RES Software

RES Software – Why Work For Us?

Since being founded in 1999, RES Software has become the leader in making IT organizations 10x more productive at delivering IT services and managing user workspaces. Our company develops technology aimed at:

  • Creating value and making a difference for IT organizations
  • Unlocking the full potential of IT people
  • Driving better IT operational excellence

As a pioneer in the workspace virtualization category, RES Software enables you to centrally deliver, manage and secure the key elements of your user’s computing experience, independently of workstyles and devices.With over 200 employees worldwide, RES Software serves more than 2,500 customers with more than 3,500 deployments in 27 different countries. RES Software prides itself on continued innovation. Our company currently holds 11 patents for unique technology that helps IT departments increase their productivity each day.


​​​​​​​Mission and Values:​​​​

Our Ambition

  • People: Be a great place to work where people are inspired to be the best they can be.
  • Portfolio: Deliver pragmatic solutions, fanatical support and expert services that result in dramatic (10x) improvements in IT productivity.
  • Partners: Drive a winning community of customers and trusted advisors to deliver mutual, sustainable value.
  • Performance: Win as one focused, committed and agile team.

Our Mission

To be the leader at making IT organizations 10x more productive at delivering IT services.

Our technologies:

  • Create value and make a difference for IT organizations
  • Unlock the full potential of IT people
  • Drive better IT operational excellence

Our Values

The RES Software values represent the DNA of our company. It defines how people treat each other and provides a framework for decisions. It provides a guideline on how to evolve Our company further. We will live by the RES Software values in our day-to-day activities, guard and advocate them to everyone. It also enables us to tell the rest of the world what we stand for.

At RES Software we stand behind the following values:

  • Trust, respect and integrity Focus and discipline
  • Quality and speed
  • Creativity and innovation
  • Accountability and transparency
  • Enjoy the ride and have fun

Working at RES is like playing in the champion’s league of software development. You have to give 120% every day, but it’s such a kick! It’s amazing to see what a group of talented, devoted and focused people can do.

Peter Jansen, Software Architect

Bob Janssen

RES Software has the culture, vision and structure to provide any dedicated employee with various opportunities to grow on a professional level. No matter what the job title might say, each employee has the opportunity to impact the success of the company and gain valuable experience that can steer their career path in the direction they choose to.

Anca Popovici, Senior Marketing Manager - Americas


Working at RES gives me energy. It’s a pleasure working with such great products and amazing people!

Sabine Iltink, Senior Technical Writer


  • Comprehensive medical, dental and vision coverage
  • 401(k) savings plan
  • Flexible vacation and sick time policies
  • Company-paid life insurance
  • Company-wide commitment to a positive work/life balance
  • Opportunities for international work assignments
  • Professional mentoring and career development resources


Klaus Besier
Executive Advisor

Mr. Besier serves in an advisor capacity at RES Software, working with the RES leadership team and the Board of Directors on the company’s key strategic initiatives. Mr. Besier previously served as the CEO of RES Software from 2010 through the beginning half of 2014 and has served on its board since 2009. He brings deep executive experience in the technology industry and a proven track record of driving top line growth to his advisory role.

Mr. Besier was President and CEO of global software leader SAP America, Inc., and is credited with driving its growth in North and South America, Australia and New Zealand from $50 million to $1 billion in revenues in less than five years. He also served as President and CEO of Firepond, Inc., which he took public in one of the most successful IPOs of 2000. Additionally, as President and CEO of Neoware, Inc., Mr. Besier drove significant changes in the company's go-to-market and partner strategies. This improved corporate structure led to significant growth and visibility for the organization – key factors that resulted in its acquisition by HP in 2007 with a total transaction value of more than $300 million.

More recently, Mr. Besier served as CEO of Pramata, Inc., where he helped refine and implement a go-to-market strategy that has helped drive continued growth among Fortune 500 customers. He has also served on the board of many public and private companies, including Procurian, Inc. (formerly ICG Commerce), the procurement outsourcing specialist.

Mr. Besier holds a Bachelor of Science degree in Business Management and Finance from the University of Economics in Berlin.



Bob Janssen
Founder and Chief Technology Officer

Bob Janssen is the co-founder and Chief Technology Officer of RES Software. He has been responsible for product vision, strategy and development at RES Software since co-founding the company in 1999 and acts as the most prominent RES Software spokesperson at industry events. He was instrumental in the creation of the RES Software flagship products, RES Workspace Manager and RES Automation Manager, released in 1999 and 2005, respectively. During his tenure, RES Software has sold well over one million licenses worldwide and his development team has issued more than 10 major releases. Mr. Janssen also holds several patents for the solutions he has developed at RES Software such as the 2010 patent for reverse seamless technology featured in RES Virtual Desktop Extender and other patents dating back to 2003.

