The Role
Own and architect payment and billing infrastructure for a global fitness management platform. Responsibilities include integrating Stripe and Razorpay, processing webhooks, preventing duplicate charges, building .NET Core REST APIs, enforcing PCI-DSS through tokenization and credential vaulting, developing Kafka event-driven services, and optimizing MySQL data models and performance for a multi-tenant SaaS platform.
Summary Generated by Built In
Daxko builds the software that powers fitness, wellness, and community organizations—everything from member management and payments to digital engagement and analytics. From small studios to the largest associations, we help thousands of fitness businesses streamline operations, enhance member experiences, and drive sustainable revenue growth.
You'll join Grip Technologies Pvt. Ltd., a Daxko subsidiary, working on FitnessForce, the club management platform used by gyms and fitness businesses around the world.
About the role
FitnessForce runs the daily operations of gyms and fitness clubs globally, from recurring membership billing to point-of-sale retail. As a senior backend developer on our revenue operations team, you'll own the payment and billing infrastructure that keeps transactions secure, accurate, and reliable across dozens of markets.
You'll work directly with global payment gateways, PCI compliance, and financial data at scale, using AI coding tools like Cursor to move fast without compromising security.
What you'll do
- Architect integrations with global payment gateways, including Stripe and Razorpay, to handle recurring subscriptions, retail transactions, and refunds
- Build reliable webhook processing and idempotency safeguards that prevent duplicate charges and keep transactions consistent
- Design and maintain REST APIs in .NET Core that support our Angular and Flutter apps
- Enforce PCI-DSS compliance through server-side tokenization and secure credential vaulting, so raw card data never touches our servers
- Build event-driven services with Apache Kafka to keep financial ledgers and billing states in sync in real time
- Architect data models and optimize MySQL performance across a multi-tenant platform
- Use AI coding tools to accelerate delivery of complex financial systems, while owning the security and maintainability of everything you ship
What you'll bring
- 6 to 8 years of backend engineering experience in a SaaS product
- Deep hands-on expertise in C# and .NET Core
- A strong track record integrating payment gateway APIs, including subscription lifecycles, webhooks, and multi-currency transactions
- Experience using AI coding assistants in production, with the fundamentals to debug and support AI-generated code in sensitive financial workflows
- Strong relational database skills, including transaction management and query optimization in MySQL
- Experience building multi-tenant systems and working with event-streaming platforms like Kafka
Nice to have
- Familiarity with Docker, container registries, and CI/CD pipelines
- Experience in the fitness, club management, or membership software industry
- Understanding of how backend APIs connect with Flutter and Angular front ends
Skills Required
- 6 to 8 years of backend engineering experience in a SaaS product
- Deep hands-on expertise in C# and .NET Core
- Experience integrating payment gateway APIs, including subscription lifecycles, webhooks, and multi-currency transactions
- Experience using AI coding assistants in production
- Strong relational database skills, including transaction management and query optimization in MySQL
- Experience building multi-tenant systems
- Experience with event-streaming platforms such as Kafka
- Familiarity with Docker, container registries, and CI/CD pipelines
- Experience in the fitness, club management, or membership software industry
- Understanding of backend APIs connecting with Flutter and Angular front ends
Daxko Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Daxko and has not been reviewed or approved by Daxko.
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Leave & Time Off Breadth — Time off and flexibility, including unlimited PTO (manager-approved), paid holidays, sick leave, and volunteer time, are described as strengths. Remote and hybrid options further support work–life balance.
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Wellbeing & Lifestyle Benefits — Lifestyle perks such as a monthly fitness or wellness stipend, gym reimbursement, internet stipend, wellness days, and related programs align with the company’s wellness focus. These offerings are seen as meaningful quality-of-life supports.
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Healthcare Strength — Comprehensive medical, dental, and vision coverage is provided alongside life and disability insurance. Additional supports like employee assistance and wellness resources contribute to a solid core package.
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The Company
What We Do
Daxko powers health and wellness throughout the world. Every day, our team members bring their passion and expertise to help health and wellness facilities operate smoothly and engage their members. Whether it’s supporting a fitness club, a community center, or a local boutique studio, Daxko is there, powering 40% of fitness and wellness facilities nationwide. We’re more than just a tech company; we’re committed partners, empowering wellness organizations to create meaningful, lasting impact in their communities.
Why Work With Us
At Daxko, you’re more than just an employee—you’re valued. We celebrate diversity, knowing it drives innovation. Your hard work is rewarded with competitive pay, benefits, and flexibility that fits your life. From a month-long break every five years to resources that help you grow, Daxko is where your career and well-being truly thrive.
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