SENIOR FULL-STACK SOFTWARE ENGINEER / TECHNICAL LEAD

Sadient; San Francisco (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Sadient in San Francisco, CA, is seeking a Senior Full-Stack Software Engineer / Technical Lead to define architecture, mentor engineers, and deliver a secure, high-performance platform for global financial services.

You will lead a hands-on team building web and mobile features (React/TypeScript, Python, Go/Rust) with Postgres and AWS, collaborating with product and operations to scale Day 1 impact while meeting latency and compliance requirements.

Qualifications

• 7–10 years building and shipping consumer-facing mobile and/or web applications with full-stack exposure (e.g., React/TypeScript, Python, Go/Rust, Postgres, AWS, modern CI/CD).
• Demonstrated experience managing technical teams, architectural decisions, and mentoring engineers.

Responsibilities

• Define architecture and engineering standards for the product.
• Lead delivery of a performant, reliable, and secure platform from ground up.
• Grow and mentor the team; collaborate with product, design, and operations.
• Work directly with founders and scale across platforms as needed.

Skills

React/TypeScript

Python

Go/Rust

PostgreSQL

AWS

CI/CD

Web development

TypeScript

React.js

Kotlin

Go

Rust

Job description

San Francisco, United States | Posted on 08/10/2026

Job Title: Senior Full-Stack Software Engineer / Technical Lead

Experience Required: 7 years

Employment Type: Full Time

Job Location

Remote Work Policy

In office

Available

Relocation

Allowed

Skills

Python

Java

Web Development

TypeScript

React.js

Kotlin

Go (Golang)

Rust

We are hiring for a client building a next-generation consumer finance platform focused on emerging markets, in partnership with some of the world’s largest distribution networks. The product brings together virtual banking and cryptocurrency wallet capabilities into a unified platform, enabling users globally to move, store, and manage money seamlessly within a secure and accessible financial ecosystem.

This initiative comes at a pivotal moment, as stablecoins are reshaping cross-border payments and creating a significant opportunity to modernize financial infrastructure. With nearly 3 billion people still underserved by traditional banking systems, the platform aims to deliver faster, more inclusive, and more reliable financial rails at global scale.

Our client is a well-funded, senior-only team based in San Francisco, led by founders with proven, successful exits. They offer high cash compensation and the opportunity to make an immediate Day 1 impact on a rapidly scaling product that is shaping the future of global consumer finance and financial inclusion.

The Role

A Technical Lead on our team is a hands‑on leadership role for candidates with breadth across multiple layers of our stack and the judgment to drive technical outcomes.

We are building:

An iOS app (Swift)

If you bring a mix of these skill sets and can guide others to deliver high-quality software, this role may be a strong fit. Please also review our Senior Android, iOS, Frontend, and Backend roles for deeper, discipline‑specific details.

As an early engineering leader, you will define our architecture, set engineering standards, and lead the delivery of a performant, reliable, and secure product from the ground up. The problem space includes financial services with real‑money movement at international scale and non‑trivial compliance, integrity, and latency constraints.

You will collaborate across product, design, and operations, and help grow and mentor the team. You will work directly with the founders. This role may expand to broader engineering leadership across platforms as we scale.

Requirements

Requirements

7–10 years building and shipping consumer‑facing mobile and/or web applications with meaningful full‑stack exposure (e.g., React/TypeScript, Python, Go/Rust, Postgres, AWS, modern CI/CD).

Demonstrated experience managing technical teams, making architectural decisions, and mentoring engineers.

You might be an especially good fit if you have:

Experience building for the Latin American market

Experience in financial technology

Strong systems‑thinking and design sense

What We Offer

Day 1 impact on partner products used by millions globally

Shape technical vision and architecture as we scale

Ground-floor opportunity in the rapidly expanding stablecoin ecosystem