Senior Software Engineer .NET (AaaS) | Tallinn, Estonia | Remote
We're working with Riverty on this exciting opportunity. Join a fast-growing fintech organization as a Senior Software Engineer, playing a crucial role in evolving their Azure cloud services and shaping their engineering culture. This is a chance to contribute to innovative accounting solutions and drive technical excellence.
The Role
• Assist in architectural and coding challenges, focusing on migration, refactoring, and modernization of Azure cloud environments.
• Design, build, test, and deploy robust, maintainable, and reliable code and APIs.
• Analyze requirements critically, challenge assumptions, and architect systems aligned with future business needs.
• Drive best practices, standards, and actively shape the engineering culture.
• Participate fully in agile processes, contributing to an outcome-driven approach.
• Mentor team members and set a high standard for quality and architectural thinking.
What You'll Need
• 6+ years of hands-on experience in C#/.NET, with direct contribution to architectural decisions.
• Strategic, outcome-driven experience with cloud platforms, preferably Azure.
• Proficiency in designing RESTful APIs and experience with microservices and distributed architectures.
• Practical exposure to messaging systems like RabbitMQ or Kafka in a production environment.
• Basic experience with frontend JS frameworks, sufficient for communication and prototyping.
• Ability to challenge assumptions, prioritize ruthlessly, and defend technical choices.
• Strong written and spoken English skills.
What's On Offer
• Be part of a dedicated development team in a rapidly growing fintech company.
• Contribute to the technical evolution of innovative "Accounting as a Service" products.
• Collaborate in a dynamic environment that values architectural thinking and quality.
• Opportunity to influence and shape engineering culture and best practices.
Apply via Haystack today!
Key Skills
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- Posted
- Feb 23, 2026
- Type
- Full-time
- Level
- Mid-Senior
- Location
- Tallinn
- Company
- Haystack
Industries
Categories
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3 roles aligned with this opportunity
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2026-05-28
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