Senior Software Engineer (Collateral Exchange Platform, DLT)

Quick Facts

• Contract (B2B) • 6 months + extensions
• Full-time • 100% remote
• Language: English (fluent)
• Occasional participation in an on-call rotation for the production platform

Description

Build core components of a production-grade financial technology platform handling complex, real-time transactions. The platform combines modern JVM technologies with distributed systems and Distributed Ledger Technology. You’ll implement business logic and workflows, develop secure and resilient services, and contribute to DLT components.

Responsibilities

• Design and develop core components of a highly transactional financial platform
• Implement complex business logic and workflows
• Build resilient, secure, and maintainable JVM services
• Work with message-driven and distributed architectures
• Develop integrations using APIs, messaging, and financial communication protocols
• Contribute to Distributed Ledger components and workflows
• Solve concurrency, data consistency, and transactional problems
• Participate in architectural assessments and threat-modelling sessions
• Collaborate with Developers, DevOps Engineers, and QA Engineers across several countries
• Support a production-grade system and occasionally participate in the on-call rotation
• Ensure high standards of correctness, security, resilience, confidentiality, and operational stability

Requirements

• Ideally 6+ years of professional software engineering experience
• Very strong commercial experience with Java and the JVM ecosystem
• Excellent understanding of core computer science concepts
• Strong knowledge of object-oriented software design and engineering principles
• Experience building complex, production-grade backend systems
• Understanding of databases and transactional systems
• Experience with concurrency and multithreading
• Knowledge of message-driven or event-driven architectures
• Strong analytical and problem-solving skills
• Master’s degree in Computer Science or closely related technical field (strongly preferred)
• English fluency

Benefits

• Work on mission-critical financial technology in an international engineering team
• Build distributed, message-driven JVM services with DLT-focused components
• Contract position with potential extensions

Technical Stack

• Java, JVM, Kotlin, Spring Boot
• ActiveMQ
• Gradle, Docker, Kubernetes, Ansible
• Relational databases
• APIs and external system integrations
• Canton, Daml, Distributed Ledger Technology
• SWIFT-based financial integrations