Senior Software Engineer (Fullstack, AI Platform)

United States Digital Space LLC; Boston (MA); On-site; USD 150,000 - 215,000; Full time

Job summary

United States Digital Space LLC in Boston, MA is seeking a Senior Software Engineer on the AI team to design, build, and scale systems powering our internal and member-facing experiences. You will collaborate with product managers, designers, and data scientists to deliver end-to-end features and contribute to agent orchestration architecture.

The ideal candidates have 2–5 years of software development experience, hands-on with Next.js, React, Tailwind CSS, RESTful APIs, and building solutions

Qualifications

• 2–5 years of software development experience.
• Experience with Next.js, React, and Tailwind CSS.
• Experience designing RESTful APIs.
• Experience building solutions leveraging Large Language Models.
• Strong problem-solving and collaboration.

Responsibilities

• Work in a cross-functional team to deliver end-to-end features.
• Design, develop, and maintain scalable front-end and back-end systems.
• Design and build intuitive user interfaces and integrate with backend APIs.
• Contribute to feature ideation, technical design, and implementation.
• Write clean, maintainable, well-tested code.
• Monitor, debug, and resolve production issues and improve performance.

Skills

2–5 years experience

Next.js

React

Tailwind CSS

RESTful APIs

LLMs

problem solving

Tools

Web frameworks

Job description

At the company, we’re on a mission to unlock human performance and healthspan. the company empowers members to perform at a higher level through a deeper understanding of their bodies and daily lives. Our wearable technology and software platform provide personalized insights that help individuals optimize their health, fitness, and recovery.

As a Senior Software Engineer on the AI team, you will play a key role in building and scaling the systems that power the company AI’s internal and member-facing experiences. You will work across the stack to deliver high-quality features, contribute to agent orchestration system architecture, and collaborate with cross-functional partners to create seamless and impactful user experiences. This role is ideal for an engineer who is passionate about building reliable, scalable applications and thrives in a fast-paced, collaborative environment.

RESPONSIBILITIES:

• Work in a cross-functional team alongside product managers, designers, and data scientists to deliver end-to-end features
• Design, develop, and maintain scalable front-end and back-end systems using modern frameworks and cloud technologies
• Design and build intuitive user interfaces and integrate them with robust backend APIs to deliver seamless member experiences
• Contribute to feature ideation, technical design, and implementation, translating business requirements into scalable solutions
• Write clean, maintainable, and well-tested code, following best practices for performance, security, and reliability
• Monitor, debug, and resolve production issues while continuously improving system performance and stability

QUALIFICATIONS:

• 2–5 years of professional software development experience
• Experience building and maintaining high-quality, performant web applications using Next.js, React, and Tailwind CSS
• Experience designing and developing APIs (RESTful services preferred)
• Experience building solutions leveraging Large Language Models
• Strong problem-solving skills and ability to break down complex problems into manageable solutions
• Ability to collaborate effectively with cross-functional teams in a fast-paced environment
• A growth mindset with a strong desire to learn, iterate, and improve continuously

Learn more about our Software Org and how to be successful in yourengineeringcareer at the company via ourCareer Framework.

This role is based in the the company office located in Boston, MA. The successful candidate must be prepared to relocate if necessary to work out of the Boston, MA office.

the company is an Equal Opportunity Employer and participates inE-verifyto determine employment eligibility. It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

The the company compensation philosophy is designed to attract, motivate, and retain exceptional talent by offering competitive base salaries, meaningful equity, and consistent pay practices that reflect our mission and core values.

At the company, we view total compensation as the combination of base salary, equity, and benefits, with equity serving as a key differentiator that aligns our employees with the long‑term success of the company and allows every member of our corporate team to own part of the company and share in the company’s long‑term growth and success.

The U.S. base salary range for this full-time position is $150,000 - $215,000. Salary ranges are determined by role, level, and location. Within each range, individual pay is based on factors such as job-related skills, experience, performance, and relevant education or training.

In addition to the base salary, the successful candidate will also receive benefits and a generous equity package.

These ranges may be modified in the future to reflect evolving market conditions and organizational needs. While most offers will typically fall toward the starting point of the range, total compensation will depend on the candidate’s specific qualifications, expertise, and alignment with the role’s requirements.