Senior Software Development Engineer II (Backend)

Filevine is a Legal AI company delivering Legal Operating Intelligence for the future of legal work. Grounded in a singular system of truth, Filevine brings together data, documents, workflows, and teams into one unified platform—where modern legal work happens with clarity and consistency.

Powered by LOIS , the Legal Operating Intelligence System, Filevine connects context across every matter to transform legal operations from reactive to proactive. LOIS reads, understands, and reasons across your data to surface insight, automate complexity, and give professionals the clarity and confidence to see more, know more, and do more. Fueled by a team of exceptional collaborators and innovators, Filevine’s rapid growth has earned AI awards and recognition from Deloitte and Inc. as one of the most innovative and fastest-growing technology companies in the country.

Role Summary:

Join a high-impact engineering team innovating on a brand-new product inside Filevine , creating mission-critical systems that redefine how justice is served—using cutting-edge .NET Critter Stack (MartenDB and Wolverine), Domain-Driven Design, and event-driven architecture to solve complex, real-world problems at scale.

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.

Qualifications:

• 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.