Senior Software Engineer (Backend)

TL;DR

Senior Software Engineer (Backend): Building and evolving large-scale distributed systems for financial platforms with an accent on performance, reliability, and long-term maintainability. Focus on designing complex APIs, ensuring system correctness under high concurrency, and mentoring engineering talent.

Location: Must be based in Menlo Park, CA or New York, NY with in-person attendance expected at least 3 days per week.

Salary: $196,000–$230,000 USD (Zone 1)

Company

A mission-driven financial technology company democratizing finance for all through innovative trading and investment platforms.

What you will do

• Build and evolve scalable backend systems balancing performance and reliability.
• Design, implement, and release product-facing features with strict correctness requirements.
• Partner with frontend and data teams to define and refine REST APIs serving millions of users.
• Lead large, technically complex projects from initial design through execution.
• Mentor junior engineers through code reviews and hands-on technical guidance.
• Identify opportunities to improve system performance and operational risk management.

Requirements

• 5+ years of professional software development experience.
• 3+ years of experience building low-latency, large-scale distributed systems in production.
• Proven experience designing highly concurrent systems and well-structured REST APIs.
• Demonstrated ownership of large projects with sustained impact.
• Strong technical judgment and ability to prioritize work aligned with business goals.
• Ability to break down complex problems into practical, high-quality solutions.

Culture & Benefits

• Performance-driven compensation including bonuses and equity ownership.
• 100% paid health insurance for employees with 90% coverage for dependents.
• 401(k) matching and employer-paid life and disability insurance.
• Lifestyle wallet for wellness and learning expenses.
• Comprehensive time off including parental leave and company holidays.
• Exceptional office experience with catered meals and collaborative workspaces.