Open Circle Solutions sees Business Intelligence as more than just data warehouse solutions. Nowadays it’s more about real-time based analytics, complex event processing and online analytical processing. We do this with the use of Jaspersoft. Read more
Open Circle Solutions has a mobile strategy and, combined with thorough knowledge of integration with relevant back-end systems, we are capable of building valuable mobile apps. We use Xamarin as development platform and build mobile apps for Android, iOS and Windows. Read more
Open Circle Solutions sees Business Intelligence as more than just data warehouse solutions. Nowadays it’s more about real-time based analytics, complex event processing and online analytical processing. We do this with the use of Jaspersoft Business Intelligence Suite. Read more
Open Circle Solutions defines integration not just as the integration of applications and devices, but also as data virtualisation and business process management. Our on Java based solutions in integration lead to a coherent IT landscape where data virtualisation is essential. Read more
Tuesday May 23rd, 2017
SCJP upgrade exam: Java 8Dennis van Loon Java already exists for twenty years now. Since March 2014 there’s Java 8 and Java 9 is scheduled for next year. For Java developers, there are several certificates which are all linked to a specific version. I myself have been working with Java for 15 yea...
Friday May 12th, 2017
An introduction to Apache NiFiMarcel-Jan Krijgsman For some of my Open Circle colleagues, Apache NiFi isn’t new anymore but because the concept is still new and in development I wanted to start from the basics. Besides this, NiFi is being mentioned by our clients more and more. In this blog, I w...
Friday April 14th, 2017
Dataworks Summit München 2017Marcel-Jan Krijgsman Last week, we went to Munich for the Dataworks Summit. For our Data Engineer Marcel-Jan, this was his first open source / big data summit. On his own blog he’ll tell you all about his experience of the summit and the sessions. Day 1 Day 2 Most o...
Frits van de Water
After finishing his education in higher computing in 2003, Frits worked for various employers on many projects in various markets like government, hospitals, schools, care institutions and more. Frits has worked on these projects in different roles, varying from software engineer, IT-Consultant to quality manager and team manager. He has a clear passion for technology and leadership. As a managing consultant, Frits is at his best in an informal environment. He likes working with a team on innovative products / projects that impact society.
Clients and colleagues see Frits as a pragmatic and proces minded working person. His style of leadership can be described as coaching leadership with a focus on the employees (people management). He aspires inspiring leadership.
At Open Circle Solutions, Frits leads the Mobile Unit. This unit is specialized in building (cross-platform) tailor-made solutions with the use of technologies like Xamarin.
Coen van der Maade
In the year 2000, Coen got his degree in Information Science for Business Administration and started working as a Java/Front-end developer. Later on, Coen grew into the rol of Projectmanager/Scrummaster (Certified in Prince2 Practitioner, IPMA-C and PSM I). In this role, he managed projects at Philips, Interpolis and Achmea.
Coen’s approach of projects is characterized by transparency and commitment. With his open personality he will invest in teambuilding, which leads to results. Coen is the Unit Manager of the Java-team at Open Circle Solutions where he develops and implements future proof solutions with his team for clients to help them achieve their goals.
Simon van Kemenade
Sales Development Representative
As Sales Development Representative Simon is responsible for finding the added value of Open Circle Solutions for companies. He is also the initial contact for people with an interest in Open Circle Solutions. After in dept conversations he will initiate the first steps for the possible collaboration.
Simon is a very enthousiastic sales professional who has represented Google products in Dublin for over a year. His way of work includes a decent preperation, good listening and relevant proposals and ideas. His critical attitude, pro-active style and many ideas are awarded with the title employee of the quarter twice in Dublin in 2016.
Michel is working in automation since 1986. He started as a programmer and later on shifted towards more functional roles and eventually project ti. Besides this, he led a business intelligence unit as a service line manager.
Michel is a certified Prince2 Practitioner and Scrum Master. That alone is not enough to be a successful project manager. Experience, passion, communication skills and team spirit complete his profile. He has experience with projects in healthcare, real estate, waste and the high-tech sector at clients like St Maartenskliniek, Amphia hospital, Vesteda, Van Gansewinkel Group, NXP and ASML.
Principals and colleagues describe him as a pleasant and open person who understands a team and can keep them motivated. Stimulating them to act well together to achieve the result is his key focus.
Ruud is an enthusiastic and studious developer who also likes spending his spare time with software development and sharing his knowledge in the open source community. With a background in industrial product development, he uses efficient and creative solutions to create solid products with a focus on the users and usability.
Since 2014, Ruud is active in IT in a professional way. He worked on front-end and back-end projects and had a managing role multiple times. Ruud is a real team player but also has the discipline to work individually.
Marcel-Jan chose the open source world after 20 years of experience with data and Oracle products. He can build on his experience with performance tuning and security in the finance industry, but also retail and regular IT management. Now, he focuses on Hadoop as his specialty.
