Senior Full-Stack Engineer - AI-First, AWS, FinTech Leader

Ark; Boston (MA); Remote; USD 180,000 - 260,000; Full time

Job summary

Ark is seeking a Staff Full Stack Developer to design, develop, and implement comprehensive application solutions across the Ark platform—spanning frontend, backend, database, testing, and infrastructure. You will collaborate with product managers to translate business requirements into innovative technical solutions and mentor junior developers.

The role emphasizes AI-first development, cloud-native deployment on AWS, and a remote-first culture suited for experienced engineers in a distributed

Qualifications

• Bachelor’s or Master’s degree in Computer Science or related discipline.
• 10–15 years of full-stack software engineering experience, ideally in the financial sector or similar industry.
• 10+ years server-side development with Java and Spring Boot; Python skills a plus.
• 7+ years front-end experience with JavaScript, TypeScript, and React; familiarity with Playwright, Vitest, and Jest.
• 5+ years cloud experience in AWS.
• 8+ years database experience with SQL/NoSQL/GraphDB; MySQL preferred; PostgreSQL and Neo4j a plus.
• Demonstrated ability to thrive in a remote-first setting and collaborate with external partners.

Responsibilities

• Full Stack Development across the Ark platform, including frontend, backend, database, testing, and infrastructure.
• Collaborate with product management to translate requirements into technical solutions.
• Provide technical leadership, code reviews, and mentorship to other developers; manage direct reports where applicable.
• Stay updated on AI-first development and evaluate new technologies for integration.
• Ensure applications are secure, well-maintained, and well-documented (Swagger/OpenAPI).
• Improve infrastructure, error handling, logging, tracing, and monitoring for reliability.

Skills

Technical leadership

Communication

Analytical thinking

Troubleshooting

Collaboration

Education

Bachelor’s or Master’s degree in Computer Science or related

Tools

Java

Spring Boot

JUnit

Rest Assured

Cucumber

Python

JavaScript

TypeScript

React

Playwright

Vitest

Jest

Devin

Blitzy

Claude Code

Cursor

Junie

Github Copilot

AWS

MySQL

PostgreSQL

Neo4j

Job description

Ark is seeking a Staff Full Stack Developer to design, develop, and implement comprehensive application solutions across the Ark platform—spanning frontend, backend, database, testing, and infrastructure. You will collaborate with product managers to translate business requirements into innovative technical solutions and mentor junior developers.

The role emphasizes AI-first development, cloud-native deployment on AWS, and a remote-first culture suited for experienced engineers in a distributed