Backend Engineer

About Welltech

About Welltech
Welltech is a global wellness technology company with Ukrainian roots. Our mission is to build and scale wellness apps globally through state-of-the-art, tech-driven performance marketing.
We are one of the most established players in the wellness app space, and we are accelerating. Over 25.5 million people across the world use our apps — Muscle Booster, Yoga-Go, and WalkFit — to build healthier habits, move more, and feel better every day. Every subscription represents a real person making a real change in their life, and we take that seriously.
With 500+ people across hubs in Cyprus, Ukraine, Poland, Spain, and the UK, we combine the scale of a market leader and the drive of a team that's just getting started.

Why join us?
Welltech is where your work reaches millions of real people.
We're looking for Well-Makers. You'll own decisions, outcomes, and the learning that comes with both. You'll move fast, because action beats perfection here. You'll say what you think, hear the truth back, and get better for it. And when the targets are big — and they are — you won't chase them alone.
If you want a job, there are easier places. If you want to go big — and do it together — this is it.

Position

We’re seeking a Backend Engineer who loves building reliable, scalable systems that power great user experiences. You’ll design and support APIs, manage cloud infrastructure, and collaborate across teams to deliver personalized wellness features to millions of users.

You have strong Python skills, experience with relational databases, and enjoy working in cloud-native environments. You value clear communication, fast learning, and finding the right tool for each challenge - even if it means stepping outside your comfort zone.

Key responsibilities:

• Spearhead development of a user-centric initiative: Collaborate with product, engineering, and data teams to spearhead development of a new initiative revolutionizing our products.

• Contribute to System Architecture: Collaborate on designing reliable, maintainable, and scalable systems to support millions of users worldwide.

• Integrate Cloud Services: Leverage AWS services (e.g. Lambda, API Gateway, S3) to build modern, serverless solutions.

• Collaborate Cross-Functionally: Partner with product managers, designers, data experts, and content teams to bring cohesive, user-centric experiences to life.

• Prioritize Sustainable Quality: Write clean, maintainable, and scalable code, with a focus on continuous improvement and long-term reliability.

• Contribute to Team Success: Work effectively with teammates and stakeholders to achieve shared goals. Share knowledge openly, communicate clearly, help resolve obstacles, and foster constructive, respectful discussions to solve problems together.

Your qualification

• Product Mindset: Proven ability to translate user needs into impactful features with a strong focus on delivering value.

• Backend Engineering Expertise: Strong experience designing and building scalable backend systems in Python with a solid understanding of API design and system architecture.

• Cloud Infrastructure Experience: Familiarity with cloud services, especially AWS (e.g. Lambda, API Gateway, S3, CloudFormation).

• Database Knowledge: Experience working with relational databases such as Postgres, and familiarity with SQLAlchemy or other ORMs.

• Engineering Culture Contributor: You help improve team workflows and elevate code quality by contributing to shared practices and fostering collaborative ways of working.

• Communication Skills: Strong English communication skills to work effectively with an international, agile team.

What we offer

• 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!

Additional details

Candidate journey: Recruiter call --> Live Code Review --> System Design interview---> Meet the hiring manager

Check out some of our products

Muscle Booster — https://musclebooster.fitness/ 

Yoga-Go — https://yoga-go.io/ 

WalkFit - http://walkfit.pro