Lead Backend Engineer (Java) — Build Scalable Fintech

Castle Island; New York (NY); Hybrid; USD 120,000 - 190,000; Full time

Benefits offered by this job

Stock options

Discretionary bonus

Competitive salary and benefits

Latest tools and technology

World-class team

3-4 days in-office

Job summary

ARQ is seeking a Backend Engineer to design, develop, and maintain scalable backend systems powering our fintech products. You will collaborate with a talented team to build secure, high-performance services that enable cross-border money movement.

Key responsibilities include greenfield development, REST API work, and evolving core systems like payments and treasury management using Java and Spring Boot, with a PostgreSQL backend.

Qualifications

• Fluent in backend development with Java
• Bachelor's degree (or above) in CS, Math, Physics, or related field
• Fast learner with strong communication skills (English)
• Track record building complex products used at scale in fast-growing startups

Responsibilities

• Develop greenfield features and improve existing systems
• Build REST APIs and microservices for payment, treasury, and transactions modules
• Leverage Java and Spring Boot with PostgreSQL to deliver reliable services

Skills

Java

English fluency

Education

Bachelor's degree or higher in CS/Math/Physics/Engineering

Tools

Spring Boot

PostgreSQL

Job description

ARQ is seeking a Backend Engineer to design, develop, and maintain scalable backend systems powering our fintech products. You will collaborate with a talented team to build secure, high-performance services that enable cross-border money movement.

Key responsibilities include greenfield development, REST API work, and evolving core systems like payments and treasury management using Java and Spring Boot, with a PostgreSQL backend.