RES Software – Why Work For Us?

We’re the leading digital workspace technology company and for 15 years we have brought agility and enablement to the workforce while improving IT security. We do this through proactive and self-service access to the apps and services workers need when they need them, in a context that enables them to be most productive.

Together, RES products:

  • Empower the workforce through self-service, automated delivery and return of apps and services to each person’s secure digital workspace
  • Enable IT to proactively deliver and revoke access and services whenever employee roles and responsibilities change
  • Provide lightweight automation so services and apps no longer need manual delivery
  • Allow IT to protect the business with powerful and context-aware security and compliance controls

RES boasts numerous patented technologies, faster time to value and superior customer support for more than 3,000 companies around the world. We’re making IT more effective, workers more productive and enterprises more efficient.

Our Culture:​​​​

We are a committed and agile team of people who have fun at work. Trust and respect permeate our relationships with each other. That's what makes us a great place to work – a place where people are inspired to be the best they can be.

Our Values:

  • Freedom to step up and deliver
  • Treat others like you want to be treated
  • Be fanatical and drive change

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 Manager - Global Demand Generation


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

Sabine Iltink, Senior Technical Writer


RES Software provides a great work environment with a lot of growth opportunities for its employees. Along with interesting and rewarding work, I am greatful to be working with a dynamic team where everyone is so supportive and encouraging.

Varinder Kaur, Senior Marketing Manager - Marketing Operations


  • Great culture and fun work environment
  • Global talent development program
  • Strong leadership with a team environment
  • Flexible working hours and competitive time-off policy
  • Comprehensive medical, dental and vision coverage
  • 401(k) savings plan
  • Company-paid life insurance
  • Opportunities for international work assignments
  • Professional mentoring and career development resources

Al Monserrat
Chief Executive Officer

Al Monserrat became Chief Executive Officer of RES in April 2015, joining RES after a fifteen year career at Citrix Systems, Inc. At Citrix he was part of the executive leadership team that grew the company from hundreds of millions to more than $3B in revenue in 2014. During the past seven years as Citrix’ Senior VP Worldwide Sales and Services, Mr. Monserrat led the global sales and services organization, growing revenues by almost 90%. He also served as Citrix’ VP of North American Sales, where in three years he more than doubled revenue and led the transformation of field operations into a multiple product and multiple route-to-market organization with a keen customer focus. Previously Mr. Monserrat was in a leadership role with Innovex Group, which was acquired by Citrix, and Accenture.

He holds an MBA from University of Texas and a BS in Computer Science from University of Miami.

Bob Janssen
Founder and Chief Technology Officer

Bob Janssen is the Founder and Chief Technology Officer of RES. He has been responsible for product vision, strategy and development at RES since founding the company in 1999 and acts as the most prominent RES spokesperson at industry events. He was instrumental in the creation of the RES flagship products. During his tenure, RES 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 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, 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. He holds a Business Computing degree from the Fontys University of Applied Sciences.

Tracey Mustacchio
Chief Marketing Officer

As Chief Marketing Officer, Tracey is responsible for market strategy at RES, 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, 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.

Marc Zinnemers
Chief Operating Officer / Chief Financial Officer

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

Prior to RES, 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 VP 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. He earned his finance degree from the University of Tilburg in The Netherlands.

Gene Bonacci
General Manager and Vice President, Americas

Gene Bonacci is responsible for sales, channel partnerships and technology partnership for RES 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 VP 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 VP 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 in August 2007 as VP, 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.

Ms. Bouchalová started her education at the Charles University in Prague where she graduated with a Masters degree in English and Education. She then obtained an MBA degree at the Open University, UK.

Gerry de Bruijn
Vice President, Global Services and Customer Success

As VP of Global Services and Customer Success, Gerry de Bruijn oversees all customer programs, processes and best practices that contribute to helping enterprise IT departments quickly achieve value from their investment in RES. In his role, Mr. de Bruijn focuses on delivering agile services, fanatical support and dynamic enablement programs to valued RES customers and partners. He is also responsible for representing the ongoing needs of RES customers, including providing direct customer feedback into discussions regarding product roadmaps and RES business processes. He also oversees the RES customer community and solution assurance programs.

Before taking on his current role, Mr. de Bruijn worked directly with RES customers while managing a quickly growing support department. Under his leadership, RES has consistently achieved impressive customer satisfaction ratings, including a net promoter score that exceeds industry standards. Prior to joining RES, he held a variety of information technology roles for major global organizations, including Rabobank and Intentia (previously Lawson).

Mr. de Bruijn studied computer and information technology at Hogeschool in Utrecht, the Netherlands. He currently works out of the RES Americas headquarters.

Bob de Kousemaeker
Vice President, Research and Development

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

Previously Bob de Kousemaeker was a RES partner and solution architect at Capgemini, as well as earning deep experience with customer implementations of technologies from RES, 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.

