I'm Nihar.
I bridge product
and engineering.
Fintech builder translating complex technology into revenue growth through technical solutioning, client engagement, and cross-functional collaboration. Based in Brooklyn, building at the intersection of APIs, financial infrastructure, and developer experience.
Urbana-Champaign
photography · running
cooking
First SE hire; led integrations across Bilt's partner ecosystem — API development, QA pipelines, and full-stack delivery across 4 live integrations. Leveraged AI-assisted engineering (Devin) to accelerate timelines and reduce manual overhead.
Scaled 20+ complex BaaS integrations from contract to go-live — covering ACH/Wires, KYC, card issuing, and SFTP/S3 data pipelines. Prevented 3–4 customer churns impacting 2–3M users. Authored API documentation and acted as SME across depository, BIN migration, and debit card programs.
Implemented 25+ OAuth 2.0 FI integrations (1M+ users each), driving +20–30% conversion uplift. Owned full data migrations with 3M+ users live. Negotiated data access agreements on traffic limits, token architecture, and privacy. Contributed to FDX API specs and SEO content converting 3%+ of readers.
Sold Data & AI products into enterprise financial services. Built whitepapers, pitch decks, and certification programs. Managed a global team of interns and achieved certification via IBM Global Sales School.
thefintechapi.com
An end-to-end fintech product development library with frontend and backend components — designed for the novice fintech builder. Covers payments, auth, and data flows with live API sequencing and UX walkthroughs.
thefintechapi.com →Mesh Dev
Backend API contract tooling — manage live API contracts, input specs, upload YAML files. Built for QA teams, complex integrations, and power users.
coming soonSignature Block × Weekend Fund
Collaboration with Ryan Hoover and Weekend Fund — an LP-focused newsletter piece on delivering founder value-add, shipped to thousands of followers.
read on LinkedIn →Freelance Portfolio
Architectural photography assistant for Will Ellis Photography; content writing for tech brands including Firstbase; headshots and brand campaigns for VC-backed companies.
What are you working on?
I'd love to hear about your project, collaboration, or just say hello.