> Markdown version of [/jobs/ext/2719982-backend-engineer](https://www.wearedevelopers.com/jobs/ext/2719982-backend-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Backend Engineer - **Company:** BLACKBIRD LABORATORIES INC. - **Location:** New York, United States - **Experience:** Expert - **Salary:** $180,000.0 - $220,000.0 - **Contract:** Permanent contract - **Skills:** Abstraction Layers, Amazon Web Services, Software Quality, Databases, DevOps, Hibernate (Java), Spring Framework, Performance Tuning, Blockchain, SQL Databases, Systems Architecture, Retrieval-Augmented Generation, Prompt Engineering, Backend, Kotlin, Restful APIs, Terraform, Domain Driven Design, Web Api - **Published:** September 4, 2026 - **Apply:** https://startup.jobs/senior-staff-backend-engineer-blackbird-labs-inc-7847275 ## About the Role * 5+ years of experience building and deploying backend APIs * Strong proficiency in Kotlin or another statically typed JVM language * Deep experience designing and maintaining RESTful APIs using domain-driven design principles * Solid understanding of SQL databases, including schema design and performance tuning * Strong attention to detail and commitment to delivering high-quality user experiences * Ability to work autonomously and make sound decisions in a fast-moving environment * Experience mentoring engineers and contributing positively to team culture * Comfortable working cross-functionally with product, design, and other stakeholders Nice to Haves * Experience with the Spring framework and database abstraction layers such as Hibernate * Familiarity with the U.S. payments ecosystem, including debit, credit, and ACH processing * Exposure to DevOps practices, including AWS infrastructure and Terraform * Interest or experience in blockchain, especially with cryptography fundamentals * Experience productionizing generative AI features (e.g. retrieval-augmented generation, prompt engineering, or model integration) ## Description As a Senior Backend Engineer, you'll be responsible for designing, developing, and maintaining our core APIs. You'll work closely with product managers, designers, and fellow engineers to define and execute the technical vision behind our payments and loyalty platforms. You'll contribute to key architectural decisions, help establish engineering best practices, and play a critical role in scaling the platform. We're looking for someone who thrives in a fast-paced, high-ownership environment and is excited to build products from the ground up., * Design, build, and maintain core backend APIs * Collaborate with product, design, and engineering peers to deliver features aligned with business goals * Contribute to system architecture and implement scalable, robust solutions * Uphold and promote backend best practices, with a focus on code quality, testing, and performance * Mentor junior and mid-level engineers and foster a collaborative, growth-oriented team culture * Participate in product and design discussions, offering backend perspectives on implementation and feasibility ## Related Videos - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse) - [Web APIs you might not know about](https://www.wearedevelopers.com/videos/281-web-apis-you-might-not-know-about) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [Back(end) to the Future: Embracing the continuous Evolution of Infrastructure and Code](https://www.wearedevelopers.com/videos/440-back-end-to-the-future-embracing-the-continuous-evolution-of-infrastructure-and-code) - [DevOps Maturity Check – a way to balance autonomy and alignment](https://www.wearedevelopers.com/videos/58-devops-maturity-check-a-way-to-balance-autonomy-and-alignment) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [20 Essential Tools For Backend Development](https://www.wearedevelopers.com/magazine/218-20-essential-tools-for-backend-development) - [Basic And Advanced Networking in Dart and Flutter](https://www.wearedevelopers.com/magazine/112-basic-and-advanced-networking-in-dart-and-flutter) - [The 7 Most Popular Backend Frameworks for Developers](https://www.wearedevelopers.com/magazine/403-the-7-most-popular-backend-frameworks-for-developers) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)