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Sr. C# Backend Engineer - Solution Architect Role (4k to 4.5k USD/mo + Bonuses) at Smart Apartment Data. We are seeking a . senior-level backend engineer. who is both a strong coder and comfortable with architecture-level decisions. You’ll design and scale systems that power our data platforms, working closely with experienced engineers in a fully remote environment.. Smart Apartment Data. , a five-star employee-rated company and Best & Brightest Companies to Work For winner, is on the cutting edge of Big Data in real estate. We offer a fun, collaborative environment, generous pay with bonuses, and a strong work-life balance. Watch this short video to meet our hiring team: . https://vimeo.com/1057933773/3260b5ba8b. About Us:. For 20+ years, we’ve been the market leading in big data analytics for U.S. —empowering brokers, investors, and analysts with real-time market intelligence.. Sneak peek of projects:. Big Data Orchestration. Data Warehousing in SQL Server & NoSQL. API Design with C# 13 / .NET 9. .  . 5+ years of professional backend development in C#/.NET. Fluent in English, with clear and collaborative communication. Hands-on experience with concurrency, multi threading, and asynchronous programming. Proven background in designing and scaling APIs and distributed systems. Strong knowledge of SQL and NoSQL databases at scale. Comfortable contributing both to system design (Solution Architect focus) and day-to-day coding. Nice to Have:. Experience with cloud platforms (AWS preferred). Background in enterprise-level projects or large-scale data systems. Company Location: Poland.