Bob de Kousemaeker earned his Bachelor of Science degree from Hogeschool Rotterdam.

Carsten Thomsen
Vice President, EMEA

As VP, EMEA, Carsten Thomsen is responsible for the RES regional sales teams and sales engineers, as well as the company’s channel organization in EMEA. Mr. Thomsen joined RES in 2015 after tenure as General Manager of the Midis Group, which oversees a portfolio of businesses devoted to sell and service commercial office equipment, information and telecommunications system and software. Previously he was VP, Channels, Sales Programs & Strategy, EMEA, at Citrix Systems, where he led all sales activity in the region for cloud, system integrators, strategic alliances and channel partners. During his three and one-half years in that role, he tripled the revenue contribution from strategic system integrators, building a $225M pipeline, and established a dedicated Microsoft relationship manager team focusing on joint sales opportunities, closing $20M and building $100M in pipeline.

Mr. Thomsen was also Area VP at Citrix, responsible for the Nordic countries. Before his 13-year tenure at Citrix began, he was in sales roles with Hitachi Data Systems and SynergiData A/S.



RES Software Named a Cool Vendor in Infrastructure Services by Gartner

RES Software has been named a Cool Vendor in Gartner’s recent report, “Cool Vendors in Infrastructure Services, 2015.” The vendors selected, the report says, "are creating new approaches to capitalize on market opportunities and offer alternative choices to IT and business executives seeking impact from technology and infrastructure solutions.”


RES IT Store Wins Gold in Best in Biz Awards 2014

RES Software has been recognized for its RES IT Store product, which has been named the gold winner in the Best New Product of the Year for enterprises in Best in Biz Awards 2014, the only independent business awards program judged by members of the press and industry analysts.undefined

RES Software Nederland named a Best Place to Work 2015

We are pleased to announce that RES Software Nederland was named a Best Place to Work 2015 by Great Place to Work® Netherlands. A recognition earned directly from the feedback of RES Software employees. Every year, the highest scoring organizations are distinguished as Best Workplaces in the Netherlands. Great Place to Work® Netherlands investigates the level of trust, pride and pleasure in organizations through employee surveys and a culture audit questionnaire.

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

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Al Monserrat
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  • Featured Review

    Helpful (6)

    Excitement Growing with new CEO

    • Work/Life Balance
    • Culture & Values
    • Career Opportunities
    • Comp & Benefits
    • Senior Management
    Current Employee - Anonymous Employee
    Current Employee - Anonymous Employee
    Positive Outlook
    Approves of CEO

    I have been working at RES Software full-time (More than a year)


    With Al Monserrat as new CEO and continued growth of IT Store, excitement is growing at RES Software. RES has a large opportunity in front of us to help lead an IT shift to be more user centric. With the right technology, right leadership and a ripe industry, I believe there is a lot of opportunity for RES to grow. Customers share this excitement and enjoy working with RES and using the technology. There are continually product release updates which make customers happy to see new advancements and reaction to their product requests.


    Growth and new leadership can bring growing pains and sometimes employee turnover. Change is hard and at times can bring uncertainty before there is full clarity around future direction.

    Advice to Management

    Market dynamics are constantly changing and I believe RES has an opportunity to capture the opportunity. However, decisions need to be made quickly and have bandwidth to execute to avoid missing the opportunity in front of us.

RES Software Interviews

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Interview Experience


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Interview Difficulty



  1. Helpful (2)  

    Knowledge Manager Interview

    Anonymous Employee
    No Offer


    I applied through a recruiter. I interviewed at RES Software.


    This was a long process. It involved an initial phone interview and then an online personality test. That was followed by 3 in-person and 2 Skype interviews with senior management. I was successful with all of that and was told I would receive an offer letter. While waiting to receive the letter, past zero hour, I was told that the CEO suddenly recognized the importance of this position and wanted to interview me -- but that he'd be out for a week. At this point, a red flag went off. If the CEO did not trust the judgement of all the senior staff and the hiring process put in place, it seemed like an omen that a lot of good work and effort could also be derailed at the whim of the CEO. Since I was fortunate to be otherwise employed, I declined to continue this process.

    Interview Questions

    • How do you prioritize work when everything is "priority"?   Answer Question

RES Software Awards & Accolades

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Best New Product of the Year (Enterprise) - Gold , Best in Biz Awards, 2014

Additional Info

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

We’re the leading digital workspace technology company. For 15 years we've brought agility & enablement to the workforce while improving IT security. We do this through proactive & self-service access to the apps & services workers need when they need them, in a context that enables them to be most productive. Together, RES products: ~ Empower the ... More

Mission: We are a committed and agile team of people who have fun at work. Trust and respect permeate our relationships with each other. That's what makes us a great place to work – a place where people are inspired to be the best they can be.

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RES Software

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