Senior Software Engineer, Full-Stack

Till Financial • Brooklyn, NY

6d • $150,000 - $200,000 • Remote

About The Position

Till is a banking platform built for families, offering debit cards, accounts, and tools to help parents raise financially capable kids. Recently acquired by Western & Southern Financial Group, a Fortune 500 company, Till combines the agility of a fintech startup with the stability of a large financial institution. The platform is designed for shared ledgers with separate kid and parent app experiences, catering to diverse family structures and the rigorous demands of financial services for minors. The acquisition provides capital for growth while preserving the lean, senior engineering culture focused on end-to-end ownership and direct product impact. The engineering team is senior, deliberately small, and values individuals who can ship across the stack and own outcomes.

This role offers a unique opportunity to join a mission-driven fintech at a pivotal moment. With the backing of Western & Southern Financial Group, there are ample resources for ambitious development while maintaining a lean operational model. The position offers significant ownership and impact from the outset. The initial 3-6 months will involve substantial greenfield development, with the engineer owning medium-to-large projects end-to-end, including technical design, implementation across Go backend and React/React Native frontends, deployment, and post-deployment management. The codebase utilizes hexagonal/onion architecture, and familiarity with such patterns is expected.

Requirements

• At least 5 years of production Go experience, including shipping and operating Go services.
• Experience with idiomatic Go patterns: interfaces, goroutines, context propagation, error handling.
• Strong React + TypeScript experience on the web.
• Experience shipping a consumer mobile app to production (React Native or native). React Native can be learned on the job.
• Experience owning medium-to-large features end-to-end, with a working knowledge of systems beyond one's own service.
• Experience building in hexagonal, onion, or comparable layered architectures.
• A track record of close partnership with product, design, and business stakeholders, including translating fuzzy requirements into buildable plans.
• Experience operating under the constraints of money movement.

Nice To Haves

• ACH, card processing, banking integrations (Galileo, Marqeta, or similar), or ledger design experience.
• AWS experience (Lambda, RDS, SQS, CDK for IaC).
• Familiarity with family fintech, kids’ financial products, or consumer apps targeting underserved demographics.
• Experience in a small, senior engineering organization where the line between individual contributor and tech lead is blurred.

Responsibilities

• Own medium-to-large features from technical design through production, spanning backend services, APIs, and consumer-facing web and mobile surfaces.
• Lead technical design discussions and architecture reviews.
• Inform higher-level decisions regarding system evolution and scaling with institutional backing.
• Ship money movement and payments features that require accuracy and reliability under load, across multiple banking partners and rails.
• Work within the constraints of financial software, including compliance, auditability, idempotency, and data integrity.
• Contribute to ledger design and transaction reconciliation for a growing user base.
• Carry full production responsibility, including on-call rotation, performance and cost optimization, and rigorous testing (unit, integration, contract).
• Translate ambiguous product requirements into clear technical scope and shippable plans.
• Push back on scope or timelines that are not feasible.
• Mentor other engineers through code reviews and design reviews.
• Raise the engineering bar without being overly rigid.

Benefits

• Base salary range: $150,000 - $200,000 USD, depending on experience and location.
• Annual bonus based on experience.
• Health, dental, and vision coverage.
• HSA with company contribution.
• Parental leave.
• Flexible time off.
• Remote-first work environment (NYC preferred for occasional in-person collaboration).

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed