Senior Full-Stack Software Engineer / Technical Lead
remotestar-team · Cambourne, United Kingdom of Great Britain and Northern Ireland ·
- Seniority
- Lead
- Employment
- Full time
- Category
- Fullstack
- Experience
- 7+ years
- Visa sponsorship
- Yes
remotestar-team · Cambourne, United Kingdom of Great Britain and Northern Ireland ·
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Recruiting From Scratch · Nob Hill, San Francisco
Hands-on technical lead role at an early-stage, founder-led San Francisco team building consumer finance infrastructure for emerging markets (virtual banking, stablecoin/crypto wallets, cross-border payments). The engineer sets architecture and standards across a Python/FastAPI, React/TypeScript, PostgreSQL, and AWS stack while mentoring engineers.
Senior Full-Stack Software Engineer / Technical Lead
San Francisco | Full-Time | In Office
Experience
7–10 years
Location
San Francisco, CA – in office
Visa
Sponsorship / H-1B transfer support available
Relocation
Available; expected timeline typically 1–2 months
Start
Immediate preferred; notice periods can be accommodated
Our client is a well-funded, senior-only San Francisco team led by founders with successful exits. The company is building next-generation consumer finance infrastructure for emerging markets, combining virtual banking, stablecoin and cryptocurrency wallet capabilities, and cross-border money movement in one secure platform.
The mission is to make global financial services faster, more accessible, and more reliable for people who are underserved by traditional banking systems. This is an early-stage environment where engineers can have immediate impact and help shape the product and technical direction from the ground up.
This is a hands-on technical leadership role for an engineering generalist who can work across backend, web, mobile, infrastructure, security, and architecture. You will work directly with the founders, make key architecture decisions, set engineering standards, mentor engineers, and lead delivery of a secure, reliable product handling real-money movement at international scale.
Define and evolve system architecture across backend, web, mobile, infrastructure, security, and data.
Build and ship a high-quality consumer financial product from the ground up.
Make technical trade-offs around scalability, latency, reliability, compliance, data integrity, and security.
Set engineering standards for architecture, code quality, testing, CI/CD, monitoring, and production reliability.
Mentor engineers, review technical decisions, and help grow a high-performing engineering team.
Partner closely with Product, Design, Operations, and the founders to translate product goals into technical execution.
Own outcomes across multiple layers of the stack rather than operating as a narrow frontend or backend specialist.
Backend
Python + FastAPI; strong candidates may also come from Go or Java backgrounds
Web
React + TypeScript
Mobile
iOS / Swift and Android / Kotlin understanding; deep mobile specialization is not required
Database
PostgreSQL – strong data modeling, query optimization, transactions, and scaling
Cloud
AWS, containers, deployment pipelines, monitoring, security, and modern CI/CD
Core Engineering
APIs, distributed systems, scalability, reliability, system design, and secure financial infrastructure
You think like a builder and product owner, not just a feature implementer.
You can see the whole system, explain trade-offs clearly, and make decisions without constant direction.
You are comfortable leading technically while remaining close to implementation and code quality.
You thrive in a fast-moving startup environment with high ownership and direct founder interaction.
7–10 years of experience building and shipping consumer-facing mobile and/or web products.
Meaningful full-stack breadth, with strong backend foundations and enough frontend/mobile knowledge to lead cross-platform discussions.
Strong system design and architecture experience across APIs, distributed systems, databases, scalability, and reliability.
Hands-on technical leadership experience: architecture reviews, technical decision-making, mentoring, code reviews, and engineering standards.
Strong PostgreSQL fundamentals, including data modeling, transaction handling, query optimization, and scale.
Experience with AWS and modern cloud engineering practices such as containers, CI/CD, monitoring, deployment pipelines, and security.
Strong communication skills and the ability to work directly with founders, engineers, and product teams.
FinTech experience in payments, wallets, banking, stablecoins, crypto, remittance, or other financial platforms.
Startup experience, especially Seed to Series B/C, with evidence of building from scratch, working in small teams, and owning outcomes.
Experience building high-growth consumer products at scale.
Experience building products for Latin American or other emerging markets.
Day 1 impact on a rapidly scaling consumer finance product.
Opportunity to shape the technical vision, architecture, engineering culture, and team as the company grows.
Visa sponsorship / H-1B transfer support and relocation assistance available.
Stage 1: Technical phone interview with a short coding challenge.
Stage 2: Optional additional technical conversation if further validation is needed.
Stage 3: 3-hour in-person interview in San Francisco, including a comprehensive live coding exercise. Travel reimbursement is available if required.
Applecart · New York, New York