
Kolomolo AB · Kraków
🚀 DATA PLATFORM ENGINEER - KRAKÓW, POLAND Location: on-site or online Contract: 6-9 months JOIN THE FUTURE OF DIGITAL TECH WITH KOLOMOLO At Kolomolo,...
Location: on-site or online
Contract: 6-9 months
At Kolomolo, we don’t just follow trends - we set them. As a global supplier of IT services and digital modernization solutions,
we help businesses embrace cutting-edge technology to optimize their operations. Now, we are growing and looking for fresh talent
to grow with us.
Are you proactive, tech-savvy, and eager to build your career in IT? This role could be your perfect fit.
We are looking for a Senior Data Platform Engineer (over 2.5 years of experiences) to join our team on-site in Kraków, Poland.
This is an immediate start, 6-9 month project assignment.
You will play a key role in building the infrastructure for our modernisation stack. The work focuses on creating a templatised
infrastructure that can be deployed across different departments with flexibility and scalability.
Proven experience as a Platform Engineer, ideally in cloud-native environments
Strong knowledge of Terraform and infrastructure-as-code practices.
Experience with Databricks and Unity Catalog.
Ability to design templatised solutions for multi-department deployments.
Understanding of networking, storage (buckets), policies, and cluster management.
Hands-on experience with deployment automation.
Competitive salary and benefits Career development opportunities in a growing tech company Continuous learning culture:
mentorship, internal training, and certifications Office perks: great coffee, tea, fresh fruit, snacks, and a fun atmosphere
Regular team events and a social, supportive work culture
🌟 Why Join Kolomolo?
At Kolomolo, we prioritize innovation, agility, and autonomy. Our teams have the freedom to own their work, share ideas, and make
meaningful contributions. Inspired by Scandinavian values, we believe in work-life harmony and creating an inclusive culture where
everyone thrives.
You will be part of a passionate, skilled, and friendly team that works hard and celebrates together. Here, you can build your
career on your own terms, with opportunities to grow, learn, and make a real impact.
collaboration are in our DNA.
mutual respect and trust.
individual, regardless of background, identity, or experience feels valued, respected, and empowered to thrive.
Join Kolomolo and elevate your career with cutting-edge technology, a supportive team, and a company that truly values your input.
Ready for the next step? Apply now and start an exciting journey of growth and innovation with us!
🚀 SENIOR COBOL DEVELOPER Location: Poland (Remote) Contract: Full-Time JOIN THE FUTURE OF DIGITAL TECH WITH KOLOMOLO At Kolomolo, we don’t just follow trends - we set them. As a global supplier of IT services and digital modernization solutions, we help businesses embrace cutting-edge technology to optimize their operations. Now, we are growing and looking for fresh talent to grow with us. Are you proactive, tech-savvy, and eager to build your career in IT? This role could be your perfect fit. ABOUT THE ROLE As a Senior COBOL Developer, you will play a pivotal role in ensuring the reliability, performance, and modernization of enterprise systems that support finance, operations, and transaction processing. You will manage the full lifecycle of COBOL applications from requirement analysis, architecture, and development to integration, performance optimization, and modernization initiatives. You will also have opportunities to influence system design, mentor junior developers, and drive innovation in environments where COBOL remains critical to business operations. This role is intended for talent pooling purposes; therefore, it does not involve an active recruitment process at this time. WHAT YOU’LL BE DOING • Design, develop, and maintain COBOL applications for batch and online processes. • Analyse business requirements and translate them into technical designs and flowcharts. • Debug, troubleshoot, and resolve production incidents, including batch and online abends. • Optimize system performance, scalability, and processing efficiency. • Integrate COBOL systems with middleware, distributed systems, and modern platforms. • Create and maintain high-quality technical documentation and design specifications. • Support full SDLC processes, from analysis to deployment and testing. • Collaborate with QA, Business Analysts, System Architects, and DevOps teams. • Mentor junior developers, review code, and promote engineering best practices. TECHNOLOGIES & TOOLS • Mainframe & Languages: COBOL, JCL, CICS, DB2, VSAM, IMS, TSO/ISPF, z/OS • Integration & Messaging: MQ Series, distributed system interfaces • Processes & Frameworks: SDLC (Waterfall & Agile), IT Service Management / ITIL, batch & real-time processing WHAT WE’RE LOOKING FOR • 5+ years of hands-on COBOL development experience in enterprise environments. • Expertise in COBOL, JCL, CICS, DB2, VSAM, IMS, z/OS. • Strong debugging experience resolving complex production issues. • Experience designing and documenting large-scale systems. • Ability to integrate COBOL systems with modern technologies. • Excellent communication and collaboration skills. • Passion for clean, maintainable code and system reliability. NICE TO HAVE • Experience in finance, banking, insurance, or government systems. • Knowledge of ITIL or service management practices. • Exposure to modernization and cloud migration initiatives. • Experience mentoring junior developers. 