Prior to founding RES Software, Mr. Janssen worked in several IT departments where he faced the day to day struggles of managing corporate desktops and delivering IT to users. This firsthand understanding inspired him to create products that solve the problems experienced by IT professionals on a regular basis and to coin the term “Workspace Management.” Bob worked as a System Administrator and later as a Software Developer building pragmatic software solutions using the eXtreme Programming (XP) methodology for Air Liquide, and as an Information Architect for Schenker, where he modeled, designed and supervised the construction of system and enterprise-level application solutions.


Marc Zinnemers
Chief Operating Officer

As Chief Operating Officer at RES Software, Marc Zinnemers is responsible for leading the Corporate Finance, IT and Operations teams, as well as RES Software’s award-winning Support and Services team. He brings to RES Software more than 15 years of operational finance, controlling and management reporting experience in the information technology and advisory industries.

Prior to RES Software, Mr. Zinnemers was Chief Financial Officer at Blue H Technologies, where he built the company from seed capital phase into a revenue generating company. Previously, Mr. Zinnemers served as Vice President of Corporate Finance and Administration for Gartner IT Research and Advisory Firm, and held the position of EMEA controller for i2 Technologies. Additionally, Mr. Zinnemers worked for both Exact Software and Akzo Nobel Pharma Group.


Tracey Mustacchio
Chief Marketing Officer

As Chief Marketing Officer, Tracey is responsible for market strategy at RES Software, plotting the course for the company’s continuing growth and spearheading global product marketing and communication initiatives. Tracey brings more than 20 years of experience in marketing, business development and product management to RES Software, in addition to a long track record of helping companies strengthen their brand to dominate specific market niches.

Previously, as VP of WW Marketing for IBM's Information Management division, Tracey was instrumental in developing the company’s stance on big data and analytics. Prior to IBM, Tracey served as Vivisimo's (acquired by IBM) CMO and led all of Vivisimo's marketing and product management functions, including go-to-market strategy, public relations and lead generation. Before Vivisimo, Tracey held senior marketing and product management positions at TraceSecurity, Secure Software (acquired by Fortify Software), McAfee and Business Evolution (acquired by Kana). She also founded and operated her own strategic marketing consultancy that specialized in high-growth companies.

Tracey is a graduate of Virginia Wesleyan College, and graduated as one of ten Wesleyan Scholars.


Gene Bonacci
General Manager and Vice President, Americas

Gene Bonacci is responsible for sales, channel partnerships and technology partnership for RES Software in the Americas.

Throughout his career, Mr. Bonacci has been responsible for managing global sales and strategies for large technology companies and brings more than 15 years of experience in technology sales and leadership to his new role.

Most recently, Mr. Bonacci held the position of Global Vice President of Strategic Sales at Wyse Technology where he was responsible for Strategic Partners and the US Federal market. Prior to Wyse, he led sales efforts at Symantec Software as Global Director of Sales and Endpoint Virtualization. In that position, he focused on sales enablement, training and management coinciding with the global introduction of the Symantec Endpoint Virtualization desktop management solutions. Previously, Mr. Bonacci served as Global Vice President of Sales at AppStream Inc., where he drove significant revenue growth and channel strategy, leading to the company’s acquisition by Symantec.


Monika Bouchalová
Vice President, Human Resources

Monika Bouchalová joined RES Software in August 2007 as Vice President, Human Resources. She has 11 years of experience in the international Human Resources field. She previously held a position as Human Resources Manager EMEA at Progress Software Europe (based in the EMEA Headquarters in Rotterdam). She has experience in international HR, recruitment, international assignments, relocation matters, employment law, compensation & benefits, and employee administration (HR) systems.

Ms. Bouchalová relocated to the Netherlands in 2000. Until then she lived in Prague, The Czech Republic, where she worked for PepsiCo., DuPont, and the Airport Training Center Prague.


Morteza Esteki
Vice President of Sales, EMEA

Morteza Esteki is responsible for sales, channel partnerships and strategic alliances for RES Software in Europe, Middle East and Africa (EMEA). At RES Software, he has quickly risen from leadership of the Company’s Benelux region to leadership of the entire sales team in EMEA.

Prior to joining RES Software, Mr. Esteki spent more than six years in ascending roles at Quest Software, including roles in business development, sales directorship and general manager of Quest in the Middle East region. While based in Dubai for two years, he successfully built a sales organization serving the Gulf nations. For five years previously, he was sales director for Quest Benelux. Prior to Quest, Mr. Esteki held a technology consulting role at Capgemini, where he led a pan-European project at Canon Europe. He also worked on projects with PGGM, the Dutch Ministry of Foreign Affairs. He began his career as an IT project manager.

Mr. Esteki has been educated at HTS Amsterdam and VU in Amsterdam, and holds a Master’s Degree in Informatics Engineering.


Bob de Kousemaeker
Vice President, Research and Development

As Vice President of Research and Development, Bob de Kousemaeker is responsible for all aspects of the creation of RES Software products, including leadership of software development teams in Netherlands, Romania and Boston. Bob joined RES Software in 2009 in product roles, advancing to Vice President of Product Management.

