Senior Integrations Software Engineer - Trading Platform

Finalto; København; On-site; DKK 900,000 - 1,100,000; Full time

Job summary

Finalto in Copenhagen is seeking a Senior Software Engineer to join the Integrations Team. You will own end-to-end integration work with clients, Tier 1 banks, liquidity providers, and trading venues, building robust services for the ClearVision platform.

The role emphasizes learning unfamiliar systems, designing dependable components, and delivering high-quality, low-latency software. Onsite work at Amerikakaj (Copenhagen) is required for a minimum of 60% to align the team.

Qualifications

• Degree in computer science or software engineering, or equivalent experience.
• 5+ years of professional software development experience, including production software in C#/.NET or a comparable object-oriented language.
• Ability to structure ambiguous work, make sound trade-offs, and design maintainable components.
• Experience owning third-party integrations and managing external technical stakeholders through joint problem solving.
• FIX or electronic-trading experience is a plus, not a requirement.
• Strong knowledge of OOP, SOLID, data structures, algorithms, network protocols, testing, observability, and production reliability.

Responsibilities

• Own integration work and develop/maintain services connecting ClearVision with clients, Tier 1 banks, liquidity providers, and trading venues.
• Work directly with third parties to clarify behaviour, coordinate testing and investigation, and drive joint issues to resolution.
• Deliverables must meet high standards of correctness, latency, performance, and reliability.

Skills

C#/.NET

Distributed systems

Unit testing

OOP

SOLID principles

Problem solving

Education

Degree in computer science or software engineering

Tools

Git

Visual Studio

MSBuild

NUnit

Job description

Finalto in Copenhagen is seeking a Senior Software Engineer to join the Integrations Team. You will own end-to-end integration work with clients, Tier 1 banks, liquidity providers, and trading venues, building robust services for the ClearVision platform.

The role emphasizes learning unfamiliar systems, designing dependable components, and delivering high-quality, low-latency software. Onsite work at Amerikakaj (Copenhagen) is required for a minimum of 60% to align the team.