Flow traders

Actively Hiring

Senior Software Engineer

Amsterdam, Netherlands

Full-time

Role Overview

We are looking for a Senior Software Engineer who can take ownership of complex problems from discovery through production, designing and delivering a new OTC Trading Engine and modernising existing applications.

About Flow traders

Flow Traders is transforming its institutional trading platform across Equities, ETFs, Fixed Income, and Crypto.

Key Responsibilities

HYRX

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Senior Software Engineer at Flow traders | HYRX

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

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

Develop high-performance services, data pipelines, and integrations across Java, C++, and Python environments

Requirements & Eligibility

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

Required Skills & Tech

JavaC++PythonKafkaKubernetesDockerGCPBigQuery

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Role Highlights

Posted Date

26 Oct 2026

Experience

Several years of experience