Marcel-Jan is a real troubleshooter, but has also performed as product manager and teacher. In his Oracle period he obtained hacking skills and learned about the risks in IT systems. To explain those risks to others, he developed and presented a 1 day workshop called “hack your own database”. He found out that many colleagues had problems selling the security subject to their management. Therefore, he presented “How to sell security” at two international congresses.
My name is Roonak Babakhani. I am an industrial design engineer, specialized in Human Factors Engineering (HFE). As a professional I have been using my knowledge of human factors and ergonomics within the IT field as a UX researcher and designer.
I love solving puzzles and problems. Preferably, in collaboration with other professionals to find the best possible solutions. I strive to see the world through users’ point of view by studying and analysing their routines, needs and motivations. Using qualitative research methods and analysing quantitative data, I find out what users’ journeys are and how to optimize products and services to accommodate their needs.
My researches focus on understanding users and find the right intersection between technology, daily life and business objectives. In other words, implementing design thinking in each project. This requires a holistic approach to the challenge at hand and the context it’s within. This approach results in insights which usually contributes to more than one solution to address stakeholders’ objectives with different compositions of possibilities.
You can count on me as a UX- and/or usability researcher and a sparring partner for your projects.
Rens has been working as a Data Scientist for the last few years, with a focus on problem analysis and data visualisation. This enables him to create relevant solutions which are clear for the end user. To be able to offer custom solutions he uses different tooling, including Hadoop on the Hortonworks platform, mainstream databases and open source scripting languages such as Python and R. Rens prefers to use a ‘rapid prototyping approach’ in a team, to be able to reach the best result through interaction with the team members. Earlier in his career, Rens was primarily active in the care sector.
Sander has close to ten years of experience in ICT and has been active mainly in Data Science. During and after completion of his masters in Theoretical Computer Science and Technical Artificial Intelligence, he has been working mostly in the finance industry. Sander is used to actively involve organisations in the process to the final product. Also, he has a lot of experience in assisting medium sized to large companies in getting more insight from their data. Sander has a strong analytical background and he has held the position of Lead/Owner for a long time, which enables him to translate technical concepts into a clear execution.
Sander likes to take on an active and supporting role in a team. He is eager, flexible, willing to learn and tries to involve everyone in the process.
Jeroen is a motivated Java Developer with 5 years of experience in the development of custom Java applications. He graduated in 2010 from his Master studies in Software Technology from the University of Utrecht. After graduation he worked for 4 years at the University of Tubingen, doing research in the area of compiler technology and query languages. He contributed to a modern compiler and gave lectures in the area of programming. He has been working in Java consultancy from 2013 onwards.
During the last few years he has worked mainly in DevOps environments and he enjoys doing so. Jeroen is used to working in environments where the team is responsible for development as well as application maintenance. He has worked in different roles, from Analyst to Lead Developer and Scrum Master.
Willem van Dreumel
Willem has been working in the software development industry for the last 8 years. After finishing his studies in Information Technology he started as a Java Developer and has grown into an experienced Back-end Developer. In this role, he has been involved in projects in the financial and energy sector and in government. He has fulfilled roles from analysis and implementation of business requirements to leading a team of developers as a Technical Lead.
During the last couple of years Willem has specialised in the area of integration. This work often deals with complex business matters, he likes to be the linking pin between business and technology. An important question that keeps Willem busy: what is the business goal and does the proposed solution accomplish this in the best possible way?
Senior Test Engineer & Analist
Jan has been working in the IT industry for the last 23 years. In the first 10 years as an Oracle developer he formed the basis for his technical know-how and his knowledge of generic software development. He is driven by his strong skills in analysis and his goal to be able to offer good and solid solutions for his customers. Doing so, Jan has developed into a Senior Test Engineer and Analyst. His affinity with technology is useful when working in (setting up) automated testing, in thinking of ways of technical implementations and in testing complex technical solutions.
Due to these traits, he has proven to be successful in bridging the gap between business and IT teams in the professional services industry and in the energy sector. When Jan became aware of Scrum/Agile in 2010, it was clear to him that this would be the best way to combine his knowledge and expertise. He thrives in an environment where he can be a participant, or where is able to guide a self-supporting team as a certified Scrum master in order to improve himself or the team.
Senior Java Developer
Endy has worked as a Developer, Functional and Technical Designer, Team Lead, Architect and Product Owner. He has been active in various sectors, but particularly in the energy sector and the health care market. He loves a results-oriented approach and monitors the quality of the final product. His specialities focuses around Open Source technology, but he enjoys working in heterogeneous environments as well.