🌟 WHY JOIN KOLOMOLO? At Kolomolo, we prioritize innovation, agility, and autonomy. Our teams have the freedom to own their work, share ideas, and make meaningful contributions. Inspired by Scandinavian values, we believe in work-life harmony and creating an inclusive culture where everyone thrives. You will be part of a passionate, skilled, and friendly team that works hard and celebrates together. Here, you can build your career on your own terms, with opportunities to grow, learn, and make a real impact. OUR FLAT STRUCTURE & THE CULTURE OF INCLUSION At Kolomolo, we break the corporate mold. We offer: * Agile Teams & Autonomy: No micromanagement. You’ll own your projects and enjoy the freedom to innovate. * Work-Life Harmony: Inspired by Scandinavian values, we prioritize balance and flexibility, where remote work and asynchronous collaboration are in our DNA. * Learning & Growth: Continuous learning is at our core. We reward hard work, value smart ideas, and foster an environment of mutual respect and trust. * Inclusive Culture: We believe in DEI: diversity, equity and inclusion. We are committed to creating an environment where every individual, regardless of background, identity, or experience feels valued, respected, and empowered to thrive. Join Kolomolo and elevate your career with cutting-edge technology, a supportive team, and a company that truly values your input. Ready for the next step? Apply now and start an exciting journey of growth and innovation with us!
This is Adyen Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition. For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster. Sitting at the intersection of Data Engineering, Backend Engineering, and Systems Engineering, Data Platform Engineers at Adyen build the foundational layer of tooling and processes for our on-premise Big Data Platforms. These tools support 10s of products, 100s of developers, and 1000s of daily jobs that add to Adyen’s strong portfolio of capabilities. You’ll collaborate with data engineers and ML scientists and engineers to build and roll-out these tools. Along with DataOps Engineers, you’ll develop and operate multiple big data platforms, of which the biggest is 500+ nodes, with 25k+ CPU cores, 240+ TBs of RAM, and 23+ PBs of storage capacity, running tens of thousands of spark jobs a day. What you’ll do You’ll be asked to both build new tools and improve the existing tooling. This role is perfect for you if you're passionate about few of the following: * Develop and maintain scalable and high performance big data platforms. * Work with distributed systems in all shapes and flavors (databases, filesystems, compute, etc.) * Identify opportunities to improve continuous release and deployment environments * Build or deploy tools to enhance data discoverability through the collection and presentation of metadata * Introduce and extend tools to enhance the quality of our data, platform-wide * Explore and introduce technologies and practices to reduce the time to insight for analysts and data scientists * Develop streaming processing applications and frameworks * Experience in infrastructure and large-scale private cloud systems Who you are * At least 6+ years experience with Python object oriented programming. * Team player with strong communication skills * Ability to work closely with diverse stakeholders you enable (analysts, data scientists, data engineers, etc.) and depend upon (infrastructure, security, etc). * Experience developing and maintaining: * Distributed data and compute systems like Spark, Trino, Druid, etc * Data modelling tooling * DevOps pipelines and development ecosystems. * Real-time and batch data pipelines (via Kafka, Spark streaming) with an eye for frameworks, and emphasis on user friendliness and quality. * Kubernetes ecosystem (k8s, docker), and/or Hadoop ecosystems (Hive, Yarn, HDFS, Kerberos). Our Diversity, Equity and Inclusion commitments Our unique approach is a product of our diverse perspectives. This diversity of backgrounds and cultures is essential in helping us maintain our momentum. Our business and technical challenges are unique, and we need as many different voices as possible to join us in solving them - voices like yours. No matter who you are or where you’re from, we welcome you to be your true self at Adyen. Studies show that women and members of underrepresented communities apply for jobs only if they meet 100% of the qualifications. Does this sound like you? If so, Adyen encourages you to reconsider and apply. We look forward to your application! What’s next? Ensuring a smooth and enjoyable candidate experience is critical for us. We aim to get back to you regarding your application within 5 business days. Our interview process tends to take about 4 weeks to complete, but may fluctuate depending on the role. Learn more about our hiring process here. Don’t be afraid to let us know if you need more flexibility. This role is based out of our Amsterdam office. We are an office-first company and value in-person collaboration; we do not offer remote-only roles.
