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Head of Operations overseeing, ensuring top-notch services and transforming CK operations area (Project Management, Quality Assurance, Resource Planning, and Delivery) with over 18 years of professional experience from international organizations and Big 4 consulting in operational transformations, Target Operating Models, change management, process excellence, and strategy development. In his free time, Michał is into crafting furniture, jogging, riding a bicycle, and spending quality time with his wife, kids, and two dogs.
Senior IT Project Manager with hands-on experience in complex projects delivery. Believes that transparent communication is the key to success. As the System Engineer, she prides herself on an analytical mind with excellent problem-solving skills. In her spare time, she either teaches ballroom dancing or flies in a wind tunnel.
Ambitious IT Project Manager with big dreams. Responsible for overseeing all aspects of project planning and execution using her coordination, leadership, and motivational skills. Experienced with Scrum and Kanban with a broad understanding of the principles and objectives of these frameworks. An active member of PMI Poland, responsible for the Facebook and Linkedin communication. She loves snowboarding in winter and canoeing in summer.
PM with a customer-centric approach. She understands the importance of teamwork and always lives up to her commitments. While focused on the day-to-day tasks, she ensures that the project's goal and mission are always remembered. Used to present live demos in front of big audiences, so she's always open to public speaking challenges. Besides work, she enjoys rollerblading, skiing, and dance classes, which help her stay active all year.
Project Manager responsible for the successful delivery of the project. She appreciates the uniqueness of people and believes that together we can achieve more than alone. A fan of well-organized processes and organising things in such a way that they are not as overwhelming as they may seem. If she had to choose one (the only) program she would use for the rest of her life, it would probably be Excel. Enjoys good books, long walks and spending time with loved ones.
Seasoned scrum master, project manager, and business analyst. Happy to share his experiences collected over 12 years in IT across Poland, Switzerland, and Germany - be it through 1:1 mentoring, on-the-job coaching, or through training/lecture setup. Life-long learner, achiever, relator, believer, and analytical mind leveraging a no-nonsense approach. Passionate system thinker, jack of all trades - master of some. Origami fan, rock'n'roll dancer, student of genetics and rare diseases.
An experienced PM who gained skills working in banking corporations and software houses. Likes order - especially in the product design backlog. :-) Creating and optimizing processes, and building relationships through daily cooperation with interesting people of Callstack. What he values in managing projects is that you can always learn something new. He truly believes in the mighty power of Team Spirit. Conducting many different business and tech projects.
Experienced Business Analyst with Business Intelligence background. Maintainer of good agile practices within projects. Big Data Analysis expert. Not afraid of any challenges, with personal motto:" Keep calm and keep being agile". Establishing service management infrastructure in Poland - Global Network and Account Management division in one of top Swiss Bank. Renaissance soul - love to express myself with art, preparing top chef meals, meditation & music.
Tech Consultant with over five years of experience in supporting startups and enterprise companies with a background in web development and FinTech. Passionate about building backend services and FinTech apps. Can help with Python, Django, Docker, AWS, and FinTech Infrastructure. Stripe Certified Professional Developer. Loves to travel and dance.
Head of Operations overseeing, ensuring top-notch services and transforming CK operations area (Project Management, Quality Assurance, Resource Planning, and Delivery) with over 18 years of professional experience from international organizations and Big 4 consulting in operational transformations, Target Operating Models, change management, process excellence, and strategy development. In his free time, Michał is into crafting furniture, jogging, riding a bicycle, and spending quality time with his wife, kids, and two dogs.
Started working as a QA in 2017. Has an experience in the automotive, financial, medical, and e-commerce fields. In his past, Mateusz tested a progesterone measurement device for the Federal Ministry of Health and new and prototyped Audi and Porsche vehicles. Fun fact: he likes Star Wars and does not drink alcohol :)
QA Tester, passionate about improving software, finding and fighting edge cases. She treats bugs like Pokémons — Gotta Catch 'Em All! Currently developing towards test automation, diving into programming and new tools. Unlike most, her energy drink is tea — she can drink up to 5 cups a day. Her main hobby is learning interesting facts about countries around the globe. She is also a happy dog owner, so she really likes to spend time outside.
