Staff Software Engineer

Application deadline: December 20, 2026. Applications will be reviewed on a rolling basis, and the deadline may be extended. 

About the role 

We're looking for a Staff Software Engineer to help shape the future of our platform and guide the technical decisions that will support its continued growth. 

This is a role for an experienced engineer who thrives on complexity, brings clarity to ambiguous problems and can translate business priorities into sound architectural decisions. You'll influence technical direction across teams, establish engineering standards and help others make better decisions, while remaining close enough to the technology to challenge assumptions and guide implementation. 

This is a full-stack position with a strong backend focus (approximately 75% server-side C#/.NET and 25% frontend across our WPF desktop and React web applications).

What you'll be doing 

• Set technical direction: Establish architectural principles and guide the evolution of your team's systems, ensuring technical decisions support both immediate priorities and long-term business objectives. 

• Navigate complexity: Take ownership of ambiguous, high-impact problems, bring structure to competing priorities and make informed decisions even when information is incomplete. 

• Shape the architecture:
  Determine how systems and services should be structured, balancing scalability, maintainability, performance and operational cost. Know when to introduce new capabilities and when simpler solutions are better. 

• Protect financial integrity: Define and champion the standards that ensure critical calculations and financial processing are accurate, consistent, traceable and capable of standing up to audit and scrutiny. 

• Raise engineering capability: Mentor engineers across the team, encourage strong technical practices, lead by example in design discussions and code reviews, and contribute to hiring and developing engineering talent. 

• Influence beyond engineering: Partner with Product and senior leadership on technical strategy, roadmap priorities and trade-offs. Communicate architectural decisions clearly and represent engineering in client and business discussions. 

• Drive continuous improvement:
  Identify architectural risks, technical debt and opportunities to improve system reliability, performance and engineering efficiency. 

What makes you a great fit 

• Extensive experience designing, developing and operating production software, with a proven track record of influencing technical direction across engineering teams. 

• Deep backend engineering expertise, ideally with C#/.NET, alongside practical knowledge of another area such as data architecture, frontend development or cloud infrastructure. 

• Experience designing systems where data accuracy, consistency and traceability are critical, particularly in financial or similarly complex processing environments. 

• A strong understanding of distributed systems, software architecture, database design, scalability and system performance. 

• Demonstrated ability to mentor engineers, influence technical standards and contribute to recruitment and team development. 

• Confidence making complex technical decisions, explaining trade-offs and gaining alignment across engineering, product and business stakeholders. 

• Strong written and verbal communication skills, including the ability to document architectural decisions and present technical recommendations to senior leadership. 

• Sound judgment in balancing consistency across systems with the flexibility to choose the right solution for individual problems. 

Bonus points if you bring 

• Experience in private markets, fund administration, fund accounting, fintech or regulated financial services. 

• Experience leading significant architectural transformations, platform migrations or service extractions across multiple teams. 

• A track record of producing design documents, technical proposals and RFCs that drive meaningful decisions. 

• Experience participating in client-facing architecture discussions, technical due diligence or strategic technology reviews. 

• Frontend expertise, particularly WPF or React, enabling you to influence decisions across the full technology stack. 

• Experience designing agentic workflows or integrating AI-driven capabilities into products, including understanding where they deliver genuine value. 

• Previous experience in an early-stage or high-growth technology business, where you've helped establish engineering practices and technical foundations. 

Equal Opportunity Employer 

LemonEdge is an Equal Opportunity Employer committed to fair and equitable hiring practices. All employment decisions are based on business needs, job requirements and individual qualifications, without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or any other characteristic protected by applicable law.