Senior Software Engineer, OTC Trading Platform

Flow Traders; Amsterdam; On-site; EUR 110,000 - 170,000; Full time

Benefits offered by this job

Flow Academy

Daily catered lunch

Gym

Bi-weekly massages

Company boat

Global rotations

Job summary

Flow Traders in Amsterdam is seeking a Senior Software Engineer to own complex problems from discovery to production. You will work with traders, quants, Operations, Risk, and Compliance to design and deliver a new OTC Trading Engine, and to modernise existing applications.

This role blends greenfield development with evolving a large tech estate, emphasizing reliability, observability, and strong engineering judgment in a fast-paced trading environment.

Qualifications

• Experience building and operating distributed backend systems in production.
• Expert in Java or C++, with working knowledge of Python.
• Experience with event-driven architectures and messaging platforms (e.g., Kafka).
• Strong understanding of distributed systems, concurrency, and scalable design.

Responsibilities

• Understand the trading domain by partnering with traders, quants, Operations, Risk, and Compliance to map requirements and workflows.
• Build high-performance services and data pipelines across Java, C++, and Python; implement event-driven architectures.
• Design and modernise the OTC trading platform with clear service boundaries and robust data models.
• Ensure production-readiness with testing, observability, failure handling, and monitoring.

Skills

Distributed backend

Java or C++

Python knowledge

Kafka

Event-driven

Observability

Automation

AI tools

Ownership mindset

Tools

Kubernetes

Docker

GCP

BigQuery

Flow Traders tech stack

Kafka

Job description

Flow Traders in Amsterdam is seeking a Senior Software Engineer to own complex problems from discovery to production. You will work with traders, quants, Operations, Risk, and Compliance to design and deliver a new OTC Trading Engine, and to modernise existing applications.

This role blends greenfield development with evolving a large tech estate, emphasizing reliability, observability, and strong engineering judgment in a fast-paced trading environment.