Senior AI Software Engineer

abcfinancial; Polska; On-site; PLN 180,000 - 320,000; Full time

Job summary

ABC Fitness is hiring a Senior Software Engineer, AI Product Incubation, to join a Poland-based embedded product squad focused on bringing new AI capabilities to market. You'll build customer-facing AI features on top of ABC's AI platform, collaborating with Product, Design, Data, and security teams to ship measurable, reliable experiences for our fitness operators and their members.

You will own production readiness, monitor usage, and contribute to incident learning, with a strong emphasis on

Qualifications

• Production experience shipping customer-facing software.
• Hands-on AI feature development, not just demos.
• Strong product judgment linking tech decisions to user value.
• Comfort with probabilistic systems and risk-based launches.
• Solid software engineering fundamentals: testing, CI/CD, ownership.

Responsibilities

• Build customer-facing AI product capabilities from concept through production release.
• Work with Product and Design to define 'good enough' for AI-enabled experiences.
• Use existing AI platform capabilities to deliver reliable product experiences.

Skills

Production shipping

Hands-on AI feature

Product judgment

Probabilistic systems

Software fundamentals

Job description

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

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.

ABC Fitness is building AI enabled product experiences that help fitness operators move faster, make better decisions, and create better outcomes for their customers and members. As Senior Software Engineer, AI Product Incubation, you will join a new Poland - based embedded product squad focused on bringing new AI capabilities from idea to market.

This is a product engineering role, not an AI research or platform role. You will build on top of ABC's existing AI platform services, including our gateway, evaluation framework, retrieval patterns, and guardrails, so your focus can stay close to the customer problem, the product experience, and the measurable outcome.

You will report to an Engineering Leader and partner closely with Product, Design, Data, AI platform, and other engineering teams to ship AI-enabled features that are useful, measurable and commercially ready.

WHAT YOU'LL DO

• Build customer-facing AI product capabilities from early concept through production release, usage measurement, and iteration.
• Turn ambiguous product opportunities into small, testable slices that can be validated with real users, real data, or real customer workflows.
• Partner with Product and Design to define what "good enough" means for AI-enabled experiences based on user need, workflow risk, and customer impact.
• Use existing AI platform capabilities, including retrieval, evaluation, guardrails, prompts, models, and observability, to deliver reliable product experiences without owning the platform itself.
• Ship features behind flags, monitor early usage and quality signals, and improve the product based on what customers actually do.
• Design graceful failure paths for moments when AI output is wrong, slow, incomplete, or unavailable.
• Use AI-assisted development tools responsibly to increase speed while reviewing, testing, and owning the code you ship.
• Support production readiness, operational follow-through, and incident learning for the capabilities you deliver.

WHAT YOU'LL NEED

• Experience shipping customer-facing software products to real users in a production environment.
• Hands-on experience building or contributing to AI-enabled product features, not only demos, proofs of concept, internal tools, or prompt experiments.
• Strong product judgment: you can connect technical decisions to user value, adoption, trust, and business outcomes.
• Comfort working with probabilistic systems, including defining quality expectations, evaluating outputs, understanding failure modes, and making risk-based launch decisions.
• Strong software engineering fundamentals, including clean code, code review, automated testing, observability, CI/CD, and production ownership.
• Ability to work effectively in a new, fast-moving product squad with ambiguity, short feedback loops, and evolving priorities.
• Strong cross-functional collaboration with Product, Design, Data, Security, AI platform, and customer-facing teams.
• Accountability for outcomes beyond launch, including adoption signals, reliability, customer feedback, and whether a feature should be improved, paused, or retired.

AND WHAT'S GREAT TO HAVE

• Experience building AI-enabled workflows in SaaS, vertical software, fintech, payments, customer operations, sales automation, scheduling, retention, or member engagement.
• Experience with retrieval-augmented generation, LLM evaluation, prompt iteration, model selection, or AI observabili