As the CEO of Callstack, Kris brings in more than two decades of experience in multinational organizations, where he held several senior management positions in general management, sales, business & corporate finance advisory. His career includes successful leadership of major change management and transformation programs as a Senior Executive, CEO, and Supervisory Board Chairman. In his leisure time, Kris enjoys sharing his knowledge as a meditation teacher.
Market analyst and super specialist in finance. Passionate about numbers - all financial indicators (and not only ones) are always at her fingertips. She loves challenges and nothing is impossible for her. A great lover of sports and plants, who spread good energy and a dose of motivation every day.
Head of Operations overseeing, ensuring top-notch services and transforming CK operations area (Project Management, Quality Assurance, Resource Planning, and Delivery) with over 18 years of professional experience from international organizations and Big 4 consulting in operational transformations, Target Operating Models, change management, process excellence, and strategy development. In his free time, Michał is into crafting furniture, jogging, riding a bicycle, and spending quality time with his wife, kids, and two dogs.
Primarily responsible for planning and implementing strategies that will attract, engage, and develop employees. His main goal is to create and maintain people focused high-performance Callstack culture, where people are satisfied and engaged. He is known for providing practical support quietly and conscientiously, usually behind the scenes. Fan of photography, cycling, American history and development books. Father of two Teenagers and recent enthusiast of Berlin Halfmarathons.
Former IT Senior Project Manager with 9+ years of experience both in large multinational corporations and SMBs. Currently expanding his business expertise and utilizing networking skills in the Account Management Team. Based on his background, loves working with all sizes of customers on complex, strategic accounts. Has a knack for problem-solving and enjoys creative brainstorming. After hours amateur basketball player, with a passion for sitcoms, podcasts and tattoos.
Her mission is to build solid relationships and increase the company's visibility in the React Native Community. She's the brain behind our biggest event, the React Native EU conference, our podcast, and all activities with and for the Community. When there is free time, it's sport-time - Barbara is a great fan of wakeboarding, kitesurfing, roller skating, and HIIT workouts.
Marta is a data-driven Marketing Campaign Lead with years of experience growing organic traffic and conversions. She believes in constant improvement and innovation. Always on the lookout for new ways to promote and distribute our articles, podcasts, and e-books. She prefers chats over phone calls and long treks in the mountains over the hectic city pace.
Senior Content Marketer who takes care of content creation, distribution, and promotion in line with the best SEO and SEM practices. She's always on the lookout for new ideas and promotion strategies. Whenever possible, she does her aerial hoop classes and explores new places from her bucket list.
Senior Content Marketer focused on delivering value and sharing knowledge. When creating any form of content, whether it's an expert guide, a case study, or a webinar, she seeks to uncover and address the recipients’ needs and pain points. Passionate about creating user-centric content that guilds bridges between the brand and the clients. After hours, she draws, embroiders, cooks.
Primarily responsible for planning and implementing strategies that will attract, engage, and develop employees. His main goal is to create and maintain people focused high-performance Callstack culture, where people are satisfied and engaged. He is known for providing practical support quietly and conscientiously, usually behind the scenes. Fan of photography, cycling, American history and development books. Father of two Teenagers and recent enthusiast of Berlin Halfmarathons.
As an HR Business Partner, Adka provides a support for Callstack management and employees in all activities undertaken in the field of human potential management. Focused to handle everything from onboarding and benefits to compliance and employee relations. A big fan of Insights Discovery model, working intensively on implementing it to our company. :) Passioned about traveling and a big coffee lover!
