Principal Software Developer

Join ABC Fitness and become part of a culture that’s as ambitious as it is authentic. Let’s transform the future of fitness—together! Our Values Best Life We believe great work begins with great people. That’s why our culture is built on respect, trust, and belonging. We create an inclusive environment where every team member can bring their authentic self to work—because diverse perspectives drive innovation and meaningful impact. Growth Mindset We are doers, thinkers, and dreamers. At ABC Fitness, your growth is our investment. Through continuous learning, mentorship, and professional development opportunities, we empower you to reach new heights—personally and professionally. One Team From day one, you’ll be part of a team that collaborates, celebrates, and cares. We move fast, support one another, and have fun along the way. Because when you thrive, we all thrive. This is a Principal Software Developer role across the CRM space on the ABC Glofox platform, setting technical direction for shared CRM capabilities used by multiple engineering teams including CRM Ops (CRM operations and segmentation: tags, audiences, tasks, and member filtering) and Connect (automations and communications), and providing technical partnering with other squads as needed. You’ll help set technical direction beyond any single feature team - raising the bar for architecture, reliability, and operability across CRM data paths and product delivery - while staying close to the systems that serve ~130M active members and turn engagement into measurable outcomes for studios. RESPONSIBILITIES: Define and drive high-leverage architecture, technical strategy and engineering standards for XLerate across multiple CRM-space teams Own architecture, design patterns and lead design of large-scale, data intensive systems complex systems spanning segmentation, CRM workflows, and shared platform paths used by partner squads Raise and evolve engineering standards for reliability, performance, observability, and operability at scale Guide technical alignment with Leads, Product, and teams such as CRM Ops and Connect to align technical bets with XLerate outcomes Mentor Engineers and technical leads across the CRM domain; unblock the hardest technical problems through design reviews and hands-on guidance Lead diagnosis and resolution of the highest-severity, cross-team Customer Incidents in the CRM space - coordinating CRM Ops, Connect, and partner squads, driving the technical fix, and leaving the system more operable than you found it Shape and set practical standards for how AI is used across XLerate delivery and product surfaces: raise the bar for safe, evidence-based use of AI in engineering (and, where relevant, member/studio-facing CRM workflows), without treating it as a side project. Identify, prioritize and land platform improvements that reduce systemic risk and accelerate delivery across the CRM domain Strengthen engineering execution through CI/CD, production readiness, observability, continuous improvement and through ways of working Set technical direction for large-scale platform migrations and integrations (including Gymsales → Glofox and cross-platform ABC integrations), including migration tooling, data cutover, and dual-run / coexistence strategies Shape webhook and third-party integration architecture that partner products and external systems rely on QUALIFICATIONS: Bachelor’s degree in Computer Science or relevant field exp. preferred 8+ years of software engineering experience, with proven staff/principal-level technical impact required Deep systems design experience for distributed, data-intensive products that affect multiple teams and services Strong judgment on architecture trade-offs, production readiness, and long-term maintainability Solid understanding of the practical application of agile development methods in an Agile/Lean/Continuous Delivery environment Knowledge of modern Quality and Testing principles Strong written and verbal communication; comfortable influencing technical direction across teams, document architectural decisions and align senior engineering and product stakeholders Comfortable learning new technologies and systems Hands-on experience designing and delivering large data/platform migrations (tooling, cutover, rollback, and operability under dual-run) Experience establishing engineering standards across multiple squads AND IT’S GREAT TO HAVE: Experience with Golang and/or Java services at scale Deep experience with large MySQL / relational data platforms Experience with no-SQL DBs (e.g. MongoDB) Prior CRM, marketing-tech, or audience/segmentation domain experience Experience with query federation / distributed querying systems Track record leading complex, multi-team incident or production-fix work (not only in-squad bugs) Practical experience applying AI in software delivery or CRM/marketing-tech products, with judgment on quality, privacy, and operability Compensation for this role will be determined based on a variety of factors, including relevant experience, qualifications, skills, geographic location, and market considerations. The anticipated compensation range for this position is - 370,000.00 - 378,000.00 PLN- annually. In addition to base compensation, eligible employees may be offered other forms of compensation, such as bonuses, commissions, equity, or other incentive programs, where applicable. Compensation and benefits may vary by location and are subject to applicable legal, business, and market requirements. WHAT’S IN IT FOR YOU: Purpose led company with a Values focused culture – Best Life, One Team, Growth Mindset Time Off – with our open PTO policy, you pick when you want time off when it’s best for you! Days of Disconnect – once a quarter, we take a collective breather and enjoy a day off together around the globe. #oneteam Parental & Pawternity Leave – we offer leave for when your family grows by two feet or four paws! Fitness Perk – we are committed to meeting you wherever you are in your fitness journey with a quarterly reimbursement. Discounts – access to discounts with our partners, such as Dell, Microsoft & many more. Medical/Dental/Vision coverage. EAP – we get you help when you need it. Period. Calm App +4 – enjoy tranquility with a Calm App subscription for you and up to 4 dependents over the age of 16. And more! – so many benefits we couldn’t even fit them all here! At ABC Fitness, we don’t just build technology—we build communities and transform lives. Your work matters here, your growth is supported, and your voice is heard. We welcome diverse talent and encourage you to apply, even if you don’t meet every requirement. ABC’S COMMITMENT TO DIVERSITY, EQUALITY, BELONGING AND INCLUSION : ABC is an equal opportunity employer committed to diversity, equity, and inclusion. We strive to create a workplace where every employee, client, and partner feels valued, inspired, and empowered to reach their full potential. For us, inclusion isn’t just the right thing to do—it’s a business imperative. Learn more at abcfitness.com. About ABC Fitness ABC Fitness is the #1 software provider for fitness businesses of any size, all around the world. Supporting 30K clubs, 650K coaches, 40M members, and processing more than $12B in payments every year, ABC Fitness provides scalable, data-driven solutions to simplify club management and engage members and clients. From personal trainers, boutique studios, and gyms, to international franchise health clubs, ABC Fitness will move your business forward through technology and industry insights. Innovation is at the center of everything we do, across ABC Glofox, ABC Ignite, ABC Trainerize, and ABC Evo. Let's make your fitness vision a seamless reality, together. Learn more at abcfitness.com #LI-REMOTE