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.

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.

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.

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.

Python and SQL for data wrangling, ETL/ELT pipelines; cloud platforms (AWS, Azure, GCP); data modeling, MDM, API integrations. You'll design data infrastructure and pipelines across client engagements in a Data & AI consulting team.

Work with Microsoft Dynamics 365, Power Platform, C#, JavaScript, TypeScript, Power Apps, Power Automate, Dataverse, SQL, APIs, and Power BI. Design, build, customize, and deploy solutions across Dynamics 365 modules (Customer Engagement, Sales, Service, Field Service, Finance, Operations) and integrate with external systems.

Yapily★0.0· London

Lead a team building core microservices on Yapily's open banking platform, using Java, Spring Boot, and Kubernetes. Design REST APIs with OpenAPI/Swagger, oversee scalability and monitoring, and drive Agile delivery.

Apple★4.1 (14k)· London

Work with TypeScript, React, Webpack, Jest, Java, Spring, and Swagger/OpenAPI. You will help develop next-generation cloud services for iCloud Platform, enabling new applications and scaling existing ones like FaceTime, PushNotifications, Photos, and Backup.

Design, develop and deploy custom Dynamics 365 solutions (Customer Service, Sales, Finance & Operations, Field Service) using C#, JavaScript, TypeScript, Power Apps, Power Automate, Dataverse, SQL Server, Azure services and REST/SOAP APIs. The role delivers and enhances the Microsoft Dynamics 365 platform, supporting key business applications across the organisation.

Barclays★3.9 (6.9k)· London

Work with Oracle Cloud Infrastructure (OCI), PL/SQL, BI Publisher, ETL, REST/SOAP APIs, and secure file transfer (MFT/SFTP) to design and develop integrations between Oracle Fusion Cloud and upstream/downstream financial systems, and build BI Publisher reports for Barclays.

You will work with Salesforce, SQL, REST/SOAP APIs, and preferably MuleSoft, Python, and iPaaS platforms to build data pipelines and ETL/ELT processes. This role supports a leading Salesforce Partner in connecting multiple business systems through scalable, API-led integrations.

Visa★3.9 (1.2k)· London

You will work with Java 11+, Spring Boot, AWS, Kubernetes, Kafka, ElasticSearch, Datadog, Docker, Terraform, OpenAPI, SQL, PACT, and CI/CD pipelines. As part of cross-functional squads, you will build and maintain a high‑availability, cloud‑native payments platform that processes over 50 billion USD in cross‑border transactions. You will lead technical direction, shape architecture, and mentor junior engineers.

Axle★3.5 (18)· London

Design a shared GCP pipeline for a Finance Transformation program, using Cloud Dataflow, Cloud Composer, Cloud SQL, Firebase, Workday RaaS/REST, and Oracle Fusion REST APIs. You will build connectors, unify HR and Finance data models, implement lineage graphs, and support Power BI DirectQuery — pairing with domain analysts on extraction builds.

Wise★3.5 (42)· London

You'll use Java (Spring), Kubernetes, AWS, RESTful APIs, Swagger, OpenAPI, OAuth2, and relational/non-relational databases like MySQL, PostgreSQL, MongoDB, and Cassandra. On the Wise Platform team, you'll provide technical consulting and integration support to global financial institutions and tech companies embedding Wise's international money movement products via API.

Citi★3.9 (21k)· London

This role architects Citi's strategic Release on Demand platform, using event-driven architecture and AI, while establishing its observability and end-to-end testing strategies. The Developer Enablement team builds internal SDLC automation tools for the bank's 30,000 engineers. As SVP and technical authority, this role leads a small, agile team and owns the technical roadmap.

Worldpay★3.0 (53)· London

You will work with Python, AWS, CI/CD pipelines, and ML tools like MLFlow, FastAPI, and containerization. As part of the Data Science Enablement team, you will own the technical delivery of production ML products and contribute to the shared ML platform for Worldpay’s payment solutions.