Sr. Software Engineer

Sr. Software EngineerTheoris Services is assisting our client in their search for a Sr. Software Engineer to add to their growing team. We are seeking someone who thrives in complex enterprise environments and enjoys investigating production issues, tracing application behavior, identifying root causes, and delivering sustainable solutions. This engineer will serve as the technical leader of a focused six-month initiative responsible for reducing a critical compliance backlog while partnering closely with Product, Compliance, QA, and Engineering stakeholders. The ideal candidate combines strong.NET development expertise, production support experience, deep troubleshooting skills, and the ability to navigate complex legacy systems. This is not a greenfield development role. Success requires curiosity, analytical thinking, and the ability to untangle complicated business and technical workflows. Responsibilities: Lead investigation and resolution of complex compliance-related defects and enhancements Analyze production issues, application behavior, database interactions, and system integrations Perform root-cause analysis and recommend durable corrective actions Design and implement solutions within a mature enterprise application environment Partner with Product, Compliance, and business stakeholders to understand requirements and regulatory impacts Mentor and guide other engineers assigned to the engagement Support backlog refinement and technical estimation activities Review code and ensure adherence to quality and maintainability standards Document findings, design decisions, and implementation approaches Participate in testing, deployment, and validation activities Requirements: 7+ years of software engineering experience Strong expertise with.NET and C# Strong SQL Server skills including query optimization, stored procedures, data analysis, and troubleshooting Experience supporting and enhancing production systems Demonstrated success investigating and resolving complex application defects Experience working within legacy or highly integrated enterprise applications Strong debugging, logging, and diagnostic skills Ability to work independently in ambiguous technical environments Excellent written and verbal communication skills Desired: Experience with insurance, lending, mortgage servicing, financial services, or compliance-driven systems Experience with batch processing, workflow engines, integrations, or matching systems Azure DevOps or Jira experience Experience supporting regulated environments Automated testing experience Prior technical leadership or mentoring responsibilities Be daily users of tools such as Cursor, Claude Code, GitHub Copilot, or similar platforms Follow spec-driven development practices before utilizing AI agents Use AI to accelerate analysis, code generation, testing, and documentation Critically evaluate AI-generated output for correctness, security, maintainability, and performance Best-In-Class-Benefits: We are in the people business; treating people right is our ONLY priority. Theoris Services consultants are full-time employees with full benefits, including: Robust Health Insurance PTO Paid holidays 401(k) plan About Theoris: Our goal is to Fuel Your Career! As a Theoris team member, you join a culture based on people-centered values and an environment that fosters both personal and professional growth. We build long-term relationships with our clients and our consultants. With over 30 years of building strong relationships in the industry, we're uniquely positioned to make the right connections. This knowledge is used to find the right job placement. Our recruiting teams are experts dedicated to the information technology and engineering staffing space and are highly respected by our client base.