Previously Bob de Kousemaeker was a RES Software partner and solution architect at Capgemini, as well as earning deep experience with customer implementations of technologies from RES Software, Microsoft and Citrix. He consulted for IBM, Wang Global / Getronics, Login Consultants, and other premier consultancies in Europe. Bob was also a technology architect for the Dutch Ministry of Defense as well as the Ministry of Infrastructure and Environment, and began his career in a technology implementation role at Microsoft.

Main Software 50 2014: Strong growth in turnover, employment and number of participants 

  • Main Capital Partners presents the Main Software 50, an annual ranking of the most successful independent Dutch product software companies. For the 3rd year in a row RES Software is a finalist.


Main Software 50 ranks RES Software 2nd for Fast Growing Independent Software Companies

  • They admired RES Software in addition to the autonomous growth, for the quality of RES Software’s revenue which is mainly product related and has an extreme strong foundation given the strong install base of existing maintenance customer of around $20million.

RES Software nominated for Dutch GD Gazellen Awards

  • RES Software has been nominated as fastest growing companies in The Netherlands of the Dutch Financial daily (Het FinancieelDagblad). It is known as FD Gazellenand it covers all industries and sizes of companies. The events is sponsored by Graydonand KPMG.


  • The Red Herring editorial team selected the 2011 Top 100 Europe in Amsterdam on May 25. This group of 100 companies are the most innovative companies from a pool of hundreds from across Europe. The Top 100 are evaluated on both quantitative and qualitative criteria, such as financial performance, technology innovation, quality of management, execution of strategy, and integration into their respective industries.

RES Software Reviews

69 Reviews
69 Reviews
Rating Trends

Recommend to a friend
Approve of CEO
(no image)
Marc Zinnemers
5 Ratings

    Excellent Vision and Passionate People

    • Comp & Benefits
    • Work/Life Balance
    • Senior Management
    • Culture & Values
    • Career Opportunities
    Former Employee - Solutions Architect in Portland, OR
    Former Employee - Solutions Architect in Portland, OR

    I worked at RES Software full-time (more than 3 years)


    I've worked for large, medium, and small companies and startups. I've never had such a great experience working for any company, than I working at RES Software. RES employees are so passionate about building a fun and exciting brand, and products that really benefit their customers. Working for the company for 3 years provided great memories and I really value the time I had with them. Their product vision and company direction was in line with the latest trends in the industry. They are in a perfect spot to really take advantage of the market opportunity.


    I'm not able to think of many cons regarding this company. They have such a proven track record of building a great culture and listening to their employees.

    Advice to ManagementAdvice

    It's a great time for RES Software. Keep the momentum and continue to hire great talent!

    Positive Outlook
    Approves of CEO

RES Software Interviews

Updated Aug 18, 2014
Updated Aug 18, 2014

Interview Experience

Interview Experience


Getting an Interview

Getting an Interview


Interview Difficulty


Interview Difficulty




    Director Interview

    Anonymous Interview Candidate
    Anonymous Interview Candidate
    Application Details

    I applied through a recruiter. The process took 5 weeksinterviewed at RES Software.

    Interview Details

    I was contacted by an internal recruiter via email with a copy of the job posting attached. We spoke on the phone almost immediately following my response that I had interest. I was arranged to speak with the VP of my department also fairly quickly and we spent about 45 minutes on the phone the next day. I then met in person with the CEO, and several members of the senior leadership team. There was also a personality-style assessment which was reviewed during one of my interviews.

    In my final interview, I spent the entire day at the Radnor office and met with my VP in person, went out to lunch with the department and also skyped with several top leaders in the Netherlands office.

    Overall I met with 9 people during the process. While thorough, it may have been mildly overkill as I got the impression that the decision was made before my final interview day. Throughout that day several people told me it was a "formality" and "expect an offer tomorrow". Offer was provided in 2 days time.

    Interview Questions
    • If you ask, you should be able to review the results of your personality test. Look this over and be prepared because you may get questions about aspects of your personality which could be viewed as a negative versus how the person in the position should behave.   Answer Question
    Negotiation Details
    The offer was competitive in terms of salary. They were unwilling/unable to negotiate in terms of PTO and stock options, but those were not deal-breakers for me so I accepted same day.
    Accepted Offer
    Positive Experience
    Average Interview

RES Software Awards & Accolades

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Additional Info

Headquarters Philadelphia, PA
Size 150 to 499 Employees
Founded 1999
Type Company - Private
Industry Information Technology
Competitors AppSense

RES Software transforms how users consume IT services through proactive, secure and automated delivery and return of IT services, with a great user experience. Our technology helps IT professionals master the impacts of IT consumerization, increasingly sophisticated corporate users, bring-your-own-device initiatives and cloud technologies by building a foundation for... More

Mission: To be the leader at making IT organizations 10x more productive at delivering IT services.

RES technologies:

~ Creates value and make a difference for IT... More

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