Data Platform Administrator

ComeOn Group; Katowice; Hybrid; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Company bonus

Quarterly team events

Remote-work bonus

Hybrid work model

Laptop and smartphone

Office events

Job summary

ComeOn Group in Stockholm (Hybrid) or Katowice, Poland, seeks a Data Platform Administrator to own MySQL and MongoDB across development and production, ensuring uptime, performance and secure data operations.

You will lead schema changes, large-table migrations, and data pipelines support, collaborating with developers, BI teams and DevOps, while growing into broader data engineering responsibilities.

Qualifications

• 5+ years of experience in MySQL and MongoDB administration.
• Experience with schema changes, large-table operations, performance tuning and migrations.
• Strong operational mindset: high-availability setups, backups and platform reliability.
• Comfortable in a fast-paced, hands-on environment.
• Exposure to cloud platforms (BigQuery, AWS, GCP).
• Scripting/automation experience (Python, Bash, SQL). Proactive, confident and ready to take ownership.
• Collaborates effectively with developers, product owners, BI teams, QA and DevOps.
• Eager to modernize legacy database structures and expand into broader data engineering responsibilities, including understanding modern dataflow tooling and pipelines.
• Proficient in English, both spoken and written.

Responsibilities

• Own MySQL, MongoDB and related systems across development and production environments.
• Ensure database uptime, reliability, performance tuning, monitoring, scaling, backups and security.
• Manage schema changes, large-table operations, and data migrations with confidence and precision.
• Lead database upgrades and work with teams to refactor legacy structures into modern, scalable designs.
• Automate operational tasks to increase efficiency and reliability.
• Support real-time pipelines and data flows across teams.
• Support audits, change management and regulatory compliance.
• Manage access controls and release processes.
• Partner with developers, product owners, BI teams and QA to ensure high-quality, reliable data.
• Collaborate with the team and grow into broader engineering responsibilities over time.

Skills

MySQL administration

MongoDB administration

Schema changes

Large-table operations

Performance tuning

Data migrations

Cloud platforms

Automation scripting

Python

Bash

SQL

Collaboration

Job description

ComeOn Group in Short
ComeOn Group in short Founded in 2008, ComeOn Group is a leading global player in the rapidly growing iGaming market. Having launched its first online brand in 2010, ComeOn Group is running a wide range of exciting brands across multiple markets. Operating more than 20 brands on its proprietary platform providing a secure, innovative and entertainment-led player experience across casino and sports betting. ComeOn Group is an international employer within the iGaming industry and has over 500 talented employees across 7 main locations.

Location: Stockholm, Sweden(Hybrid) or Katowice, Poland

ComeOn Group is a data-driven company, and our Data Platform Engineering & Operations team is critical to enabling business success. We are seeking a technically strong Data Platform Administrator with deep operational expertise, someone confident in managing MySQL and MongoDB across all environments. You will be responsible for platform uptime, schema changes, performance optimization and managing large-scale data operations and migrations. This role combines hands-on operational work with growth into broader data engineering responsibilities, giving you the opportunity to influence platform reliability, support analytics and drive key projects across the organization.

Responsibilities

• Own MySQL, MongoDB and related systems across development and production environments.

• Ensure database uptime, reliability, performance tuning, monitoring, scaling, backups and security.

• Manage schema changes, large-table operations, and data migrations with confidence and precision.

• Lead database upgrades and work with teams to refactor legacy structures into modern, scalable designs.

• Automate operational tasks to increase efficiency and reliability.

• Support real-time pipelines and data flows across teams.

• Support audits, change management and regulatory compliance.

• Manage access controls and release processes.

• Partner with developers, product owners, BI teams and QA to ensure high-quality, reliable data.

• Collaborate with the team and grow into broader engineering responsibilities over time.

About you

• 5+ years of experience in MySQL and MongoDB administration.
• Experience with schema changes, large-table operations, performance tuning and migrations.
• Strong operational mindset: high-availability setups, backups and platform reliability.
• Comfortable in a fast-paced, hands-on environment.
• Exposure to cloud platforms (BigQuery, AWS, GCP).
• Scripting/automation experience (Python, Bash, SQL). Proactive, confident and ready to take ownership.
• Collaborates effectively with developers, product owners, BI teams, QA and DevOps.
• Eager to modernize legacy database structures and expand into broader data engineering responsibilities, including understanding modern dataflow tooling and pipelines.
• Proficient in English, both spoken and written.

Benefits

So what can you expect from ComeOn as a place of work? Benefits:

• A competitive remuneration package inc. a company bonus scheme!
• Fantastic quarterly team events and weekly company events
• A one-time bonus to help you set up a comfortable workstation at home (we’re truly Hybrid!)
• On top of our Hybrid work arrangement, up to 40 days a year to work fully remote from anywhere
• Brand new laptop and smartphone with fully paid plan
• Company events, including breakfast mornings and Friday beers

At ComeOn, we have adapted a Hybrid Work model which means that we offer our employees an option to pick their workstation for the day. Want to work from the office a few days a week and some days from home? That’s totally fine with us! ComeOn is known for their inviting and vibrant offices that offer creative areas for collaboration and desk set-ups designed for a Hybrid Work model. When you visit one of our offices you will always be welcomed by a friendly face that will take good care of you. It’s our curiosity that drives our innovative business forward and we work hard in a run together spirit and we always make sure to top it up by having fun! You will not regret picking ComeOn as your next place of work.

At ComeOn Group we value diversity and we take concrete action to ensure fairness in our recruitment process. We are committed to assess candidates on their merit without discriminating against any applicant for whatever reason that is protected by law. We truly value you, as you are. Want to know more about us just visit our website www.comeon-group.com or any of our social media channels to take a deep dive into our culture! LinkedIn Instagram Facebook