Senior Software Engineer developing reliable, scalable, and secure payment flows integrated with core banking. Join Luminor to build a local banking champion in Estonia.
About the role
- Senior Software Developer evolving C# Windows services for Aspire Software in Lebanon. Collaborating with the CTO and senior developers on AI-focused projects.
Responsibilities
- Maintain and evolve the C# Windows services deployed at client sites (stability, performance, compatibility, robustness).
- Add the improvements needed to increase visibility and control over a distributed fleet of client-side services:
- Improve observability and incident resolution in production (log analysis, reproduction, fixes, post-mortems).
- Collaborate with other Dentitek components (PowerBuilder, SQL Anywhere DB, Postgres cloud, API) to ensure consistent and reliable integration.
- Assess the current state of the services and their ecosystem (architecture, technical debt, deployment, supportability).
- Propose a systematic modernization plan: refactoring and standardization (patterns, error handling, resilience); automated testing and tooling/CI/CD adapted to the on-prem context; security hardening and configuration best practices; evolution strategies (e.g., modern .NET, compatibility, packaging, installation, telemetry).
- Participate in the proposition of alternative solutions and migration plans to (or a target architecture) with a pragmatic roadmap (phases, risks, client impacts, backward compatibility)
Requirements
- Bachelor’s degree in computer science, engineering, or a combination of relevant expertise;
- Strong senior-level experience in C# / .NET and Windows services development (Worker Services, Windows Service, scheduling, background processing).
- Experience (high motivation) with AI development support tools (e.g. GitHub Copilot, Codex, ChatGPT)
- Solid production mindset: troubleshooting, performance, concurrency (threads/tasks), memory management, error handling and recovery.
- Experience with relational databases and SQL (ideally SQL Anywhere and/or PostgreSQL).
- Strong knowledge of Git and Git workflows;
- Experience with Agile development methodologies (e.g. Scrum, Kanban)
- Problem-solving attitude;
- As a senior with assigned responsibilities: Demonstrate initiative and autonomy;
- Collaborative team spirit;
- Ability to work in English.
- **Nice To Have**
- Experience with observability (structured logging, metrics, tracing) and monitoring/alerting tools.
- Experience with distributed on-prem environments (client deployments, network constraints, heterogeneous versions).
- Experience modernizing legacy systems and planning migrations (phased rollout, coexistence, backward compatibility).
- Experience with application and/or network security.
- Experience (or strong motivation) using AI tools to support development.
- Ability to work in French
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
Tech skills
Location requirements
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