Polaris Advisors is a technology and professional services firm connecting skilled professionals across Latin America with opportunities to work with leading U.S.-based organizations. We focus on building strong technical teams and creating long-term partnerships between our consultants and clients.
About Our Client
Our client is a U.S.-based technology organization undergoing a significant backend modernization initiative. The team is transitioning existing .NET services to modern Java/Spring Boot architecture while maintaining system stability, API compatibility, and production performance.
This is an opportunity for engineers who enjoy understanding complex legacy systems and modernizing them thoughtfully, not simply replacing code, but ensuring the new platform behaves reliably in production.
About the Role
We are looking for Backend Developers with strong hands-on experience in both .NET and Java to join a large-scale backend migration initiative.
You will reverse-engineer existing .NET services, design equivalent Java/Spring Boot services, rebuild persistence layers,
preserve API contracts, and establish automated testing to prove behavioral parity between the old and new systems.
What You’ll Do
- Reverse-engineer existing C#/.NET services, APIs, and data access layers, including undocumented behavior and edge cases.
- Design and build equivalent services using Java and Spring Boot.
- Migrate systems incrementally while allowing legacy and modern services to run side by side.
- Preserve existing REST API contracts and integrations.
- Rebuild SQL Server persistence layers, stored procedures, and Entity Framework mappings using JPA/Hibernate.
- Develop automated unit, integration, and contract tests to validate behavioral parity.
- Own CI/CD, containerization, and deployment of backend services.
- Participate in architecture and technical design decisions.
- Mentor other engineers and contribute to reusable migration patterns and best practices.
Required
📌 Back End Developer (Colombia)
🏢 Polaris Advisors
📍 Colombia
Postulate a este anuncio
Muestra tus habilidades a la empresa, rellenar el formulario y deja un toque personal en la carta, ayudará el reclutador en la elección del candidato.