Work with Python, FastAPI, Docker, DuckDB, JSON Schema and Git to design, build and ship client ETL pipelines that map raw bank data onto the FIRE regulatory reporting standard. You will maintain a shared ETL framework, write validated mapping code, and mentor junior engineers at Suade, a regtech SaaS company automating compliance for financial institutions.

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.

You will work with Python, YAML, JSON, Ansible AAP, NDFC, NX-OS, VXLAN BGP-EVPN, vPC, Git, GitHub/GitLab, pyATS, and Genie. The role involves building CI/CD pipelines and automation workflows for Cisco data centers, implementing GitOps and IaC on a contract network engineering project.

Senior WordPress Developer role: build bespoke WordPress sites and apps using PHP, MySQL, ACF, WooCommerce, Gutenberg, JavaScript (ES6+), SASS/SCSS, Git, Composer, npm, Vite, CI/CD. You’ll also drive AI-assisted development (RAG, MCP, Copilot) and mentor junior developers.

Checkout.com★3.8 (15)· London

You'll work with REST/JSON APIs, Postman, JavaScript, React, Angular, Java, .NET, Python, Node, and payment technologies like 3DS, tokenisation, and Apple/Google Pay. As a Sales Engineer, you'll support clients integrating Checkout.com's online payments platform, which powers transactions for companies like eBay, Uber, and Spotify.

You will work with JavaScript, PHP, HTML, CSS, Laravel, Bootstrap, APIs/JSON/XML, MySQL, and optionally React. As part of a fullstack team, you will design, build, and maintain frontend and backend systems for a fine bridal jewellery manufacturer’s online platform, migrating legacy systems to Laravel.

You'll work with Trino, Iceberg, dbt, Airflow, Kafka, Python, SQL, Java or Scala to build and optimize data pipelines on a Lakehouse following Medallion Architecture (Bronze, Silver, Gold layers). You'll join Wise’s Data Onboarding Team, part of the Finance Squad that stewards the company’s financial truth by processing hundreds of millions of high-throughput financial events daily into audit-ready structures. The team abstracts product complexity into reusable, domain-agnostic stream-enrichment pipelines.

Atos★3.5 (3.2k)· London

You will work with **Java, Spring Boot, React JS, AWS Cloud, Microservices, Mulesoft (Anypoint Studio, API Manager), CI/CD, Git, and Jest**. The team supports, enhances, and modernizes complex enterprise applications as part of large-scale digital transformation and cloud migration programs at Atos, a global digital services provider.

Senior Software Engineer II building data pipelines on Trino, Iceberg, Kafka, dbt, Airflow, and Python/SQL for a Finance Squad. The team handles high-throughput financial event data within a Medallion Architecture, creating reusable stream-enrichment pipelines to support financial reporting and assurance at a global money-transfer company.

You will work with Java, Spring Boot, React JS, JSF UI, AWS, Microservices, Mulesoft (Anypoint Studio, API Manager), CI/CD, Git and Jest. The team supports, enhances and modernizes complex enterprise applications and large-scale digital transformation initiatives for the company's global clients.

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.

Work with Python, BeautifulSoup, Selenium, and Apify to scrape dynamic web content, extract data from complex structures, and deliver structured datasets. You will join the Tendem project, driving specialized data scraping workflows for real-world applications. LLM and AI frameworks are also used to enhance automation.

Wise★3.5 (42)· London

Work with Trino, Iceberg, Kafka, dbt, Airflow, Python, SQL and Java/Scala to build streaming data pipelines on a Lakehouse using Medallion Architecture (Bronze/Silver/Gold). You will own data extraction, cleaning and modeling for the Data Onboarding team, which bridges product events and audit-ready financial structures for Wise’s global cross-border money movement platform.

Google★4.3 (6.2k)· London

Work with HTML, CSS, JavaScript, HTTP, Java, C/C++, Python, Node.js, TypeScript, RESTful APIs, OAuth2, JSON webhooks, GCP, Dialogflow, and Gemini. You will lead end-to-end conversational messaging solutions, building chatbots and integrating agentic experiences for the Android and Business Communication Partner Engineering team.

You will work with SIEM platforms (Splunk, Microsoft Sentinel, QRadar, Elastic, LogRhythm, ArcSight, Exabeam), SOAR tools, and scripting (Python, PowerShell). You will enhance and mature a global professional-services firm's security monitoring platform by onboarding log sources, developing detection use cases, and supporting incident response.

FDM Group★2.9 (270)· London

You'll work with Python, pandas, JSON, REST APIs, LLMs, RAG, vector embeddings, and semantic search to build data ingestion pipelines and scalable platforms that enable AI-powered analytics and decision support within a leading global investment bank.

You will design, develop, and support high-performance integration services using IBM App Connect Enterprise (ACE v12) and IBM Integration Bus (IIB v10+), working with IBM MQ, Oracle databases (SQL/PLSQL), Linux, XML/JSON, and message flows for enterprise integration. This role is on a team delivering business-critical transaction-processing solutions within a financial services environment.

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.

The Head of AI works with Python, NLP pipelines, LLMs, knowledge graphs, and clinical ontologies like SNOMED CT and ICD. This role leads a team building Dyad's Semantic AI platform combining structured knowledge with generative AI to improve healthcare delivery, with products such as BetterLetter for clinical correspondence processing. The position designs and operationalises the graph-integrated generative architecture for production systems handling unstructured clinical text, including evaluation and compliance frameworks.

Cushman & Wakefield★3.6 (2.3k)· London

Senior Data Engineer role using Databricks, Python, PySpark, SQL, Azure, and Unity Catalog. You will build an AI-amplified data platform for a global real estate services firm, shifting the team from writing code to orchestrating AI. Hands-on role with influence on technical direction.

Core Java, Spring Framework, Linux, and relational databases for low-latency eTrading applications on a globally distributed team building the next generation Front Office Trading System for Fixed Income and Derivatives flows.

FDM Group★2.9 (270)· London

Python, pandas, JSON, REST APIs, FastAPI, LLMs, RAG, vector embeddings, semantic search, Plotly, and Plotly Dash. You will build scalable data platforms and AI-powered solutions for a leading global investment bank, enabling intelligent scenario modelling and decision support.

You will design and build AI-powered workflows using generative AI and large language models. The role is within the firm’s Applied AI Lab, which experiments, prototypes, and ships AI-powered solutions to support lawyers in delivering complex cross-border legal work.

You will work with SIEM platforms including Splunk, Microsoft Sentinel, QRadar, Elastic, ArcSight, LogRhythm, or Exabeam, along with SOAR tools, scripting in Python and PowerShell, and cloud platforms such as Azure, AWS, and GCP. Your role advances the maturity of the SIEM platform by onboarding log sources, optimizing data pipelines, and developing detection use cases aligned to MITRE ATT&CK to improve security monitoring and response.

Engineers build scalable backend services, REST APIs, and microservices for a Personal Loans platform using Java, Spring Boot, and Kafka within an event-driven architecture on AWS. The role supports CI/CD, automated testing, and production troubleshooting for this enterprise-scale BFSI product.