, K6, Datadog, Sentry, Incident.io, Grafana, AWS, Docker, Kubernetes, RabbitMQ, Argo, Github, and Github Actions. The role will lead the use of AI (LLMs) for testing and will manage a team of approximately two Quality Engineers while being hands-on with code and CI pipelines. Lendable builds technology for consumer credit and savings products.

Develop production code using Java 8+, Spring (Core, Boot, Integration), Kafka, Oracle/MySQL, and tools like JUnit, Mockito, Cucumber, Selenium. This role designs and secures scalable tech products for a bank, handling system design, microservices, and operational stability in an agile environment.

Liberis★4.2 (5)· London

You'll work with Apex, Lightning Web Components, SOQL/SOSL, Flow, REST/SOAP APIs, GitHub, CI/CD, and Salesforce DX. You'll lead a pod of up to four developers and admins owning the Salesforce platform that drives merchant and partner acquisition, onboarding, and support across 15 markets for Liberis, an embedded finance platform for small business funding.

You will work with Selenium, Playwright, Java, Python, and API testing tools (REST/SOAP) to develop and maintain automated test suites within CI/CD pipelines, supporting modern cloud-native digital services built on microservices architectures. As a Test Engineer at TCS, a global IT services and consulting company, you'll embed quality early in the development lifecycle, collaborating with developers and DevOps engineers on Agile delivery teams while contributing guidance and mentoring to other testers.

You will work with Azure Cloud Services, Python, Databricks, ETLs, REST/SOAP APIs, SQL, and data warehouse solutions, using DevOps and CI/CD pipelines. You will lead integration design and delivery for the HS2 main works team at Skanska, a project development and construction group.