We don't follow best practices, we set them
We are cross-platform development leaders and contributors to the React Universe. If you’re ready to solve problems & build across platforms, you’ll fit right in.
Open positions
Join our team and help shape the future of cross-platform development.
A place for builders, learners, and leaders
At Callstack, we work with ambitious clients and contribute to the technologies we believe in. If you value ownership, community, and technical excellence, you’ll feel at home here.
We always play to win
We lead the market by delivering the highest performance and exceptional value, setting ambitious goals and taking ownership to achieve them.
Drive for personal growth
We take responsibility for our growth and success by owning our professional development, seeking feedback to improve, and prioritizing our well-being.
Build positive relationships
We prioritize respect, understanding, and care for those around us by treating each other with respect, actively listening, and showing empathy.
Innovate for future success
We shape the future by embracing the unknown, actively seeking and experimenting with new ideas while sharing the lessons we learn.
What I love most about Callstack is the constant opportunity to grow. You're surrounded by true experts, with chances to learn, share, and give back to the community. In just months, I felt included and made great friends along the way.
I was impressed by the growth opportunities at Callstack—people truly advance here. I started as an Office Manager and now lead my own team while growing in finance. If you're focused on development, Callstack will support and challenge you.
I love working at Callstack for the unique challenges and chance to explore cutting-edge tech. The community is amazing—conferences, podcasts, webinars—and the people truly care about you and the craft.
What I love most about Callstack is the experience and inspiration everyone brings. It creates an expert-driven, collaborative atmosphere full of opportunities and exciting challenges. It's the place for passionate, daring developers to thrive.
At Callstack, I’ve grown as an HR professional while being part of a supportive community that values well-being and development. The strong sense of belonging and lasting relationships make it more than a workplace—it’s a space where growth truly thrives.
I joined Callstack to build robust React Native apps used by millions—and found myself surrounded by talented, friendly teammates who turn any challenge into a shared adventure. Hosting the Callstack podcast and React Universe Conf recordings was an awesome bonus!
Not your average software company
You’ll work with top-tier companies, contribute to OSS, and take on projects that push you forward—all in a team that moves with purpose. And that’s just the beginning of a long list of perks of working at Callstack.
Remote-first by design
Work from wherever you do your best work. Our team spans 10+ countries, and remote is the default—not a perk. Some roles may require hybrid or in-office work, but unless it’s in the job description, you won’t be asked to return just because.
Workations and team events worth showing up for
From team-wide workations to internal meetups, we make space for deep work, real connection, and a little adventure. Each Callstacker gets a one-week workation in a villa somewhere in southern Europe.
Wellbeing & Development Budget
Use this flexible budget to invest in your growth, learning, and overall well-being, from courses to physiotherapy.
We’ve got your back, at work and beyond
Fully covered life insurance
We care about your future, which includes support for you and your family when it matters most.
Time off that actually supports you
You get 24 paid days off per year, plus up to 30 days of paid sick leave. No games, no stress—we want you to rest when you need to.
Private healthcare
We co-finance private healthcare plans for you and your family or provide an equivalent if you're outside Poland.
Sports allowance
Whether it’s a Multisport card or local equivalent, we help cover the cost of staying active.
Mental health support
Free access to the Helping Hand platform, including webinars and one-on-one sessions with licensed specialists.
Milestone Five Anniversary Program
Stay with us long-term and we’ll celebrate it with a special benefit made just for you.
Accounting cost refund
We help cover your accounting costs if you're working with us on a B2B contract.
React Universe Conf participation
You’ll have the chance to take part in React Universe Conf and stay close to what’s next in the React ecosystem.
Top-notch hardware
We’ll set you up with Apple gear so you can work comfortably and efficiently from day one.
Officially one of Poland’s coolest offices
Our Wrocław HQ took home a CBRE Office Superstar award.
It’s here if you want it—but remote is always an option.
Join the team building
the React Universe
We’re a team of trusted React and React Native contributors who care deeply about great code, Open Source, and solving real-world problems together.
