Senior Full Stack Software Engineer

About the company Our client is a fast-growing software company. The role Raydar is recruiting for this role on behalf of our client. Own the design and delivery of customer-facing software, working across front-end and API layers with a strong product mindset. Shape how products are built, form clear opinions on solving user needs, and help establish technical and cultural foundations as the team scales. What you'll do - Set direction for the products the company builds and carry them from idea to delivery. - Architect front-end applications and APIs so they work smoothly together. - Form well-reasoned opinions on the best ways to meet customer needs. - Collaborate with users and teammates to gather feedback and iterate quickly. - Take on varied problems as priorities shift, moving between product work and core infrastructure as goals change. - Mentor teammates and help set engineering practices as the organization grows. Requirements What we're looking for - Professional software engineering experience at a fast-paced startup or a quantitative trading firm, with high ownership of projects. - Expertise in at least one full stack language, paired with a product mindset and good design sense. - Ability to adapt quickly and choose the best tool for the job. - Readiness to lay technical and cultural groundwork during rapid growth. - Commitment to mentoring others and openness to being mentored. - Strong track record of tenure, with 2+ years at each company and clear career progression. - Intensity and enthusiasm for working on complex problems. - Enthusiasm for working in the office alongside colleagues five days a week. Bonus points - Product management skills, including working directly with clients and users to gather feedback. - Experience with AI and LLM-integrated products. Benefits Compensation and benefits - Base salary: USD 150,000 to 350,000 per year - Equity - Flexible time off and paid holidays - Medical, dental and vision coverage - Life insurance - Retirement plan - Parental leave - Commuter benefits - Mental health and wellness support Location and work model - New York, NY, United States - On-site, 5 days per week in office - Full-time