CelTom Software
The world of development is large, and many new and evolving technologies continually push the limits of what a developer can create. Staying on top of cutting-edge technology and techniques in the development field is one of the many exciting aspects of working in this role. CCV (1987 - 1997)
After developing a number of administrative and financial applications, I was given the task of developing the software for the security board of CCV's first payment PIN terminal (Pay-O-Maat) in the Netherlands. I learned to program in the language C (Ansi-C). At that time, the security software was burned on an Eprom and, with the board and all, cast in a plastic resin with censors for burglary, light, temperature, etc. The software was therefore not replaceable and therefore had to be completely bug-free. After the introduction of electronic payment, developments in this area moved quickly and the new terminals could be provided with new software remotely. The security of those systems had to meet the highest requirements and I was able to further build up my knowledge in that area. In addition to the embedded software for POS terminals like for the Verifone, I also developed applications related to the transactions, such as the communication front-end processors, the pin mailer programs, the authorization systems, the simulators and the loading systems for the security keys and the backend application software. At that time, expansions of the payment options with chip cards also emerged, such as Chipknip and Chipper, for which I also wrote the necessary software for the payment terminals. 
Smart Concepts (1997 - 2007)
In 1997 I received an offer from Smart Concepts in Doetinchem, which consisted of 2 of my former CCV colleagues, to create my own integrated platform. Here I learned to program in Microsoft Visual Foxpro and different variants of C/C++. The first assignment was to rewrite the software for machines that could emboss plastic cards and then merge them with the correct card carriers/leaflets/letters/envelopes and address labels. We then received various orders for administrative and loyalty card applications for Nikon, HP, van der Valk, Keurslagers, LOKO (Rabobank) and the platforms for the fuel cards and the authorization of transactions for Texaco, Chevron, Q8, de Haan and the loyalty system Rocks (Texaco, Super de Boer). We have also developed various payment and loyalty terminals, like for Q8 the Panasonic terminal which could print thermochromic cards so that the customers could see their current balance including commercial images on the outside of their physical card. About
My name is Martin Höller, born in Hülscheid Germany in 1963 and from 1965 living and raised in Apeldoorn in the Netherlands. After successfully completing the Pedagogical Academy in Arnhem in 1985, I received the offer from the local authority to take a course as Courseware developer to create educational programs. During this training at Qmar in Beekbergen I learned to program in Pilot and Logo, languages with which graphic applications and animations could be created, which was exceptional advanced for PC platforms at that time. After finishing the cource I have worked for 4 companies during my carreer. On the 1st of April 2023 I have founded “CelTom Software” and will be available on project base as freelance “Senior Software Architect”. My expertise is aimed at developing systems in the field of loyalty, giftcard, payment, e-voucher, fleetcard, access and membership card systems and the integration of these with other modules. By placing functionalities in an integrated system, you not only prevent data leaks by exchanging personal data with other companies, but you also make it easier and clearer for the customer if he can do the entire management within one application and monitor the results. 
Interested?
