---
title: 'Senior Software Engineer, C++ at Flow Traders'
canonical: 'https://feeny.ai/job/senior-software-engineer-c-flow-traders-london-4ag5vnc4jdb8'
type: 'job'
last_seen: '2026-09-10'
---

# Senior Software Engineer, C++ at Flow Traders

- **Company:** Flow Traders
- **Location:** London, United Kingdom
- **Posted:** 2026-06-25
- **Last confirmed live:** 2026-09-10
- **Apply:** https://job-boards.greenhouse.io/flowtraders/jobs/8027843

## Job description

Flow Traders is looking for a Senior C++ Software Engineer to lead the next-generation architecture of the market data and execution platforms that power our fully systematic trading. We don't treat market data as plumbing - for us it's a source of alpha, where feed handling, order book construction, and a deep understanding of exchange microstructure are themselves a competitive edge. We're looking for a senior individual contributor who has lived this philosophy in a proprietary or systematic trading environment and can squeeze every nanosecond out of the path from wire to strategy.

As a senior individual contributor, you'll help set the technical direction for the Core Platform that underpins quantitative research, pricing, strategy development, and execution across hundreds of venues - and drive its global rollout across our Market Data, Quant Research, Pricing, and Strategies groups. You'll work in a tight, iterative loop with quants and technical traders, applying deep expertise in modern C++, OS internals, CPU and memory architecture, lock-free concurrency, and low-latency networking to push our systems toward state-of-the-art performance, robustness, and observability.

What you will do:

- Lead the development and global rollout of our Core market data platform used across multiple focus areas (Market data, Research engineering, Pricing, Strategies).
- Design and implement high‑performance components for market data ingestion, normalization, and distribution, as well as its usage for order execution and strategy infrastructure.
- Develop tools and frameworks that enable quants and technical traders to build, tune, and deploy data‑driven systematic pricing and trading strategies.
- Own the full lifecycle of your components in a fast‑paced, iterative environment: deploy, monitor, profile, and optimize your code in production.
- Work closely with focus group engineers, quants, and technical traders to refine requirements, collect feedback, and iterate on the platform's design and implementation.

What you need to succeed:

- BSc, MSc, or PhD in Computer Science, Mathematics, or a related field.
- 7+ years of post‑graduation professional C++ software development experience.
- Experience building low‑latency market data ingestion, order execution, and algorithmic trading systems (proprietary trading industry preferred).
- Strong knowledge of algorithms and data structures.
- Experience in parallel, asynchronous, and multithreaded programming.
- Demonstrated ability to write clean, reliable, and highly scalable C++ code.
- Interest in extracting maximum performance from available hardware and software (CPU caches, memory layout, networking, etc.).
- Ability to communicate effectively with both technical and non‑technical colleagues.

Flow Traders does not accept unsolicited resumes from any professional staffing or search firms. All resumes, and any other information identifying potential candidates, submitted to any employee at Flow Traders via email, the Internet or directly without a valid and signed search agreement will be deemed free to contact by Flow Traders without any restrictions and no placement fee of any kind will be paid in the event the candidate is hired by Flow Traders

## About Flow Traders

## Company Overview
- **One-liner**: Flow Traders is a global technology-enabled liquidity provider and market maker that enhances efficiency and transparency across financial markets.
- **Entity Type**: Public (Euronext Amsterdam: FLOW)
- **Headquarters**: Amsterdam, Netherlands
- **Founded**: 2004
- **Founders**: Not publicly available

## Core Business
- **Primary industries**: Financial services, electronic trading, market making, liquidity provision
- **Target customers**: Institutional investors, exchanges, trading platforms (B2B)
- **Mission statement**: “To enhance the seamless functioning and accessibility of markets, in order to unlock the potential of investing.”

## Products & Services
- **Exchange-Traded Products (ETP) Market Making**: Core business – providing continuous liquidity on ETPs across global exchanges.
- **Fixed Income Trading**: Expanded into fixed income in 2021.
- **Foreign Exchange (FX) & Digital Assets**: Added FX and digital assets capabilities to diversify product range.
- **Off-Exchange Trading**: Proprietary off-exchange trading offering launched in 2017.
- **Investment Unit**: Dedicated investment unit launched in 2022 to invest in the financial ecosystem.

