Software Engineer - Backend

Vesta is focused on transforming the mortgage industry by building a fully automated platform for loan origination. The Software Engineer - Backend will work closely with product and engineering teams to design and operate scalable backend systems that support customer-facing features.

Responsibilities:

• You’ll work alongside full-stack engineers, bringing deep backend and systems expertise to ensure the product functionality we build is scalable and reliable
• You will be partnering closely with product and engineering teammates to design, build, and operate backend systems that directly support customer-facing features as they grow in complexity and usage
• You’ll be expected to take ownership of the backend and systems aspects of product features from early design through production and scale to ensure the product continues to perform reliably as the business grows

Requirements:

• Comfortable working in an early-stage startup environment where mission-critical work may occasionally require effort outside typical working hours
• Experience building and operating production-grade distributed systems that support real product functionality at meaningful scale
• Strong backend engineering focus; full-stack experience is welcome, but deep systems and backend expertise is essential
• Hands-on experience working with multi-service architectures in a production environment
• Ownership of performance, reliability, and scalability work tied directly to product features (e.g., query optimization, indexing, identifying and resolving system bottlenecks)
• Fluency in using modern AI tooling as part of your development workflow
• Proficiency in at least one strongly typed backend language (C#, Java, Kotlin, Go, or similar)
• Hands-on experience with relational databases, preferably PostgreSQL, including schema design and performance tuning
• Familiarity with cloud-based production environments (AWS preferred), and experience with technologies such as Kafka, Redis, or similar infrastructure components
• Strong systems design instincts, with the ability to reason about scalability, performance, and reliability tradeoffs as product features evolve
• Comfortable operating with a high degree of autonomy, owning backend responsibilities end-to-end while collaborating closely with full-stack engineers
• Strong bias toward building practical, iterative solutions to real business problems, with minimal process overhead or unnecessary meetings
• Willingness to travel a few times per year for team offsites within the United States