Senior Software Engineer (Calculations & Allocations)

Location: New York City NY
Company Stage of Funding: Series B Fintech ($50M Raised)
Office Type: Hybrid
Salary: $180000$230000 Equity

Were representing a rapidly growing fintech company building modern infrastructure for private markets fund accounting. Following a recent $50M Series B the company is scaling quickly while tackling some of the most technically challenging problems in financial software including configurable workflow systems proprietary calculation engines and complex capital allocation infrastructure.

As a Senior Software Engineer on the Calculations & Allocations team youll build the shared business logic layer that powers the entire platform. This is a backend-focused role with significant ownership where youll architect highly configurable systems partner directly with executive leadership and solve technically demanding problems where correctness and auditability are critical.

• Design and build the core calculation and allocation systems that underpin the companys platform.
• Lead complex multi-month engineering initiatives from architecture and design through production deployment.
• Develop highly configurable backend systems business logic and data models supporting financial workflows.
• Contribute to the companys proprietary expression language and calculation engine.
• Design scalable workflow orchestration and rule-based systems that support evolving customer requirements.
• Partner directly with engineering leadership the CTO and executive stakeholders on technical strategy.
• Own system architecture schema design and long-term platform evolution.
• Ensure correctness auditability reliability and maintainability across mission-critical financial infrastructure.
• Collaborate with teammates through architecture reviews whiteboarding sessions and technical mentorship.
• Help establish engineering standards while contributing to a collaborative high-ownership engineering culture.

• 612 years of professional backend software engineering experience.
• Proven experience leading large complex technical projects from architecture through production.
• Strong backend engineering fundamentals with deep expertise in data modeling schema design and distributed systems.
• Experience building highly configurable platforms business logic engines or shared infrastructure.
• Startup experience ideally at Seed through Series C companies with a strong preference for founding engineers or early technical hires.
• Experience working on systems where correctness consistency and auditability are essential.
• Bachelors degree in Computer Science or another technical discipline preferably from a top-tier university.
• Strong communication skills with the ability to clearly explain complex technical concepts and architectural decisions.
• High ownership mindset with the ability to independently drive technical initiatives.

• Experience building domain-specific languages (DSLs) formula engines rule engines workflow platforms or orchestration systems.
• Previous experience as a founder or founding engineer.
• Background building financial infrastructure accounting systems or other correctness-critical software.
• Teaching assistant experience or a demonstrated passion for mentoring and technical collaboration.
• Startup experience building foundational platform architecture from the ground up.
• Strong system design skills with experience creating extensible platform primitives.
• Comfortable working directly with executive leadership in a highly collaborative environment.
• Interest in AI-assisted engineering workflows and developer productivity.

• Base salary: $180000$230000.
• Competitive equity package.
• Sign-on bonus available for exceptional candidates.
• Hybrid work environment in New York City.
• Visa sponsorship available for H-1B transfers (new H-1B sponsorship is not available).
• Opportunity to work on technically sophisticated financial infrastructure at a rapidly growing Series B company recognized on the Forbes Fintech 50 with significant ownership and a strong track record of internal career growth.