Software Engineer – Core Financial Platform ($180K-$275K + Equity) at Basic Capital

Jack & Jill; New York (NY); On-site; USD 180,000 - 275,000; Full time

Job summary

Basic Capital in New York is seeking a Software Engineer for the Core Financial Platform to design and build high‑reliability systems that move money at scale. You will architect event‑driven workflows and own the infrastructure for trading and fund management.

The role emphasizes ownership from design to production, with Kotlin, Temporal, and modern cloud tech. You’ll join a senior engineer team in SoHo to solve challenging retirement‑tech problems.

Qualifications

• 3 years of experience building distributed, high‑reliability backend systems.
• Experience with Kotlin, Go, or Rust and event‑driven architectures.
• Strong knowledge of PostgreSQL/MySQL and cloud infra (AWS/GCP).

Responsibilities

• Architect and build core trading, financing, and fund management systems with high reliability.
• Design and implement event‑driven backend systems and asynchronous workflows using Kotlin, Temporal, and cloud infrastructure.
• Participate in architecture discussions and code reviews from design to production.

Job description

Software Engineer – Core Financial Platform

$180k-$275k Equity

Company Description

Basic Capital is a $25M Series A fintech based in SoHo, NYC, backed by Lux Capital and Forerunner Ventures. They are rebuilding the infrastructure of America’s $1T retirement industry, creating a fundamentally new retirement system powered by a team of elite engineers from Stripe, Uber, and Goldman Sachs.

Job Description

As a Software Engineer on the Core Financial Platform team, you will design and build the high-reliability systems responsible for moving money at scale. You will architect event-driven workflows, design reconciliation logic, and own the infrastructure for trading and fund management, ensuring the transparency and reliability that modern retirement investing requires.

Location

New York, USA

Why this role is remarkable

• Work directly with an elite team of senior engineers who have built mission‑critical financial systems at scale for companies like Stripe, Square, and Uber.
• Tackle deep technical challenges by rebuilding retirement infrastructure from the ground up, replacing decades‑old legacy systems with modern, transparent, event‑driven architectures.
• Join a high‑impact, $25M Series A startup backed by top‑tier investors like Lux Capital, Forerunner Ventures, and Henry Kravis in a high‑performance SoHo office.

What You Will Do

• Architect and build core trading, financing, and fund management systems that orchestrate and reconcile complex flows of funds with high reliability.
• Design and implement event‑driven backend systems and asynchronous workflows using tools like Kotlin, Temporal, and modern cloud infrastructure.
• Participate in high‑level architecture discussions and code reviews, maintaining complete ownership of mission‑critical transaction systems from design to production.

The ideal candidate

• Has 3 years of experience building distributed, high‑reliability backend systems and event‑driven architectures using languages like Kotlin, Go, or Rust.
• Demonstrates strong expertise in relational databases like PostgreSQL/MySQL and cloud infrastructure (AWS/GCP), with a focus on correctness and system reliability.
• Thrives in a fast‑paced, high‑agency environment and is excited to work in‑office in SoHo to solve complex social and financial problems.