Senior Flutter Developer

Posted One Month Ago
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Mumbai, Maharashtra, IND
In-Office
Senior level
Fitness • Healthtech • Information Technology • Payments • Software
Powering every wellness journey.
The Role
Owns quality and reliability for a multi-platform fitness SaaS product. Responsibilities include building Playwright automation frameworks, conducting JMeter load tests, validating payment gateway and financial workflows, testing asynchronous Kafka integrations, maintaining traceable test plans, managing regression tiers and defect triage, and integrating automated tests into CI/CD pipelines.
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 spans Angular web dashboards, two Flutter mobile apps, and a high-throughput .NET Core backend, all built to run the financial engine of fitness clubs worldwide. As a senior SET, you'll own the quality and reliability of that platform, with a sharp focus on the accuracy and security of our payment systems.

You'll build and maintain our automation frameworks in Playwright and JMeter, using AI tools like Cursor to speed up test generation while keeping suites deterministic and easy to maintain.

What you'll do

•      Architect and maintain a single codebase that powers dozens of regional whitelabel clients, managing build-time flavor configurations through CI/CD pipelines like Fastlane
•      Integrate secure payment SDKs such as Stripe, building Apple Pay and Google Pay checkout flows for retail purchases and subscriptions
•      Drive feature delivery across both the member app and staff app, working through complex logic for POS, multi-club access, and real-time scheduling
•      Implement Clean Architecture and state management patterns like Bloc or Riverpod to handle complex, asynchronous UI states
•      Manage network layers with Retrofit and maintain reliable code-generation workflows for stable, conflict-free builds
•      Champion automated testing across unit, widget, and integration levels to keep releases reliable
•      Profile and optimize app performance for large datasets, keeping rendering smooth and memory use efficient across devices

What you'll bring

•      6 to 8 years of software engineering experience, including at least 4 years with Flutter and Dart in production
•      Experience building multi-tenant or white labeled mobile apps from a single codebase, with familiarity deploying to the App Store and Google Play
•      Hands-on experience integrating native payment SDKs and mobile wallets, including handling 3D Secure authentication and transaction errors
•      Experience using AI coding assistants in production, with the Dart and Flutter fundamentals to keep AI-assisted code performant and maintainable
•      Strong understanding of mobile system design, state management, and dependency injection
•      Working knowledge of native iOS (Swift or Objective-C) and Android (Kotlin or Java) for platform channels and native integrations

Nice to have
•      Experience in the fitness, wellness, or club management software industry
•      Understanding of event-driven backend architectures like Kafka, to align mobile caching with backend data streams

Skills Required

  • 6+ years of software testing and automation experience in a complex SaaS environment
  • Hands-on expertise with Playwright and TypeScript, including page object models, fixtures, and assertions
  • Experience configuring and analyzing distributed load tests with JMeter
  • Experience testing payment gateways and financial workflows, including billing, refunds, and subscriptions
  • Experience using AI coding assistants to generate and maintain automated scripts
  • Understanding of RESTful API testing and asynchronous messaging systems
  • Experience with mobile test automation frameworks for Flutter apps
  • Familiarity with fitness, gym management, or POS retail software
  • Knowledge of PCI-DSS compliance and its impact on software testing and data handling

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.

  • Leave & Time Off Breadth — Time off options such as unlimited PTO, paid holidays, and paid parental leave are prominently offered, and these policies are often experienced positively. Flexible scheduling and volunteer days are also noted as part of the package.
  • Wellbeing & Lifestyle Benefits — Wellness support includes fitness reimbursements and an Employee Assistance Program, alongside remote and flexible work options. These elements are frequently highlighted as supporting work–life balance.
  • Healthcare Strength — Health coverage is presented as comprehensive with medical, dental, and vision plans and is often viewed favorably. Employer materials emphasize strong coverage paired with wellness-oriented perks.

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The Company
HQ: Birmingham, AL
800 Employees
Year Founded: 1998

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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