Principal AI Engineer – Developer Experience and Agentic Tooling

ABC Fitness; Town of Poland (NY); On-site; USD 113,429 - 121,343; Full time

Benefits offered by this job

Open PTO policy

Parental & Pawternity Leave

Fitness reimbursement

Discounts with partners

Medical/Dental/Vision coverage

EAP

Job summary

ABC Fitness is building an intelligent platform for the fitness industry, embedding AI into products, workflows, and decision points used daily. This hands-on software engineering role focuses on internal AI-enabled development tools, reusable APIs, and durable AI workflow infrastructure that support engineering teams.

You’ll collaborate across engineering, platform, security, and product to remove friction, improve reliability, and scale AI across the company.

Qualifications

• Strong software engineering fundamentals across backend systems and APIs.
• Experience building tools for engineers to improve velocity and reliability.
• Experience building or integrating AI/LLM-powered systems and AI workflows.
• Knowledge of agentic software delivery patterns and durable orchestration.
• Platform thinking with reusable abstractions and long-term adoption.
• Workflow and orchestration expertise across multi-step systems.
• Focus on reliability, observability, security, cost, and maintainability.
• Bias toward enabling other engineers to move faster and better.

Responsibilities

• Build AI-powered internal development tools.
• Design and ship internal software platforms for engineering teams.
• Create reusable tools, APIs, workflows to adopt AI patterns.
• Connect events from CI/CD and other systems into a coherent view of changes.
• Design durable AI workflow infrastructure with human-in-the-loop pauses.
• Ensure platforms are production-ready, observable, and cost-aware.
• Define patterns and best practices for safe AI usage.
• Collaborate with engineering, platform, security, and product teams.

Skills

Backend systems

APIs

Developer tools

Distributed systems

AI systems experience

Agentic software

Platform mindset

Workflow orchestration

Production mindset

Enablement

Tools

CI/CD tooling

OpenTelemetry

Source control

Job description

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.

Overview

ABC Fitness is building an intelligent platform for the fitness industry, with AI embedded into the products, workflows, and decision points our customers rely on every day. Our strategy is focused on using AI to automate routine work, personalize experiences, surface actionable insights, and help operators move from reactive management to proactive, data‑informed execution.

We are investing in the platform, data, and product capabilities required to deliver secure, scalable AI experiences that improve efficiency, strengthen engagement, and drive better business outcomes.

Why This Matters (Strategic)

ABC Fitness is building toward an AI‑native future by developing agentic experiences, intelligent workflow automation, and platform‑level capabilities that turn data and models into action. The work spans recommendation systems, orchestration, embedded intelligence, and scalable AI‑powered product experiences that directly influence how customers acquire, serve, retain, and grow their members.

Build internal AI tools that help development teams move faster, safer, and smarter.

ABC Fitness is investing in internal AI‑powered platforms that enable our engineering teams to build, ship, understand, and operate software more effectively. This role is focused on creating the software, systems, and workflows that make AI a practical force multiplier for development teams across the company.

What You’ll Do

• Build AI‑powered internal development tools
• Design and ship internal software platforms that help engineering teams understand, automate, and improve the software development lifecycle
• Enable development teams through platform capabilities: create reusable tools, APIs, workflows, and interfaces that allow teams to adopt AI‑assisted development patterns without building from scratch
• Improve software change intelligence: build systems that connect events from CI/CD, deployments, approvals, security scans, quality gates, source control, work tracking systems, and service dependency data into a coherent view of software change across the organization
• Build durable AI workflow infrastructure: design and implement infrastructure for long‑running AI‑assisted workflows, including planning, execution, validation, branching, human‑in‑the‑loop pauses, tool use, checkpoints, and durable state
• Build for reliability, observability, and scale: ensure internal AI platforms are production‑ready, observable, cost‑aware, and resilient, with strong tracing, state management, failure handling, and operational visibility
• Define patterns, abstractions, and best practices that make it easier for development teams to safely and consistently use AI in their day‑to‑day workflows
• Partner across engineering, platform, security, and product: work closely with development teams to understand their workflows, identify leverage points, and build tools that remove friction from software delivery

What This Is Not

• This is not a research role focused on training models from scratch
• This is not a role building isolated AI features for a single product line
• This is not prompt experimentation without ownership of production systems
• This is not a purely advisory or architecture‑only role
• This is a hands‑on software engineering role focused on building AI‑enabled internal tools for development teams

What You Bring

• Strong software engineering fundamentals: deep experience building production‑grade backend systems, APIs, workflow engines, internal platforms, developer tools, or distributed systems
• Experience building tools for engineers: understanding developer workflows and building systems that improve engineering velocity, reliability, delivery quality, or operational awareness
• AI systems experience: built or integrated LLM‑powered systems, agentic workflows, retrieval patterns, tool‑use flows, or AI‑assisted automation in production or near‑production environments
• Agentic Software Delivery Patterns: understanding and applying emerging agentic software delivery patterns, including graph‑based coding‑agent workflows, non‑interactive coding agents, and software‑factory‑style approaches
• Platform mindset: thinking in terms of reusable capabilities, paved paths, shared abstractions, durable systems, and long‑term adoption across engineering teams
• Workflow and orchestration expertise: managing state, execution, retries, branching, validation, and human gates in complex multi‑step systems
• Production mindset: designing for reliability, observability, security, cost, latency, and maintainability from the beginning
• Bias toward enablement: caring about helping other engineers move faster and produce better work, building tools that are practical, usable, and adopted

Bonus Points

• Experience building internal developer platforms, CI/CD systems, deployment tooling, workflow engines, service catalogs, or software delivery intelligence platforms
• Experience with agentic workflow systems, graph‑based execution, durable orchestration, or human‑in‑the‑loop automation
• Experience with LLM observability, evaluation, prompt/version tracking, model routing, or cost controls
• Experience integrating with source control, work tracking systems, CI/CD platforms, deployment systems, security scanners, or service dependency graphs
• Experience with OpenTelemetry, platform portals, internal control planes, or developer experience tooling

What Success Looks Like

• Development teams move faster: teams use internal AI tools to plan, review, validate, ship, and understand changes with less manual effort and fewer handoffs
• Software change becomes easier to understand: teams have clear, reliable answers to what shipped, when, who approved, what changed, and what depends on it
• AI‑assisted workflows become durable and trustworthy: long‑running AI workflows execute reliably, pause for humans, resume safely, branch when needed, and provide clear visibility into what happened
• Internal tools become the default path: AI‑enabled platform capabilities become trusted parts of how engineering teams build, ship, and operate software
• AI improves engineering leverage: AI becomes embedded in how development teams work, not as isolated experiments, but as reliable internal software that improves delivery, quality, and operational confidence

Why This Matters (Built‑in AI culture)

Engineering teams are most effective when they have great tools. At ABC Fitness, we are building internal AI‑powered platforms that help developers understand systems, automate complex workflows, and deliver software with greater confidence. If we get this right, AI will not be a collection of disconnected experiments. It will become part of the internal engineering fabric, helping teams ship better software, move faster, and operate with more clarity.

Compensation

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 zł430,000 - zł460,000 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
• Parental & Pawternity Leave – we offer leave 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, and many more
• Medical/Dental/Vision coverage
• EAP – we get you help when you need it
• Calm App +4 – enjoy tranquility with a Calm App subscription for you and up to 4 dependents over the age of 16
• And more – many benefits we couldn’t even fit here

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, or 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 Glofox, Ignite, Trainerize, and Evo. Let’s make your fitness vision a seamless reality, together. Learn more at abcfitness.com.