Wise★3.5 (42)· London

You'll work with Java, Spring Boot, and Kafka on high-concurrency systems. The Assets team scales a "Yield Engine" managing billions in assets; the Investments team builds brokerage infrastructure for individual stock trading and tax-beneficial pots inside Wise.

Python and C++ (C++17 or later), SQL, and Linux. The team builds and enhances a cutting-edge quantitative trading platform for a world-leading hedge fund, working alongside senior PMs, quants, and engineers across major financial markets.

You will develop, maintain, and enhance Excel-based applications and add-ins using C#, .NET, Excel-DNA, VBA, SQL, and potentially Python. Working within a technology solutions team, you will support front-office investment teams (trading, research, portfolio management) by building tools that improve workflow automation, data access, and analytical capabilities.

You will work with Python, PowerShell, SQL, OMS/EMS platforms (FlexTrade, Triton, SpiderRock), Linux, Windows, cloud (AWS/Kubernetes), FIX, messaging systems, market data flows, and monitoring tools like Geneos/Zabbix. As part of a global hedge fund’s front-office technology team, you will directly support equity portfolio managers, traders, and analysts to ensure the reliability and performance of business-critical trading systems.

You'll use Python daily, with KDB and SQL useful. You'll build a Vol Alpha library for equity-derivatives volatility strategy development and backtesting, working with portfolio managers on dispersion and relative-value strategies. You'll join a new specialist team of engineers, quants and data scientists.

You'll work with C# and .NET as core systems, plus Python across quant and data groups, and may use other OO languages. The role involves designing and building high-impact trading and research platforms for a fixed-income hedge fund's front-office engineering team.

Develop end-to-end solutions in Python (pandas/numpy) for the Commodities RAD team, building data, research & trading platforms and tools for Portfolio Managers. Also use React/Angular for web frontends and SQL for databases.

Build a Python-based platform integrating datasets, analytics/pricing systems and tech platforms for a top-performing hedge fund team. Construct and maintain robust APIs and services supporting portfolio managers in trading, risk management and research. Focus on API design with scalability and reliability in a high-volume front-office setting.

DeepL★3.8 (4)· London

Work with React, TypeScript, Node.js, WebRTC, WebSockets, and streaming architectures. You will join DeepL Voice, building real-time interpretation features for fluid conversations and audio streams. This is a 0-to-1 engineering environment in a cross-functional squad.

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.

Lead C++ and Python design and development of the order management system, working directly with portfolio managers at a macro fund where technology is core to alpha generation.

You will work with SCADA, DMS, OMS, DERMS, ICCP, CIM, IEC protocols, GIS, and AMI. As ADMS Engineering Leader on the Intelligent Grid Solutions team, you will deliver large-scale Advanced Distribution Management System programmes for European utilities, leading multi-disciplinary engineering teams.

TypeScript, Node, React, AWS, Kubernetes, GitHub Actions, Terraform, and Grafana. You'll own Minut's guest experience surface—messaging flows, guest app, and integrations that turn sensor events into delightful guest experiences. The team is 20+ engineers across product, platform, mobile, firmware, and ML.

Morgan McKinley★3.8 (45)· London

Core Java, Linux, low-latency messaging (FIX, SBE, Aeron, 29West), OMS, and performance profiling. The role designs and builds next-generation server-side crypto trading systems for a digital assets and data center infrastructure leader.

Work with Python, SQL, REST APIs, messaging, cloud platforms, and an Order Management System such as Charles River IMS. You will design and enhance applications supporting front- and middle-office investment management workflows, including portfolio management, trading, and data pipelines.

Miro★4.8 (16)· London

You'll work with React, TypeScript, CSS, WebGL, Canvas API, and SVG to build Miro's core canvas interaction layer—handling rendering, input, real-time multiplayer presence, and AI collaborator experiences. The Canvas, Multiplayer & AI team owns the infinite, collaborative surface where millions work together, focusing on how AI integrates naturally into shared visual spaces rather than as a bolted-on feature. As a Staff Design Engineer, you'll set quality standards across the design engineering practice while prototyping interactions directly in code and influencing the broader organization's craft standards.

Work with Python for time-series analysis, data management and internal libraries, plus SQL and GitHub. This role coaches fundamental long/short, index arbitrage and merger arbitrage equity Portfolio Managers on portfolio construction, risk and profitability, developing quantitative models to analyze risk, performance and P&L.

You will use low-level C++, automated testing, and CI/CD to design and develop low latency trading components and infrastructure for the Systematic technology team at Balyasny Asset Management L.P., a global asset manager.

You will design and build a low-latency, high-throughput Smart Order Router and execution-algo suite in Java, with technologies including FIX, Aeron, Chronicle Queue, LMAX Disruptor, multicast feeds, and kernel bypass. The team is developing greenfield EMS and SOR execution algorithms (VWAP, TWAP, POV, liquidity seeking) for FX and digital-asset markets.

You will own the design system and ship pixel-perfect UI in React, TypeScript, Tailwind, and modern browser APIs, with 20-30% back-end work in Node and SvelteKit. The company builds an AI-native integration layer for SaaS products and agents, providing unified APIs and tooling to connect products to hundreds of third-party tools.

Adaptive Financial Consulting★5.0 (1)· London

You will work with Core Java, Java 17+, FIX protocol, and event-driven architecture in cloud-based environments. You will help design and deliver front-office trading technology solutions (OMS, EMS, exchange systems, matching engines) for capital markets clients.

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.

You'll work with SQL, Python, R, dbt, Hex/Looker, Statsig/Eppo, and Amplitude/Mixpanel. Embedded in a small, fast-moving team building a new AI-native product inside Goodnotes, you'll define success metrics, build experimentation practice, and enable self-serve analytics.

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'll set technical direction for a squad modernising a billing pipeline using TypeScript, Node.js, NestJS, PHP 8.x, Symfony, RabbitMQ, Kafka, SQS, PostgreSQL, GitLab CI/CD, and Grafana. The Interstellar Squad owns the mission-critical, event-driven billing run for Wireless Logic’s IoT connectivity platform.