Senior Software Engineer - OTC Trading

Flow TradersAmsterdamHybridFull-time2 days ago

Flow Traders is seeking a Senior Software Engineer to join its OTCTECH team in Amsterdam. The role involves designing and delivering a new OTC Trading Engine, modernising existing applications, and building reliable, high-performance trading systems. Requires strong experience in distributed backend systems, expertise in Java or C++, and working knowledge of Python.

What you'll do

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.
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.
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

Must-have

JavaC++PythonApache KafkaDistributed SystemsConcurrencyEvent-Driven ArchitectureMessaging Platforms

Nice-to-have

TradingCapital MarketsFinancial ServicesGoogle Cloud Platform (GCP)KubernetesDockerCloud-Native TechnologiesBigQuery

Soft skills

Stakeholder ManagementCommunicationOwnershipProblem SolvingTechnical Judgment

Senior Software EngineerOTC TradingFintechCapital MarketsJavaC++PythonDistributed SystemsEvent-Driven ArchitectureHybrid

/What you'll do

/What you need

Must-have

Nice-to-have

Soft skills

What you'll do

What you need