The Role
Lead the design and architecture of a fitness platform, mentor engineers, drive technical decisions, and utilize AI tools to enhance development processes.
Summary Generated by Built In
[solidcore] is seeking an experienced Senior Software Engineer to lead the design and architecture of our digital fitness platform. The ideal candidate will partner closely with product, engineering, and business stakeholders to drive technical decisions across our mobile and web applications, while building scalable backend services that support a seamless member experience. This role will also play a key part in mentoring engineers, elevating development practices, and exploring how AI-powered tools and automation can accelerate innovation across the organization.
Located in vibrant Arlington, Virginia, and reporting to the Director of Engineering, this is an exciting opportunity to join a rapidly growing, investor-backed organization with a passion for technical excellence and a mission to be the leader in the studio fitness space.
Key Responsibilities:
- Lead the design and architecture of [solidcore]'s fitness platform using modern technologies including Node.js, React Native/Expo, Next.js, and AWS services
- Architect and implement scalable backend services and APIs using AWS Lambda, DynamoDB, and other cloud infrastructure
- Drive technical decisions for mobile and web applications that power the [solidcore] member experience
- Leverage AI-powered development tools like Cursor, Claude Code, and GitHub Copilot to accelerate development and improve code quality
- Build and maintain AI agents and automation systems that enhance both internal operations and member experiences
- Mentor junior engineers and conduct technical code reviews to elevate team capabilities
- Collaborate with cross-functional teams and leadership to ship features that directly impact thousands of fitness enthusiasts daily
- Lead incident response and production troubleshooting, establishing best practices for monitoring with Sentry
- Own key integrations with third-party platforms like Mind Body Online and Contentful CMS
- Define and implement deployment strategies, CI/CD pipelines, and infrastructure improvements using blue-green deployment and modern practices
- Evaluate and introduce new AI technologies and tools to improve both development velocity and member experiences
- Collaborate with product and leadership to translate business needs into technical roadmaps
Qualifications:
- 5-8+ years of professional software development experience
- Proven track record of designing and shipping production systems at scale
- Deep expertise in JavaScript/TypeScript and Node.js
- Strong experience architecting frontend applications with React, React Native, or similar frameworks
- Production experience with AWS services (Lambda, DynamoDB, CloudFormation, CloudFront, etc.)
- Experience designing RESTful APIs and distributed systems
- Track record of mentoring engineers and improving team practices
- Demonstrated leadership in production incident response and system optimization
- Demonstrated experience using AI coding assistants and tools to enhance productivity
- Curiosity and enthusiasm for exploring how AI can solve real-world problems
- Ability to balance technical excellence with pragmatic delivery in a fast-paced environment
- Excellent communication skills with both technical and non-technical stakeholders
Preferred Qualifications:
- Bachelor's Degree in Computer Science or related field (or equivalent experience)
- Experience with React Native/Expo for mobile development
- Experience with Next.js and modern web development practices
- Experience with DynamoDB or other NoSQL databases
- Experience with infrastructure as code (CloudFormation, CDK)
- Experience building or working with AI agents, LLM integrations, or automation systems
- Track record of improving system reliability, performance, or cost efficiency
- Experience with on-call rotations and incident management
- Familiarity with prompt engineering and working with LLM APIs (OpenAI, Anthropic, etc.)
- Knowledge of monitoring tools like Sentry
- Experience with Atlassian tools (Jira, Confluence)
- Experience in the fitness or wellness industry
Compensation & Benefits:
- Competitive salary, based on skills and experience
- Bonus eligibility based on performance
- Monthly cell phone stipend
- 401k with employer match
- Health, dental, & vision insurance
- Flexible PTO
- Free drop in classes at [solidcore]
- And MORE
[solidcore] is a national boutique fitness company with 100+ studios across the country. Our signature workout is 50 minutes of low-impact, high-intensity strength training: the lights are low and the music is loud. The coach guides the class through a series of slow & controlled movements that are sequenced to work muscles to failure. This class is accessible for all fitness levels and can be amplified or modified to accommodate individual goals. Class is as intense as our reviews suggest, but our instructors go above and beyond to provide a welcoming, supportive, empowering, and challenging experience for all. Please visit our website here to read more about our mission.
[solidcore] is firmly committed to social justice and promoting a culture of diversity, equity, and inclusion. You can click here to find out more about the actions we are taking to promote a more diverse and inclusive space for both our clients and our internal team.
[solidcore] is an equal-opportunity employer that is committed to diversity and inclusion in the workplace. We prohibit discrimination and harassment of any kind based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristic as outlined by federal, state, or local laws. This policy applies to all employment practices within our organization, including hiring, recruiting, promotion, termination, layoff, recall, leave of absence, compensation, benefits, training, and apprenticeship. [solidcore] makes hiring decisions based solely on qualifications, merit, and business needs at the time.
Top Skills
Ai-Powered Tools
AWS
Aws Lambda
Ci/Cd Pipelines
DynamoDB
Expo
Next.Js
Node.js
React Native
Restful Apis
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The Company
What We Do
[solidcore] is unlike any other workout out there. Our 50-minute, full-body, high energy, low-impact classes use slow, controlled movements on our resistance-based machine to work your muscles to [failure]. With hundreds of moves stemming from planks, lunges, and squats – as well as many different resistance options – every class is different, leaving your body and mind always challenged. Classes are intense but small, designed to allow our [solidcore]-certified coaches to deliver each client with personalized attention and accountability in a team-environment. The lights are low, the music is on point, and the community is [inspiring].
