Senior Backend Engineer (Python) at Welltech

Who Are We? We are Welltech — a global company with Ukrainian roots and a powerful mission: to move everybody to start and stay well for life. Today 25.5 million users have trusted Welltech to help them build healthy habits — a testament to the real value our innovative, engaging wellness solutions deliver every day. 🌍 With five hubs across Cyprus, Ukraine, Poland, Spain and the UK and a diverse, remote-friendly team of 700+ professionals, we continue to scale rapidly. Our innovative apps — Muscle Booster, Yoga-Go and WalkFit — empower millions to transform their lifestyles and unlock their personal wellness journeys. Welltech is where your impact becomes real. And our values clearly attest to that: we grow together, we drive results, we lead by example and we are well-makers. If this looks like you and you thrive in a fast-paced environment, you’ll fit right in at Welltech. Let’s build wellness for millions together. Why Welltech and why now? Imagine joining a team where your impact on global health and wellness is felt daily. At Welltech, we strive to be proactive wellness partners for our users, while continually evolving ourselves to push the boundaries of what’s possible. Today we are embarking on a journey to reshape our product into a highly personalized, coach-like experience that provides holistic care to our users across all aspects of wellness and fitness. To accomplish this we are starting two new teams: 1. Team focused on crafting the new disruptive product experience as well as the system powering it 2. Team on a mission to provide our users with world class wellness and fitness content through the new product experience It’s a greenfield opportunity to try to disrupt the wellness & fitness industry. We are looking for product minded, impact-driven engineers to join us on this journey! What We’re Looking For We are seeking a product-minded, impact-driven Senior Backend Engineer with strong experience in Domain Driven Design, cross-functional product development and Developer Productivity. In this role, you’ll collaborate with product, engineering, and data teams to spearhead the development of a greenfield product, evolve existing content management systems, and ensure our platforms remain robust, scalable, and efficient. You’ll be an advocate for highly iterative development approaches, data-driven decision-making in your team, fueling our mission to bring health and wellness to millions. Key Responsibilities: - Spearhead development of a greenfield product: Collaborate with product, engineering, and data teams to spearhead development of a greenfield, data and multimedia powered product in the wellness & fitness space - Cross-functional collaboration: Work closely with product managers, designers, software engineers, content producers, data experts, and infrastructure teams - Mentor & lead by example: Provide guidance to team members, lead team level product and engineering initiatives, influence coding standards, support your team in making critical decisions - Set us up to maximize the pace of experimentation: Advocate for and drive implementation of highly iterative development practices and technical solutions that can allow us to maximize the pace of experimentation while maintaining quality - Be a champion of Engineering Excellence: Advocate for and implement best engineering practices, foster a learning culture, and influence strategic technical decisions in your team. Ensure scalability, performance, and reliability of systems owned by your team Required Skills: - Strong product & business mindset: Proven ability to drive the building of successful products and/or platforms used by product teams, working closely with Product Managers, Designers, Domain experts to create value for customers - Domain Driven Design: comprehensive system design skills with proven impact building new and refactoring existing large-scale systems powering customer-facing products - Proven technical foundation: Strong hands-on engineering background on the backend, strong experience with relational and non-relational databases and AWS infrastructure (e.g. Lambda/API Gateway/SQS/SES/CloudFormation/CloudWatch) - Language and tool agnostic approach: Ready to pick the right tool for each challenge Experience with building efficient, scalable, reliable backend systems in Python or Kotlin is a plus. Our main language of programming is Python - System-level impact: Track record of influencing technical direction of your team and of effective collaboration with adjacent teams, with the ability to highlight risks, trade-offs and propose efficient solutions - Engineering culture & excellence: Demonstrated ability to shape and elevate engineering culture, methodologies, and best practices in your team - Developer productivity: Experienced in maximising developer productivity through the right technical choices, highly iterative development practices to achieve high pace of data-driven experimentation - End-to-end ownership and dealing with ambiguity: You thrive in ambiguous environments and get excited about figuring out solutions to complex problems, and taking a leading role in executing on them - (Nice to Have) Experience with Data and/or Multimedia Ready to make a transformative impact on global wellness? Join us at Welltech and help millions of users lead healthier, happier lives! As we are growing our hub in Cyprus, we are offering full relocation support for this role. You’ll receive assistance with everything from visa and paperwork to finding accommodation and settling in. Whether you’re moving alone or with your family, our team will ensure a smooth and stress-free transition. Join us in beautiful Cyprus and be part of an exciting new chapter as we expand our presence on the island! Candidate journey ⭕️ Recruiter call --> ⭕️ Live code review --> ⭕️ System Design Interview --> ⭕️ Meet the Hiring Manager Why You'll Love Working at Welltech: ✨ Why You’ll Love Being Part of Welltech: - Grow Together: Join a culture that champions both personal and professional growth. Here, you’ll thrive as we learn, evolve, and succeed together. - Lead by Example: No matter your role, your leadership matters. Every team member is empowered to inspire and make an impact. - Results-Driven: We’re all about achieving meaningful outcomes. It’s not just about the effort, but the difference we make every day. - We Are Well-Makers: Be part of a movement that’s creating a healthier, happier world. Together, we make well-being a reality! Check out some of our products Muscle Booster — [Upgrade to PRO to see link]  Yoga-Go — [Upgrade to PRO to see link]  WalkFit - [Upgrade to PRO to see link]