Contact me and let's see if I would be the good partner who thinks along, and helps you to solve your challenges.ICP Companies (2007 - 2009)
In 2007 Smart Concepts was taken over by ICP Companies and later devided in 3 parts (loyalty, payment and fleetcard branch). In these years I worked on the Dione (Verifone) payment terminals which were developed in Exta-C and the communication hosts, the Terminal Management System and other loading and backoffice systems and tools. The terminals were first using the ITA technolagy, which was based on security software in a SAM but were soon replaced with terminals using CTAP with a security chip. In 2009 ICP Doetinchem moved to, and merged with, ICP in Hoofddorp. I decided not to go and switched to Intersolve in Hoevelaken. Intersolve (2010 - 2012)
Intersolve is a leading service provider specialising in gift cards, loyalty, e- vouchers, e-wallets and payments. Here I learned a lot more about SQL- Server (Transact-SQL) and OOP (Object Oriented Programming) in .NET Framework C# and ASP. I worked on applications for a loyalty / giftcard / coupon terminal and changed and added functionality to the existing switching platform, card generation tool and created APIs and tools for mailings and processing transactions, for example for the OV-Chipkaart (public transport). ICP Companies (2012 - 2023)
In 2012 I returned to ICP Companies, which was already moved from Doetinchem and merged with ICP Hoofddorp (formerly Payzone) after I received an offer to build a completely new platform for processing and switching loyalty, giftcard, e-voucher, topup and payment transactions. Due to the faster and cheaper communication lines, the real-time and online applications rose sharply at that time and a lot of functionality moved from client side to server side and became more and more web-based. I was able to set up the platform which could process and switch the requests of transactions of all kind of e-voucher (topup) products, giftcards, loyalty, coupons, payment, tickets, inlane lottery tickets, prepaid cards, software licenses, gamecards, employee cards and SIM activation transactions over one generic webservice API using SOAP/XML, REST/JSON and TCP-IP/TLV. The platform was named “Mimas” and the cash-registers of Kruidvat, Jumbo, Lidl, Action, KPN, Blokker, Casa, Lekkerland, Obelink, Miniso, Trekpleister, Mitra, Sligro, Agri-Retail, Intertoys, etc. were connected to it, as well as the online systems of Trendyfoods, Recharge, Kaartdirect, Cysend, Offerz, MBXP, DetailResult, Reloadbase, GamecardsDirect and several German and Polish retail chains and webshops. The platform could switch requests to other processor gateways like the ones of Intersolve, Paysafecard, Blackhawk, Epay, Abacus, Fashioncheque, Cashlib, VTC, Prepaid Factory, Intralot, TCS, Ticket Surf International (TSI), Aleda, Orange, Proximus, Neosurf, G-Tech LNB, Keplerk, Prepaid Cash Services (PCS), CM.COM, Prepay Nation, Content Card, Busybirds and Aplauz. The Verifone CTAP PIN terminals were replaced with terminals that were using the Pay Plaza solution. For this I implemented the interface with the Pay Plaza host for an interface with the customers cash-registers (XTIL.NEXT). For KPN I have implemented a PIN-Server solution where the Ingenico terminals and the web-based KPN POS systems were connected to. Beside the Mimas switching platform the fleetcard authorisation system iTrans (using ISO8583 / IFSF / OASE protocol) for Lodder and the virtual web-based Mimas terminal for selling e-voucher and giftcard products were developed. All the processes for the import and export of files, report generation reconciliation and the creation of invoice files (EDI, DES/ADV, XML, CSV, TXT) and interface with Navision was all handled by the Mimas processing module. Carreer
With ICT professionals, everything goes by
itself, but nothing automatically
CelTom Software
The world of development is large, and many new and evolving technologies continually push the limits of what a developer can create. Staying on top of cutting-edge technology and techniques in the development field is one of the many exciting aspects of working in this role. CCV (1987 - 1997)
After developing a number of administrative and financial applications, I was given the task of developing the software for the security board of CCV's first payment PIN terminal (Pay-O-Maat) in the Netherlands. I learned to program in the language C (Ansi-C). At that time, the security software was burned on an Eprom and, with the board and all, cast in a plastic resin with censors for burglary, light, temperature, etc. The software was therefore not replaceable and therefore had to be completely bug-free. After the introduction of electronic payment, developments in this area moved quickly and the new terminals could be provided with new software remotely. The security of those systems had to meet the highest requirements and I was able to further build up my knowledge in that area. In addition to the embedded software for POS terminals like for the Verifone, I also developed applications related to the transactions, such as the communication front-end processors, the pin mailer programs, the authorization systems, the simulators and the loading systems for the security keys and the backend application software. At that time, expansions of the payment options with chip cards also emerged, such as Chipknip and Chipper, for which I also wrote the necessary software for the payment terminals. 
