Senior Staff Software Engineer - Financial Products (Backend)

The Financial Products team is seeking a Senior Staff Software Engineer (Backend) to join our high-velocity growth group. Our mission is to architect and scale Halcyon Labs's next generation of financial services. As a leader within one of the company's core strategic initiatives, you will be responsible for launching high-impact projects that redefine Halcyon Labs's ecosystem. Your work will directly influence the company's bottom line and shape how millions of users interact with our financial offerings. What You'll Do Architect & Innovate: Partner with Product, Design, and Business leadership to translate ambitious product visions into scalable, high-concurrency backend solutions. Technical Leadership: Serve as the primary technical authority for the team, steering architectural choices, overseeing rigorous code reviews, and ensuring system reliability. Engineering Excellence: Champion and implement industry-best practices for code health, automated testing, and long-term maintainability. Scale Systems: Build and optimize frameworks that support Halcyon Labs's global scale, ensuring financial transactions remain seamless and secure. Basic Qualifications Education: Bachelor's degree (or equivalent) in Computer Science, Engineering, Mathematics, or a related technical field. Experience: 10+ years of professional full-time software engineering experience. Technical Proficiency: Strong expertise in modern backend languages-specifically Go, Java, or C++ . Preferred Qualifications Advanced Degree: Master's degree in Computer Science, Engineering, or a related field. Distributed Systems: Proven track record of designing, building, and maintaining high-scale, resilient distributed systems. Domain Expertise: Prior experience building mission-critical financial services software (e.g., payments, lending, credit cards, or trading platforms ). Mentorship: Experience leading senior engineering teams and fostering a culture of technical rigor and rapid delivery. ~~ ~~ For Sunnyvale, CA-based roles: The base salary range for this role is USD $267,000 per year - USD $297,000 per year. You will be eligible to participate in Halcyon Labs's bonus program, and may be offered an equity award & other types of comp. All full-time employees are eligible to participate in a 401(k) plan. You will also be eligible for various benefits. Ready to Ride? This isn't the kind of place where you follow a playbook - it's where you help write one. If you're driven by impact, energized by challenge, and ready to shape how the world moves - we'd love to hear from you. You may be eligible for bonuses, equity, and other compensation, as well as a range of benefits. Explore our benefits. Offices remain key to collaboration and Halcyon Labs's culture. Unless approved for full remote work, employees must spend at least 50% of their time in-office. Some roles, like those at greenlight hubs, require full-time in-office presence. Ask your Recruiter for details about this role's requirements. Halcyon Labs is proud to be an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. If you have a disability or special need that requires accommodation, please let us know by completing this form.