In 2018, Bitvavo launched the first version of its digital assets trading platform, to bridge the gap between traditional currencies and digital assets. By offering transparent fees, a wide range of assets and an easy to use platform, Bitvavo is making the currency of the future accessible for everyone. In two years' time, Bitvavo has established itself as the market leader in the Netherlands and one of the largest in Europe, with over one million users exchanging tens of billions of digital assets a year. Our team, located in Amsterdam, is looking for self-driven, talented people who can help make digital assets available for everyone. ABOUT THE OPPORTUNITY We are looking for a talented Senior Data Platform Engineer to join the Data Platform team in our established Platform Engineering team. We are an exchange. System scalability, performance and engineering productivity matter in everything that we do. Our platform domain is committed to fostering autonomy by providing engineering teams with paved paths to develop robust, secure, compliant, and scalable systems. We're seeking exceptional talent to join us in making this a reality WHAT YOU’LL BE DOING * Build a self-service Data Platform that enables teams to build data products as easily and reliably as possible. * Continuously evolve our platform to support new data use cases, including real-time analytics, batch processing, and machine learning. * Build and maintain a secure, scalable, and compliant data infrastructure using Infrastructure as Code and automation. * Enable data ingestion, processing, and consumption at scale. All are offered entirely as self-service. * Mentor teammates by sharing technical knowledge, providing constructive feedback, and driving engineering excellence. WHAT WE LOOK FOR * Experience with one or more programming languages. We primarily use Python (Java is a plus), but we value problem-solving ability over syntax familiarity. * Strong understanding of data engineering principles, including distributed data processing, stream processing, and data storage systems. * Fluency in using infrastructure as code tools (like Terraform) and container orchestration platforms (like Kubernetes) in a cloud-first environment. * Exceptional communication skills. We expect engineers to take ownership of their work end-to-end and communicate directly with stakeholders. * High sense of ownership and accountability. We value engineers who take initiative and advocate for the long-term health of our data ecosystem. We care more about your engineering mindset than your knowledge of any specific tool or technology. If this sounds exciting, even if you do not check every box, let's talk! At Bitvavo, we believe that diverse perspectives drive innovation, foster creativity, and lead to better outcomes. We are committed to building a team that reflects the diversity of the communities we serve and creating an inclusive environment where everyone can thrive. We welcome applicants of all backgrounds, identities, and experiences. Regardless of race, ethnicity, gender, sexual orientation, age, religion, ability, or any other characteristic. Join us and be part of a team that values and celebrates your unique contributions. Bitvavo does not accept resumes from staffing, search, or recruitment firms without a signed agreement. If you send us a resume without such an agreement, we may contact the candidate directly without any obligation whatsoever and no fee of any kind will be paid should we hire the candidate. WHAT WE OFFER At Bitvavo, we believe in attracting, motivating and retaining talented people through market-competitive offerings that go beyond compensation alone. To learn more about our total rewards package and the benefits we offer, visit our Life at Bitvavo page.