Alex has been working in IT since 1992, mostly as an (Oracle) Developer and Oracle DBA, with both small as well as large companies. He likes to concentrate on complex technical issues. His strong drive to find out why something is not (sufficiently) working has often led to him being asked to investigate problems in performance.
Recently he has been specialising in Hadoop and similar applications. In this capacity, aimed at the digital marketing of a large electronics company, Alex is working now on the set-up of a Hadoop production cluster and the configuration of matching ETL processes.
Alex is at his best in a small and committed project team with a strong focus on the final result. In this environment his very pro-active nature and commitment come in very useful, which have a positive impact on the quality and progress of the project.
Senior Java Developer
Bas is a motivated Java Developer with by now more than ten years of experience in developing custom Java applications. He graduated with honors from the Eindhoven University of Technology in 2004 and has been working in IT ever since, first as an in-house developer and from 2007 onwards as a consultant.
Bas has worked as a developer, analyst and team lead on a number of challenging projects in several sectors like utilities, government, healthcare and education. In doing so, he has worked with a large number of standards and frameworks, including J2EE, Spring, JSF, Wicket, CXF and Vaadin. Bas is a firm believer in the user of existing frameworks that offer a high level of abstraction, like Apache Camel and JBoss OptaPlanner, for increasing code quality and productivity. In addition, Bas is a certified SCRUM master who highly values working according to Agile principles.
As one of the first people to graduate from studies in Information Technology, Rob Cüsters started work as an Information Analyst at Volvo in 1984. Then BSO, Rank Xerox, Atos Origin, PwC and Ciber followed and now Open Circle Solutions. Thanks to the number of employers and customers and thus taking on different roles and projects he is a truly experienced project manager. His specialties are migrations, conversions and relocations, but in essence any IT project that has multiple interests suits him. Rob excels at team building and decision making, but not in the least at stakeholder management.
Rob says that not the project management methodology or the formal procedures make project managers successful, but it is communication and experience that make the difference. And motivation and enthusiasm are very important, says Rob. Time and time again he gets feedback that these traits characterise him. It’s no wonder Rob enjoys his profession of being a project manager.
Roy Uijting has 3 years of experience as a Mobile Developer and has already been working with the .NET MVC framework for 5 years now. After his studies in Information Technology he started working as a Web Developer, where he produced custom solutions in applications for the web for both small and large enterprises.
Because of growing customer demand in apps, Roy familiarized himself with the Xamarin platform. Firstly, he specialised in Xamarin iOS and Xamarin Android, later he studied Xamarin Forms. Roy is primarily involved in the development and delivery of apps. He can use his creativity to the full in this. By now, Roy has developed several apps for instance XXImo and Booking.com.
Roy has a wide range of employable skills, because of his experience as a Web Developer and as an App Developer. He is a motivated, enthusiastic, involved and independent developer who is eager to learn, and who also has experience in working in project teams. His goal is to learn every day.
Jan, who has 3 years of experience in back- and frontend development, will strengthen the team of Open Circle Solutions as Mobile Consultant. After completing his studies in Computer Science he started work as an All-round Developer at a company that primarily builds software for the agricultural industry. During these years Jan has gained a lot of experience in back-end development of business critical (web) applications, which enable trade in energy, gas and heat for horticulturalists. Next to his work as Back-end Developer Jan has been active in the development of web- and mobile applications. In doing so, he has learnt he has a passion for building mobile applications.
Jan likes to work on issues relating to an optimal User Experience combined with the desired output of functional and technical requirements.
Dennis van Loon
Senior Java Consultant
Dennis has more than 15 years of experience and is our latest Java Consultant at senior level. During these 15 years he has done several projects, mostly Java, and he has shown many customers he is a valuable member for project teams. Dennis is an all-round consultant, he has taken on multiple roles from functional designer to lead developer and scrum master.
The last few years he has mainly worked in DevOps environments which he really enjoys. Dennis is used to working in environments where the team is responsible for both development and application management. He performs at his best in a wide role where programming has to be present, obviously. Dennis has strong analytical abilities and always thinks of solutions in the customer’s best interest.
Nataschja is as our recruiter responsible for identifying and attracting new employees for Open Circle Solutions. She takes care of the process of recruitment and selection. She works closely with managers and the board. The last few years she has gained experience at a recruitment agency in the hotel and catering industry in hiring and supporting staff. She values personal contact a lot. She gets energy from working with people and adding to the growth of our organisation.
Since finishing his studies in industrial engineering and management science in 2001, he has been working in several (Business Intelligence) projects at amongst others Philips, VGZ, KPN, Rabobank, Achmea and Interpolis. During the last few years he has been working in the role of project manager/scrum master, including a period of 1,5 years as an account manager.
Since September of 2015 Ward has been working at Open Circle Solutions as Managing Consultant. In this role he is responsible for the set-up of a Big Data/ BI unit.