HR Business Partner with the motto "People first”. The user of coaching and advisory methods in HR to develop employees. Discovers a person's hidden potential and talents and cares for work wellbeing. Psychometrist. Enthusiast and participant in the holistic school of psychotherapy. Fan of blues and guitar jazz music. Reader & books writer.
HR Administrator with a helping hand, always ready to support all the Callstackers. She takes care of typical duties including managing various HR documents, updating them, keeping a track record of personnel data, managing payroll, answering employees’ questions and helping new hires get inducted into our workforce. In her free time, Angelika likes hiking or watching classic films.
An anthropologist by education with a passion for HR. Has ten years of professional experience in the HR field, gained in various sectors and in various functions. Her role is to support the business in achieving strategic goals by implementing HR solutions and recommending appropriate actions. A certified DISC D3 consultant. An owner of a one-year-old beagle who has changed her world and increased time spent on walks.
Experienced manager, who believes in people and their potential to grow. She is skilled mainly in the area of recruitment, employer branding and communication. She gained her experience both in the corporate-, product related- and software houses environment. A huge fan of work-life balance and remote-first approach. When not working, she is most probably playing tennis or spending valuable time with her family and friends.
Employer Branding Specialist with the wide range of experience in HR as IT Recruiter, HR Admin but also Hotel Manager. Passion to great communication, IT industry and wellbeing trends led her to current position. Always in the heart of everything, ready to help and take up the hardest cases. Inspired by people and situations. Celebrates great childish enthusiasm in her everyday. A dog lover who became a cat mom by accident.
As a part of HR team mainly responsible for moving candidates through the recruitment processes smoothly and building the best Callstack team. Always excited about meeting new people. In less than 2.5 years at Callstack, witnessed the expansion of the team from 40 to more than 130 people. Passionate about dancing, going to the gym and traveling.
A Recruiter with several years of experience in HR, specialized and focused on IT recruitment for over 5 years. Passionate about creating the most friendly and informative recruitment processes. Also interested in the basics of programming. Conducted and facilitated retrospective sessions for non-technical departments in the process of introducing scrum to the company. In her free time Martyna is passionate about DIY.
IT Sourcer aka Sorcerer of Callstack 🔮, as part of the HR team, is mainly responsible for finding the best developers to our dream company. Constantly seeking for new ways/sources to recruit candidates. Privately, loves to play on the console, listen to R&B music from the 90's and getting into Japanese culture.
IT Sourcer responsible for searching experienced React Native Developers and QAs. Passionate about copywriting and recruitment data analysis. After work, a dachshund's mama, interested in true crime documentaries and stand-up comedy. Besides, she's a soul and R'n'B music lover always ready to dance ;).
Market analyst and super specialist in finance. Passionate about numbers - all financial indicators (and not only ones) are always at her fingertips. She loves challenges and nothing is impossible for her. A great lover of sports and plants, who spread good energy and a dose of motivation every day.
Has an experience in working in both: front and back-office. Feels better with spreadsheets, but always there to help with invoices, payments, and paperwork. Likes multitasking and ad-hoc tasks, but also appreciates the regular cycle of financial work. Trying to become a spreadsheet hero. A cat person who loves to cook - everything tastes better with cat hair in it! ;)
Always smiling office manager who deals with business documents and correspondence, supplies management and takes care of the office space to be the best place to work! She is a dog person, currently teaching her adopted dog Max how to survive in the urban jungle. Ola loves sports too, especially softball and yoga.
Finance and Administration Specialist with few years of experience in accounting and analysis. Interested in development in the field of controlling and reporting, she’s willing to become an Excel expert. Anna loves trekking and climbing, and her big dream is to own a little house in the mountains :)
IT Administrator skilled at managing networking systems, maintaining security systems, updating hardware and software, and managing databases. Passionate about technology and cybersecurity. Always looking for the opportunity to learn and develop new skills in ITSM and security to stay ahead of constantly changing cyber threats. A warm weather enjoyer, always trying to take advantage of it and ride his bike, hike, or sip a good craft beer.
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