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Japan Tobacco · Bucharest, RO

# Senior Software Engineer

Bucharest, RO Senior individual contributor Software Engineering 

Listed on Japan Tobacco’s official careers site. Posted October 19, 2026. Check that it is still open and apply there.
[Apply on Japan Tobacco’s careers site →](https://jobs.jti.com/job/BUCHAREST-Senior-Software-Engineer-020339/1388308333/)

[OpenNash Jobs](https://jobs.opennash.com/) / [Japan Tobacco](https://jobs.opennash.com/companies/japan-tobacco/) / Senior Software Engineer

## Job description

Senior Software Engineer What this role is about? You will design, build and operate modern cloud-based systems on the Microsoft stack, with a focus on.NET, Azure and GitHub. This role requires strong ownership across the full lifecycle: problem framing, system design, implementation, deployment and production operations. You’ll work on scalable, secure and maintainable systems, applying solid engineering fundamentals and using tools like GitHub Copilot pragmatically to accelerate delivery without compromising quality.

What will you do?
- Build and evolve backend services and APIs using.NET, C#, and ASP.NET Core
- Build and contribute to frontend experiences using React and TypeScrip
- Design systems for scalability, resilience, security and maintainability
- Make and drive technical decisions, balancing trade-offs and constraints
- Own services in production, including deployment, monitoring, troubleshooting and continuous improvement
- Apply clean architecture, design patterns, automated testing and code quality practices
- Work with Azure services across compute, storage, messaging, identity, and monitoring to build cloud-based solutions
- Collaborate closely with engineers, architects, product owners, and other stakeholders to deliver working software
- Review code, challenge assumptions and help raise the engineering bar Use AI-assisted tools, such as GitHub Copilot, effectively for coding, testing, analysis, and documentation What are we looking for?
- Strong experience building and operating software systems in production Deep hands-on expertise with.NET, C#, and ASP.NET Core
- Solid understanding of APIs, distributed systems and integration patterns
- Proven experience with Azure and cloud-based application architecture
- Strong grasp of system design, design patterns, performance, reliability, and security Experience with automated testing, including unit and integration testing
- Ability to debug complex issues across services and environments Experience with frontend development using TypeScript and React, or willingness to work across the stack when needed Clear communication and ability to work effectively in cross-functional engineering teams Fluency in English Nice to have Frontend experience with TypeScript and React Infrastructure as Code experience, preferably with Bicep Experience with observability, including logging, metrics, tracing and production diagnostics Experience with containerized workloads or cloud-native application platforms Experience using AI-assisted development tools in real engineering workflows What are the next steps – Recruitment Process: Thank you very much for your interest in the role.

We will make sure every candidate will receive a reply within 2 weeks after the application deadline.

## At a glance
- Posted by the employer: Oct 19, 2026
- First seen by OpenNash: Oct 19, 2026
- Last checked: Oct 19, 2026
- Listed for: Under a day
- Location: Bucharest, RO[Apply on Japan Tobacco’s careers site →](https://jobs.jti.com/job/BUCHAREST-Senior-Software-Engineer-020339/1388308333/)

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Dates come from the employer where stated; “first seen” and “last checked” are our own observations.

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