Senior Java Consultant
Bas Piepers, Java Consultant, has been working in IT since 2002. After his bachelor in Computer Science, Bas fulfilled several roles within IT projects, e.g. Developer, Functional Designer and Consultant. In recent years, he focused on development for Open Source Java custom applications. Bas loves the technical aspect of development of new software, but thinks it is very important to involve the client in the process. “The development of software is a co-operation between client and developers, so the processes involved must be flexible.” Bas believes in an approach based on SCRUM leading to an application which enables the client to do the job better and faster.
Roel van Rijn
Roel has been active in IT for over 15 years, including 8 years in Senior or Managing roles. He is your ideal Project manager. After his computer science study he worked as project manager at Atos, CGI, Ciber and Van Gansewinkel. In 2011 he came back to Ciber, where he continued as Managing Consultant.
As an experienced project manager he is able to manage ICT-technical software/hardware projects for small and big companies in sectors like Energy, Healthcare, Government, High tech, Industry and Environment.
Roel is good at keeping an overview in complex environments, he knows how to motivate people and make them work together, give direction to organizations by acting proactively and knows how to keep his calm in stressful situations. Next to that he is a structured person who applies accurate and up-to-date project administration. Because he is good in setting priorities with regard to the usability of the end result, he knows how to keep progress going, up to an optimal end result. He is aware of different and opposing project interests from stakeholders and acts accordingly.
Michiel van den Nieuwenhuijzen
Consultant Java Back-end
With six years of experience as Java developer, Michiel is one of our Java Back-end Consultants. He has shown multiple times that he can contribute in diverse environments for different clients. Amongst other things, he setup a migration process from powerbuilder/sybase to Java and build multiple complex applications as Lead Developer. A small selection of the tasks he performed were: leading teams, define the software architecture, consulting with the architects and setting up the technical architecture.
At his last assignment Michiel was responsible for setting up fully automated service processes and migration to a new platform. Preferably he works in scrum/agile teams.
Michiel has learned to use his love for programming and solving problems and convert this into motivation and a pro-active attitude. His analytical capabilities and creativity help him solve problems and deliver high quality end results.
Junior Consultant Mobile
Jasper, Junior Consultant Mobile, graduated for Design for Interaction at the Technical University of Delft in 2012. He is fully informed and familiar with the newest techniques, and with it he realizes user-centered solutions.
As a Trainee Software Development at Educom & Detacom he focuses his skills for software development and user experience in the field of desktop, web and mobile apps. With his combined experience as developer and UX designer he is our Junior Consultant Mobile.
With his four years of experience as Mobile App Developer and Consultant, Wouter is one of our Mobile Consultants. Amongst others, he has been working for Atos, Rijkswaterstaat, Ciber and the Ministry of Security and Justice. His specialty is developing apps for iOS and Android. Next to that, he continuously follows the newest technologies like Xamarin. In May 2015 he became a Xamarin Certified Developer.
Jordan van Est
Jordan van Est, our Managing Director, is a very experienced project manager and has been working in IT in the energy sector, high tech and telecom industry since 1994. His background is managing Java and Open Source projects for the purpose of integrating systems or for the build of a custom solution. He has also managed Java and Open Source departments. “My approach as project manager is goal oriented and pragmatic, where I guide and inform my team and stakeholders as a team player with a human approach. I support a Scrum approach in a collaboration of business and IT, where we deliver software in short bursts that offer immediate added value to all stakeholders.”
Patrick Deenen, our R&D Director, has 24 years of work experience in ICT and is a very experienced (custom) software specialist in the area of business critical (internet) applications with a focus on JEE technology. “At the start of my career I have gained much experience in 4GL development, where high productivity was key. I find that in current development of web technology this is neglected. I think it’s important to focus on productivity.”
What employees say
At OCS, freedom and responsibility go hand in hand with challenging projects and lots of room for self-development. With knowledge sessions, quarter meetings, trainings, intervisions and fun days out, working at OCS is a lot more then just working the hours.
Next to experience, motivation and communication, for me as a Project Manager creativity is essential to be successful. At Open Circle Solutions, innovation and creativity are cultivated, more so than at other companies.
At Open Circle Solutions I have the chance to develop myself professionally. This enables me to use the latest techniques for our clients. Open Circle Solutions is a company with motivated colleagues who co-operate informally. We get the best out of each other and in this way we guarantee that our clients get the right solution.
Creating innovative solutions with the best people, implementing them with passion and energy, resulting in satisfied and excelling clients; that is what motivates me as a Project Manager.
Roel van Rijn
At Open Circle Solutions we contribute to the development and growth of the company. Activities have a direct contribution to the company and you are stimulated and motivated to generate and develop your own ideas. Apart from interesting assignments at leading companies, we have professional colleagues and an informal and pleasant work atmosphere.