Senior iOS 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

Key responsibilities:

• Shape and co-own codebase of a greenfield product as a member of a cross-functional product-engineering team

• Drive turning user needs into solutions end-to-end, from product discovery to supporting our code running in production

• Drive design and development of a greenfield mobile app, and contribute significantly to the system design of the overall product

• Be a trusted partner for product, design, data and other functions, as well as other teams

• Support growth of your team and colleagues

• Work with and contribute to a modern technology stack with Swift, SwiftUI

• Collaborate with other Engineers to constantly push the boundary of technical excellence across iOS and beyond

• Implement cool ideas and have impact on millions of users in a customer-centric environment with high degree of ownership

Your qualification

• Proven impact building new and/or refactoring existing large scale customer-facing products

• Very strong product & business mindset. Proven ability to drive building of successful products working closely with Product Managers, Designers, Domain experts

• Relevant experience in iOS development in companies that required a strong product mindset

• Ability to choose the right tool for each challenge, learn new tools and technologies 

• Ability to manage risks, trade-offs and propose efficient solutions

• Strong advocate of design for testability, automated tests, shift left and willingness to work in an environment where engineers own the quality end-to-end

• Ability to learn fast, collaborate cross-functionally and communicate effectively

• Great understanding of object-oriented, functional and declarative paradigms, design patterns and architectures such as MVVM/MVI, DI

• Strong experience with TCA and composable, modular UI architectures in general

• Ability to craft clean, maintainable code

• Strong ability to design for reliability and scalability 

• Strong grasp of Swift including concurrency, networking, persistence, performance optimization

• Experience building complex, dynamic, and interactive UIs with SwiftUI

• Experience implementing and advocating for methodologies that allow fast iterations and maximise developer productivity, such as eXtreme Programming, Trunk Based Development, CI/CD mindset, BDD, TDD

• Strong advocate of technical patterns and solutions that optimise for pace of experimentation (e.g. backend-driven UI architecture, modularization, high cohesion/low coupling)

• Great command of English

Will be a plus

• Knowledge of libraries, tools and approaches for building beautiful animations: Core Animation, Lottie, SwiftUI animations etc

• Experience with backend development

• Experience with data and/or multimedia

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 --> Meet a Hiring Manager--> Skills assessment--> Live coding

Check out some of our products

Muscle Booster — https://musclebooster.fitness/ 

Yoga-Go — https://yoga-go.io/ 

WalkFit - http://walkfit.pro