Staff Backend Engineer (Fintech) – Kotlin/Java Expert

Jack & Jill; New York (NY); On-site; USD 180,000 - 240,000; Full time

Job summary

Jack & Jill in New York seeks a senior software engineer to help shape backend engineering for fintech products. You will lead initiatives, design scalable architectures, and mentor teammates to deliver robust solutions.

The role requires deep Kotlin/Java backend knowledge, a strong product sense, and collaboration with cross-functional teams to solve complex fintech problems.

Qualifications

• Requires 5+ years of software engineering experience and at least 2 years in a Staff or Principal role.
• Deep backend fundamentals in Kotlin or Java.
• Strong product instincts for solving complex fintech challenges.

Skills

Kotlin

Java

System Architecture

Technical Strategy

Test-Driven Development

Continuous Delivery

Mentorship

Backend Development

Full-stack Development

Fintech

Job description

Lead the architecture and end-to-end development of an AI-native ERP platform using Kotlin and Svelte. Collaborate with cross-functional teams to automate financial workflows and mentor engineers to raise technical standards.

Requirements: Requires 5+ years of software engineering experience, with at least 2 years in a Staff or Principal role. Must have deep backend fundamentals in Kotlin or Java and strong product instincts for solving complex fintech challenges.

Key Skills: Kotlin, Svelte, Spring Boot, System Architecture, Technical Strategy, Test-Driven Development, Continuous Delivery, Mentorship, Backend Development, Full-stack Development, Fintech