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+31(0) 35 369 0307
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Our Team
Get to know our team
Martijn Wallet - Manager Consultancy & Training

Martijn is both senior database consultant and entrepeneur. He did run his own business, DBA on Call, in a hardworking, professional, and disciplined manner, and works for parties like G4S, Budget Energie, SNS Bank, ABN AMRO, Detron, KLM, and Sandd. He has experience with every kind of database, from MySQL to MS Server and from Sybase to PostgreSQL and PostgresPURE. Martijn is a trusted advisor to companies that have to decide on a platform or want to migrate to a new database environment. Besides this, he likes to take care of trainings, he is married and has 4 children. https://nl.linkedin.com/in/mwalletdbaoncallpageload
Thomas Spoelstra - OptimaData DBA and Senior Database Reliability Engineer

Thomas is a strong senior database specialist. An all-round DBA with a lot of experience in various large and complex customer environments. He is the founder of the database systems of Bibit, Worldpay and Stater. His strength lies in Sybase and SQL Server. Thomas also knows how to help clients with open source platforms such as MySQL / MariaDB and PostgreSQL. Thomas lives in Amersfoort, is married and has 3 children of which 1 is deceased. As a true South African he loves a good "braai" with a special beer! https://www.linkedin.com/in/thomasspoelstra/
Tino Dudink - OptimaData DBA and Database Reliability Engineer

Tino is a strong and engaging Senior DBA Consultant. Certified and specialized in MicroSoft SQL Server. With his soothing appearance and communicative skills he knows how to get to the core of any database challenge and create a stable and structured database environment, either independently or together with the client. He knows how to create a future proof design in every detail and also how to manage the most complex HA environments. Tino is married and father of a beautiful family with whom he spends a lot of his spare time together. https://www.linkedin.com/in/tdudink/
Gijsjan Baars - OptimaData DBA and Database Reliability Engineer

Gijsjan is a DBA Consultant and Database Reliability Engineer who likes to work hard. He has thorough knowledge of several (open-source) database environments, among which PostgreSQL, MySQL, and MS SQL Server. His expertise is in designing, migrating, optimising, and managing operationally stable database environments. Besides this, Gijsjan is a skilled trainer who knows how to share his knowledge in a pleasant and clear manner. He lives in Gouda and loves to play soccer. https://nl.linkedin.com/in/gijsjanbaars
Dimitri Choustov - OptimaData DBA and Database Reliability Engineer

Dimitri is a strong, passionate DBA. On the Microsoft SQL Server platform he is very experienced and certified. He also knows his way around Oracle and MySQL as a senior DBA. In addition to regular and daily administration, Dimitri has a lot of knowledge of automation and optimisation. Of both repetitive DBA tasks, as well as processes and maintenance. He is a rock star in scripting. Dimitri has achieved good performance results at leading companies in large and complex environments. In addition to his work in and around database platforms, Dimitri loves to travel such as regular city trips and gadgets. https://www.linkedin.com/in/dimitrichoustov/
Craig Healey - OptimaData DBA

Craig is an experienced DBA Consultant. He is senior Oracle DBA and has for example experience with large testenviroments and complex hybrid database designs. He also is comfortable in a DevOps role. MS SQL Server is the other platform he is familiair with. He provide knowledge to clients in order to leverage new technology and practices. At the moment he is on a handson traning project for PostgreSQL and MongoDB to become a Multi-platform DBA Consultant. In his spare time he teaches Historical European Martial Arts and he has his privat pilot's license. https://www.linkedin.com/in/craighealey1/
Eric Gipon - DBA Consultant and Database Reliability Engineer

Eric is an experienced MS SQL Server DBA with also strong knowledge of MySQL / MariaDB in combination with cloud solutions. Aurora MySQL, AWS RDS but also hybrid solutions. Eric has worked in leading organizations on complex database environments and has developed a good basis to advise, support and relieve OptimaData customers. Eric is particularly strong in modern and innovative database setups with a high available character and scalable starting point. As a DBA he knows how to seamlessly hit the right tone in a CI/CD and/or DevOps environment. Eric lives together with his partner, has 3 beautiful children and in his spare time he likes to play music. Like playing guitar but also producing music. Eric Gipon - Linkedin Profiel
Cindy Beernink - DBA Consultant and Database Reliability Engineer

Cindy is an experienced DBA with a strong background from technical application management. With her broad knowledge and experience as an Application Engineer and DBA in both government and business, she developed a strong foundation to further specialize as a DBA a few years ago. Cindy has good knowledge of and experience with Oracle and SQL Server. At OptimaData, Cindy will also develop further on open source databases such as PostgreSQL. Because of her broad experience at different organizations, she is able to switch between stakeholders, business and technology and she can quickly adapt to new environments. In her spare time Cindy is renovating her Grundel and likes to go sailing when the weather allows. Linkedin-profile Cindy Beernink
Wesley Birsak - DBA Consultant and Database Reliability Engineer