## Market Standing
- **Valuation/Market Cap**: Not disclosed in provided sources; publicly listed on Euronext Amsterdam (ticker: FLOW).
- **Key Metric**: Total income of €480.5 million in 2025 (Annual Report 2025).
- **Notable Investors/Partners**: Not explicitly listed, but the firm has a strong institutional client base and holds licenses such as QFII for on-shore trading in China.
- **Growth Signals**: 
  - Over 630 professionals globally (2025).
  - Expanded into fixed income, FX, and digital assets.
  - Opened offices in Chicago, Shanghai, Paris, Hong Kong, Milan, New York, and Cluj (technology development).
  - Over 40% of workforce in Technology.
  - 10-year public company milestone in 2025.

## Competitive Advantages
- **Technology-driven**: Proprietary, best-in-class trading infrastructure; over 40% of employees in Technology.
- **Global reach**: Trading hubs in Europe, the U.S., and Asia-Pacific providing 24-hour liquidity across major exchanges and platforms.
- **Entrepreneurial culture**: Flat, informal environment with direct communication and a 20+ year track record of innovation.
- **Diversification**: Expanded from ETPs into fixed income, FX, digital assets, and off-exchange trading, reducing reliance on any single asset class.

## Strategic Focus
- **Continued diversification**: Deepening presence in digital assets, fixed income, and FX.
- **Technology investment**: Building next-generation solutions to power trading and maintain competitive edge.
- **Geographic expansion**: Strengthening on-the-ground presence in key financial hubs (Chicago, Shanghai, etc.).
- **Ecosystem investment**: Through the dedicated investment unit, supporting innovation in the broader financial ecosystem.

## Why Work Here
- **Culture**: International, diverse, and empowering; informal with open communication; entrepreneurial spirit.
- **Technology focus**: Over 40% of staff in Technology; opportunity to work on cutting-edge trading systems.
- **Global opportunities**: Global Rotation Program allowing employees to work in different locations (Amsterdam, New York, Hong Kong, etc.).
- **Compensation**: Attractive package including base salary and discretionary variable component.
- **Perks**: Annual company trip, holiday parties, sports events, wellness programs, healthy food, and charity initiatives through the Flow Traders Foundation.
- **Learning & Development**: Dedicated learning platform, conference sponsorship, and specialized onboarding for Trading and Technology teams.
- **Visa sponsorship**: Provided for international candidates (including partner/children); relocation assistance offered.
- **Offices**: Vibrant workspaces with lounges, bars, gaming areas, and free lunches/coffee.

## Sources
1. [flowtraders.com - About](https://www.flowtraders.com/about/)
2. [flowtraders.com - Careers](https://www.flowtraders.com/careers/)
3. [flowtraders.com - Annual Report 2025](https://flowtraders.com/media/2s2pdl01/flow-traders-annual-report-2025.pdf)
4. [greenhouse.io - Flow Traders Jobs](https://boards.greenhouse.io/flowtraders)

## Other roles at Flow Traders

- [Risk Manager](https://feeny.ai/job/risk-manager-flow-traders-hong-kong-2jqyd1rxzz7r) — Hong Kong, China
- [Junior Quantitative Researcher](https://feeny.ai/job/junior-quantitative-researcher-flow-traders-new-york-xnxpkq9m4359) — New York, NY
- [Experienced Quantitative Researcher](https://feeny.ai/job/experienced-quantitative-researcher-flow-traders-new-york-aqwf2cgsbrgj) — New York, NY
- [Software Engineer (Trading Automation)](https://feeny.ai/job/software-engineer-trading-automation-flow-traders-new-york-fpvkbjwavskf) — New York, NY
- [Global Head of Operations and Middle Office](https://feeny.ai/job/global-head-of-operations-and-middle-office-flow-traders-amsterdam-wbkwh0jhwhqm) — Amsterdam, Netherlands
- [Talent Pool: Trading Systems Engineer](https://feeny.ai/job/talent-pool-trading-systems-engineer-flow-traders-new-york-jstr4581k5qk) — New York, NY
- [Engineering Manager - Research Engineering](https://feeny.ai/job/engineering-manager-research-engineering-flow-traders-london-p05g77hxmmgc) — London, United Kingdom
- [Engineering Manager - Research Engineering](https://feeny.ai/job/engineering-manager-research-engineering-flow-traders-amsterdam-p5v2bct31hpm) — Amsterdam, Netherlands
- [Staff Enterprise Engineer](https://feeny.ai/job/staff-enterprise-engineer-flow-traders-amsterdam-mvxt2mmp74fe) — Amsterdam, Netherlands
- [Trading Intern](https://feeny.ai/job/trading-intern-flow-traders-hong-kong-4vm1t6hk1gwa) — Hong Kong, China