[Hiring] Principal Software Engineer @Xplor

Role Description

You’ll be one of the first key engineering hires on a new AI Products & Platform initiative, working directly with senior leadership to shape how AI is built and applied across Momence and the broader Xplor Fitness ecosystem. This is a foundational role — you’ll help establish patterns, ship early AI-driven capabilities, and influence the technical direction of AI across multiple products. The work spans customer-facing features and internal platform capabilities that enable teams to move faster with AI.

Reporting into the VP of Engineering, you’ll work across backend services, APIs, integrations, and frontend experiences. AI/ML experience is helpful but not required — what matters most is strong engineering fundamentals, product thinking, and the ability to operate in ambiguity.

What You’ll Do

• This is a full-stack role where you will build and ship AI-powered features across the Momence platform (e.g., AI sales & support agents, intelligent member engagement, natural language reporting, workflow automation).
• Develop integrations with leading AI providers (e.g., OpenAI, Anthropic) and evolving interfaces.
• Design and implement scalable AI patterns including prompt frameworks, evaluation pipelines, and feedback loops.
• Contribute to building AI-native capabilities embedded into core product workflows.
• Build internal tooling to accelerate engineering velocity (AI-assisted development, testing, migration tooling, agent workflows).
• Collaborate with teams across Momence, Mariana Tek, and other platforms to identify high-impact opportunities for AI.
• Contribute to architecture decisions and help define technical standards for AI systems.
• Operate end-to-end — from identifying opportunities to delivering production-ready solutions.
• Help establish responsible AI practices including observability, logging, evaluation, and human-in-the-loop systems.

Compensation

• This average base salary pay range for this position is $150,000-$200,000 USD.
• For this role, we can offer a fully remote working arrangement once you are based in the United States and hold full working rights. Ideally, the candidate would be based in the East Coast time zone to enable effective collaboration with engineering team members in Prague, Czechia.

Qualifications

• 8+ years of software engineering experience.
• Strong backend fundamentals (API design, service architecture, data modeling, distributed systems).
• Solid frontend experience with modern frameworks, design systems, and web standards.
• Proven ability to ship products or meaningful features end-to-end.
• Comfort working in fast-paced environments with evolving requirements and ambiguity.
• Strong ownership mindset — able to take ideas from concept to production.
• Clear and proactive communication — this is a high-visibility, high-impact role.

Nice to Have

• Experience with LLM APIs (OpenAI, Anthropic), prompt engineering, or RAG pipelines.
• Familiarity with agent-based systems or workflow automation using AI.
• Experience with AWS (including Bedrock, Lambda, or event-driven architectures).
• Experience building internal developer tools or productivity systems.
• Background in SaaS, B2B2C, or marketplace platforms.
• Experience making architectural or build vs. buy decisions.

Benefits

• Unparalleled opportunities to learn and accelerated career development.
• A collaborative, team environment with people who truly love what they do.
• Paid parental leave benefits program.
• Learning resources available to continue to develop your skills and career development.
• Access to mental health support.
• Flexible work arrangements.

How to apply?

To start your application with us, please submit your CV and a cover letter and we’ll be in touch as soon as we can. Please include the word "moonshot" at the top of your cover letter so that we know you really took the time to read our job ad.

Good to know

• To be considered for employment, you must be legally authorized to work in the country you're applying for. Xplor does not sponsor visas, either at the time of hire or at any later time.
• We kindly ask you to apply through our careers portal or external job boards only. Please don't send your application via email.
• To learn more about us and our products, please visit www.xplortechnologies.com/careers .
• We also invite you to check out our Candidate FAQs for more information about our recruitment process www.xplortechnologies.com/recruitment-faqs .