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.

Use Selenium, Playwright, Postman, JMeter, Jira, SQL, Git, Jenkins, and Azure DevOps to design and execute manual and automated tests. Validate merchant onboarding, payment processing, settlements, terminal management, and Lloyds Accept application flows across web, mobile (iOS/Android), and API systems.

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.

Work with C# on .Net Framework 4.5.2+ and .Net 5+, using NUnit, xUnit, REST, Kafka/RabbitMQ, Git, and Linux. You will build Citi’s next-generation Equities technology platform for execution, clearing, and margin processes.

The role involves working with Java (server-side, multithreading), kdb+/q, Python, and CI/CD/testing frameworks. It sits within a specialist team that builds low-latency pricing, eTrading, and eRisk components for Rates and FX products, covering forwards, futures, swaps, bonds, and eCommerce quoting.

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.

You will work with Java, Selenium, RestAssured, Gherkin, and Jira/Xray to design and maintain automated test frameworks. This cross-functional Agile squad develops complex healthcare software systems that support Genomics England’s genomic medicine and research initiatives for the NHS.

QA Engineer role using **Python** for test automation, with **Gherkin**-based test cases, **Jira/Xray**, and **CI/CD pipelines**. You will build and maintain automated test frameworks covering UI, API, integration, and regression testing for the software systems that underpin Genomics England’s genomic healthcare and research mission.

You'll work with Java, Go, Kubernetes, Prometheus, Grafana, Helm, and chaos-engineering tools to design and execute automated reliability tests and fault injection experiments on Camunda 8, the enterprise platform for agentic orchestration that coordinates AI agents, people, and systems across business processes.

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.

The role involves C#, ASP.NET Core, async/await, Entity Framework Core, Git, and optionally Azure DevOps, Docker, and Playwright. You will build backend services, integration layers, and AI API integrations for large-scale websites, apps, and platforms delivered to global brands.

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.

Pacific Life★3.7 (310)· London

You will work with Appian for workflow, case management and orchestration, plus automation tools, RPA, AI, cloud services, intelligent document processing and dashboards. The Digital Process team designs, builds and embeds automation and orchestration solutions to support a global digital transformation programme.

Work with Appian, RPA, AI, cloud services, data processing, intelligent document processing, and process intelligence. As part of the Digital Process team, you design, build, and embed workflow orchestration and automation solutions to support a global digital transformation programme.

You will work with JMeter, Postman, Gatling, k6, Grafana, Kibana, and CI/CD tools. You will design and execute performance, load, and stress tests to ensure the scalability and reliability of large-scale digital services, supporting cross-functional delivery teams.

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.

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.

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.

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.