Senior Software Development Engineer II (Backend)

Filevine is a Legal AI company delivering Legal Operating Intelligence for legal work through its unified platform and the LOIS system. The company is hiring a senior backend engineer to help build a new product using .NET, Domain-Driven Design, event sourcing, and PostgreSQL, with responsibilities spanning architecture, feature delivery, performance optimization, and mentoring.

Responsibilities:

• Architect and implement sophisticated legal domains using Domain-Driven Design (DDD), defining bounded contexts, aggregates, domain events, and a shared ubiquitous language
• Model resilient, event-sourced systems with Marten, leveraging multi-document sessions, projections, and tenanted document storage in PostgreSQL
• Design and deliver asynchronous, idempotent message handlers using Wolverine, with built-in retry policies, dead-letter queues, and full observability
• Optimize PostgreSQL performance under high-throughput workloads using indexing, partitioning, and query tuning
• Drive end-to-end feature ownership—from domain modeling and REST API design to CI/CD automation, observability, and production monitoring
• Establish and enforce engineering excellence through code reviews, architectural decision records (ADRs), and comprehensive test coverage (unit, integration, contract)
• Build in enough resiliency or be prepared to troubleshoot and resolve the technical issues, no matter the hour
• Mentor mid-level and junior engineers in DDD strategic patterns, clean architecture, and modern .NET best practices
• Partner with product, UX, and legal domain experts to translate complex workflows into intuitive, high-performance software
• Actively shape shared domain models and architecture decisions in cross-team design syncs, sprint planning, and design document reviews
• Clearly articulate technical trade-offs and domain models to engineers, product leaders, and stakeholders
• Actively contribute in design discussions, sprint planning, and cross-team syncs with empathy and respect

Requirements:

• 5+ years of backend development with expert-level C# and .NET 8+
• Production-grade mastery of Domain-Driven Design (strategic + tactical patterns)
• Deep, hands-on experience with MartenDB and Wolverine (.NET Critter Stack)
• Strong grasp of CQRS, event sourcing, and PostgreSQL performance optimization
• Experience in legal tech, workflow automation, or regulated industries
• Familiarity with OpenTelemetry or other observability platforms
• Familiarity with Svelte, TypeScript, and frontend development
• Familiarity with Auth0 and OktaFGA
• Exceptional communication—able to explain complex domain logic to non-technical stakeholders
• Growth mindset, collaborative spirit, and passion for mentorship
• Proven ability to independently drive high-impact initiatives to completion under ambitious timelines