---
title: 'Senior Software Engineer - OTC Trading at Flow Traders'
canonical: 'https://feeny.ai/job/senior-software-engineer-otc-trading-flow-traders-amsterdam-1gwrsdc3xk7z'
type: 'job'
last_seen: '2026-10-29'
---

# Senior Software Engineer - OTC Trading at Flow Traders

- **Company:** Flow Traders
- **Location:** Amsterdam, Netherlands
- **Posted:** 2026-10-26
- **Last confirmed live:** 2026-10-29
- **Apply:** https://job-boards.greenhouse.io/flowtraders/jobs/8324146

## Job description

Flow Traders is transforming its institutional trading platform across Equities, ETFs, Fixed Income, and Crypto. As part of OTCTECH, you will work directly with traders, quants, Operations, Risk, and Compliance to design and deliver a new OTC Trading Engine, automate operational workflows, and modernise existing applications into reliable, maintainable systems.

We are looking for a Senior Software Engineer who can take ownership of complex problems from discovery through production. You will need to understand how trading activities and data flow across systems, define clear technical boundaries, make sound architectural decisions, and build solutions that perform reliably in a demanding environment.

This role combines greenfield platform development with the opportunity to understand and evolve an established technology estate. It is grounded in strong engineering fundamentals, with quality, correctness, operational resilience, and clear technical judgment at its foundation.

## What you will do

Understand the Trading Domain

- Work directly with traders, quants, Operations, Risk, and Compliance to understand requirements and how trading workflows operate in practice.
- Trace business processes and data flows across pre-trade research, execution, post-trade processing, risk, and compliance.
- Identify opportunities to improve resilience, consistency, automation, and operational efficiency.
- Build a shared understanding of system responsibilities, dependencies, and operational considerations.
- Design and Modernise the Platform Help design and deliver a new OTC Trading Engine spanning Equities, ETFs, Fixed Income, and Crypto.
- Define appropriate service boundaries, data models, interfaces, and event flows.
- Modernise existing applications where new business or engineering requirements create opportunities for improvement.
- Make and document architectural decisions, balancing performance, reliability, simplicity, and delivery speed.
- Design greenfield services and platforms that can be operated and evolved safely over time.

Build Reliable Trading Systems

- Develop high-performance services, data pipelines, and integrations across Java, C++, and Python environments.
- Build event-driven systems using messaging and pub/sub patterns.
- Engineer for production from the outset, including testing, observability, failure handling, and operational support.
- Embed monitoring, root-cause analysis, and recovery mechanisms so issues are identified and resolved quickly.
- Take ownership of delivery from design and implementation through deployment and production operation.

## What you need to succeed

- Strong experience building and operating distributed backend systems in production
- Expert in Java or C++, with working knowledge of Python
- Strong understanding of distributed systems, concurrency, and scalable system design
- Experience with event-driven architectures and messaging platforms such as Kafka
- Proven track record building high-performance, low-latency systems
- Ability to translate complex business requirements into robust technical solutions
- Ownership mindset with strong stakeholder management and communication skills
- Experience with modern engineering practices including testing, code reviews, observability, and automation
- Comfortable leveraging AI tools to improve productivity while maintaining quality and accountability.

## Nice to have

- Experience in trading, capital markets, or financial services
- Exposure to Google Cloud Platform (GCP)
- Experience with Kubernetes, Docker, and cloud-native technologies
- Knowledge of BigQuery or large-scale data platforms
- Experience working in low-latency, high-throughput environments

## What we offer

At Flow Traders, we create the conditions for hard‑working, high‑performing people to do their best work. From a thorough onboarding and ongoing access to Flow Academy, to latest technology and a collaborative, non‑hierarchical culture, we give you the tools, ownership, and support to move fast and drive outcomes. We keep a close‑knit, small‑company feel while offering competitive salary, annual discretionary profit share, and comprehensive benefits, so talent can grow here, and stay here. See our benefits below:

- Flow Academy and opportunities to attend domain-related conferences
- Daily catered lunch, great coffee, and a fully stocked kitchen and snack bar
- In-house Bar and Lounge with arcade, table tennis, billiards, and game consoles
- Company boat
- In-house gym and sessions with our nutritionist or personal trainer
- Bi-weekly massages
- Annual company trip and a variety of events throughout the year, such as the New Years Event
- Global rotations across our offices worldwide
- and more

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)

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