Staff Full Stack Engineer

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

At this time, Ark is only accepting candidates authorized to work in the United States as we are unable to provide visa sponsorship for this role.

Do you enjoy creating outstanding customer experiences through full-stack development? Does working with cutting edge AI tools and the latest cloud technologies to deliver quickly excite you? Do you enjoy working in the financial space where accuracy and performance work hand in hand? If so, Ark is the place for you!

We are seeking a highly-skilled and driven Staff Full Stack Developer to join our team. In this role, you will be responsible for designing, developing, and implementing application solutions across the entire Ark platform, encompassing frontend, backend, database, testing, and infrastructure. You will collaborate closely with product managers to translate business requirements into innovative technical solutions. As a contributing member of the team, you will also provide technical guidance and mentorship to other developers, and manage direct reports.

Staff Software Engineer - Full Stack

At this time, Ark is only accepting candidates authorized to work in the United States as we are unable to provide visa sponsorship for this role.

Do you enjoy creating outstanding customer experiences through full-stack development? Does working with cutting edge AI tools and the latest cloud technologies to deliver quickly excite you? Do you enjoy working in the financial space where accuracy and performance work hand in hand? If so, Ark is the place for you!

We are seeking a highly-skilled and driven Staff Full Stack Developer to join our team. In this role, you will be responsible for designing, developing, and implementing application solutions across the entire Ark platform, encompassing frontend, backend, database, testing, and infrastructure. You will collaborate closely with product managers to translate business requirements into innovative technical solutions. As a contributing member of the team, you will also provide technical guidance and mentorship to other developers, and manage direct reports.

About Ark

Ark, an AngelList company, builds the operating platform for private capital. Fund accounting, investor portals, portfolio management, and virtual data rooms all live in one secure, cloud-based system, giving investment, finance, and investor relations teams a single source of truth.

Since joining AngelList in mid-2026, Ark has been integrating closely with AngelList’s broader platform. Together we’re helping fund managers run leaner operations, deliver a better experience to their LPs, and raise capital faster.

What You’ll Do

• Full Stack Development: Takes an AI-first approach to developing application solutions across the Ark platform including frontend, backend, database, testing, and infrastructure.
• Requirements Analysis & Solution Design: Collaborate with product and our lead architect to thoroughly understand business requirements and translate them into comprehensive technical solutions.
• Technical Leadership: Lead small projects and efforts to completion with several assisting junior developers; provide technical guidance, code reviews, and mentorship to other developers, fostering a collaborative and knowledge-sharing environment; opportunities for direct reports.
• Technology Research & Evaluation: Stay abreast of emerging trends and evaluate new technologies to determine their suitability and timing for integration into the Ark platform.
• System Maintenance & Security: Ensure applications and systems are well-maintained, secure, and up-to-date, proactively addressing any potential vulnerabilities.
• Testability: Write unit tests and participate in QA processes. Maintain Swaggerhub/OpenAPI design and documentation to maintain a clean, consistent, and well-documented API for all services.
• Infrastructure Improvement: Continuously improve existing error handling, logging, tracing, monitoring, and alerting infrastructure to enhance system reliability and performance.

Required Qualifications

• 10 to 15 years of proven full-stack software engineering expertise, ideally within the financial sector or similar industry, backed by a Bachelor’s or Master’s degree in Computer Science or a related discipline.
• 10+ years of deep server-side development mastery using Java and Spring Boot, implementing automated quality through JUnit, Rest Assured, or Cucumber; Python skills are a plus.
• 7+ years of robust front-end experience crafting dynamic interfaces with JavaScript, TypeScript, and React, using modern test frameworks like Playwright, Vitest, and/or Jest.
• Recent AI-first development experience using specification-driven development through Devin, Blitzy, and Claude Code are preferred; Cursor, Junie and Github Copilot also accepted.
• 5+ years of cloud excellence, specifically building, scaling, and maintaining high-performance production applications directly within the AWS ecosystem.
• 8+ years of comprehensive database expertise spanning SQL, NoSQL, and GraphDB technologies; MySQL is preferred, PostgreSQL and Neo4j are a plus.
• Showcase a successful track record of thriving in a remote-first setting and effectively collaborating with diverse external resources, including near-shore and off-shore development partners.

Skills & Abilities

• Problem Solving & Analytical Skills: Exceptional problem-solving and analytical skills with a strong understanding of analytical tools.
• Communication & Collaboration: Excellent verbal and written communication skills, including the ability to effectively interface with technical and non-technical staff at all levels.
• Troubleshooting: Proven ability to troubleshoot and resolve a wide range of application-related issues, including error messages, connectivity problems, and performance bottlenecks.
• Cloud Expertise: Strong understanding of application deployment and infrastructure components in a cloud environment, particularly AWS.
• Startup & SMB Experience: Experience working using agile methodologies in a fast-paced startup or SMB environment.