Wesley is a results and practice-oriented DBA with a relaxed demeanor. He is specialized on Microsoft products like SQL Server (High Available, AlwaysOn and clustered) but also the Business Intelligence tooling like SSRS, SSAS, SSIS, ETL links etc. Besides on premise environments Wesley also masters cloud databases in Azure and the cloud services of Azure. As an open source DBMS Wesley is developing on PostgreSQL. Wesley enjoys spending his free time with his family and hiking with his dogs. Linkedin-profile Wesley Birsak
Jaap Drupsteen

Jaap is a strong senior consultant who thrives in large, complex and difficult to fathom environments. He brings structure, order and peace to the systems and also the working environment. Jaap has strong analytical skills, who knows how to build bridges between the requirements and the solution, between the users and the IT specialists, between the business and IT. Jaap is married, has 2 children and (especially) outside of work he likes to sing in a choir, squash the plaster of the wall and if the weather permits a little surfing. Linkedin-profile Jaap Drupsteen
Peter Koster - OptimaData DBA and Multi-platform DBA

Peter Koster is a senior multi-platform DBA. He is Oracle OCP certified and also proficient with SQL Server. He is also interested in the open source platform MySQL. Peter brings with his wealth of experience peace on the floor and in complex DBMS environments. Furthermore Peter is a pleasant colleague such as for technical sparring or setting up another tree. Peter is married and lives in Almere. Besides tinkering in and with databases Peter is very interested in the Dutch language. https://www.linkedin.com/in/peterkoster2/
Michael de Groot - Associate Principle Consultant

Michael is a very experienced open source database expert with a deep specialization in MariaDB and MySQL. He has extensive knowledge of High Availability setups and scalable architectures. Michael also provides the OptimaData training on MySQL and MariaDB. He can be flown in for ad hoc disruptions and 1-day tuning but also for regular HealthChecks or training on the Job to support your DBA's with open source challenges. https://www.linkedin.com/in/michaeldegroot/
Koos Wijdenes - Privacy & Security Officer

Koos is the point of contact for information security and privacy. He maintains the Information Security Management System (ISMS) to be able to demonstrate to our customers that OptimaData handles customer data in a secure manner and complies with ISO27001:2017. Koos does this not only for OptimaData but for multiple companies. He finds his challenge in getting a solution working that is simultaneously compliant with information security and privacy. He is married and father of 2 children. He walks a lot with his dogs, enjoys playing darts and is a passionate supporter of the most beautiful and pure soccer club in the Netherlands. Linkedin-profile Koos Wijdenes
Pieter Groenendijk - Staffing Consultant

Pieter Groenendijk is an experienced recruitment specialist. A connector. Of people and technology. Over the years Pieter has built up a strong network but also gained broad technical experience. In addition to various roles in employment mediation including at USG People Pieter has also been an entrepreneur, knows the challenges of self-employed people personally and can empathise perfectly. No assignment is too challenging for him to find the right professional and vice versa! Pieter is married, has 2 beautiful children and, as he says, a beautiful bonus daughter. Besides his activities as a recruitment specialist at OptimaData you can find Pieter on the football field where he can train young talents under 11. https://www.linkedin.com/in/groenendijkpieter/
Edco Wallet - Manager Staffing & Recruitment

Edco loves working with people. He is communicative, approachable by a "getting things done" mentaility. He has years of experience as intermediair in the IT business and has worked for USG and Nováccent. At OptimaData, his main role is recruiting people for internal posts, the OptimaData DBA team. Besides this, he likes to use his recruitment skills and expertise for our clients. His ambition is to create the perfect match. Edco lives in Bunschoten with his wife and children and is an enthusiastic drummer. https://nl.linkedin.com/in/edcowallet
Gerard Zuidweg - Commercial Manager

Gerard is a ‘connector’ – he likes to connect people, products, and services, to create a win-win scenario. He is an experienced, hands-on, result-oriented manager and entrepeneur with a background in financial services, Fintec, and IT services. Besides commercial issues, he takes care of all business-related affairs. Gerard is married and has 3 daughters. He sings in a cover band B-loose, which performs (internationally) around 20 times per year. https://nl.linkedin.com/in/gerard-zuidweg

We try to achieve this by employing our knowledge and expertise at the right moment and connecting the right people to our clients. OptimaData’s ambition? To be the go-to knowledge and expertise center for (open-source) database technology. A knowledge and expertise center that provides all services, people, and products regarding (open-source) database technology. People, knowledge, and tooling: together they offer a solution to every client.
More about us
The people behind OptimaData are its strength – it’s as simple as that. Within OptimaData, they combine their passions for databases, people, and consultancy. Their shared goal is to help organisations in making their database applications better, faster, more approachable, and safer, so the client can focus on the core business.
We are experts when it comes to databases, training, and recruitment. Our ambition is to provide the right expertise at the right time, to ensure optimal performance of your database.