Smart Concepts (1997 - 2007)
In 1997 I received an offer from Smart Concepts in Doetinchem, which consisted of 2 of my former CCV colleagues, to create my own integrated platform. Here I learned to program in Microsoft Visual Foxpro and different variants of C/C++. The first assignment was to rewrite the software for machines that could emboss plastic cards and then merge them with the correct card carriers/leaflets/letters/envelopes and address labels. We then received various orders for administrative and loyalty card applications for Nikon, HP, van der Valk, Keurslagers, LOKO (Rabobank) and the platforms for the fuel cards and the authorization of transactions for Texaco, Chevron, Q8, de Haan and the loyalty system Rocks (Texaco, Super de Boer). We have also developed various payment and loyalty terminals, like for Q8 the Panasonic terminal which could print thermochromic cards so that the customers could see their current balance including commercial images on the outside of their physical card. About
My name is Martin Höller, born in Hülscheid Germany in 1963 and from 1965 living and raised in Apeldoorn in the Netherlands. After successfully completing the Pedagogical Academy in Arnhem in 1985, I received the offer from the local authority to take a course as Courseware developer to create educational programs. During this training at Qmar in Beekbergen I learned to program in Pilot and Logo, languages with which graphic applications and animations could be created, which was exceptional advanced for PC platforms at that time. After finishing the cource I have worked for 4 companies during my carreer. On the 1st of April 2023 I have founded “CelTom Software” and will be available on project base as freelance “Senior Software Architect”. My expertise is aimed at developing systems in the field of loyalty, giftcard, payment, e-voucher, fleetcard, access and membership card systems and the integration of these with other modules. By placing functionalities in an integrated system, you not only prevent data leaks by exchanging personal data with other companies, but you also make it easier and clearer for the customer if he can do the entire management within one application and monitor the results. 
Interested?
Contact me and let's see if I would be the good partner who thinks along, and helps you to solve your challenges.Intersolve (2010 - 2012)
Intersolve is a leading service provider specialising in gift cards, loyalty, e-vouchers, e-wallets and payments. Here I learned a lot more about SQL-Server (Transact-SQL) and OOP (Object Oriented Programming) in .NET Framework C# and ASP. I worked on applications for a loyalty / giftcard / coupon terminal and changed and added functionality to the existing switching platform, card generation tool and created APIs and tools for mailings and processing transactions, for example for the OV-Chipkaart (public transport). ICP Companies (2007 - 2009)
In 2007 Smart Concepts was taken over by ICP Companies and later devided in 3 parts (loyalty, payment and fleetcard branch). In these years I worked on the Dione (Verifone) payment terminals which were developed in Exta-C and the communication hosts, the Terminal Management System and other loading and backoffice systems and tools. The terminals were first using the ITA technolagy, which was based on security software in a SAM but were soon replaced with terminals using CTAP with a security chip. In 2009 ICP Doetinchem moved to, and merged with, ICP in Hoofddorp. I decided not to go and switched to Intersolve in Hoevelaken. Carreer
ICP Companies (2012 - 2023)
In 2012 I returned to ICP Companies, which was already moved from Doetinchem and merged with ICP Hoofddorp (formerly Payzone) after I received an offer to build a completely new platform for processing and switching loyalty, giftcard, e-voucher, topup and payment transactions. Due to the faster and cheaper communication lines, the real-time and online applications rose sharply at that time and a lot of functionality moved from client side to server side and became more and more web-based. I was able to set up the platform which could process and switch the requests of transactions of all kind of e-voucher (topup) products, giftcards, loyalty, coupons, payment, tickets, inlane lottery tickets, prepaid cards, software licenses, gamecards, employee cards and SIM activation transactions over one generic webservice API using SOAP/XML, REST/JSON and TCP-IP/TLV. The platform was named “Mimas” and the cash-registers of Kruidvat, Jumbo, Lidl, Action, KPN, Blokker, Casa, Lekkerland, Obelink, Miniso, Trekpleister, Mitra, Sligro, Agri-Retail, Intertoys, etc. were connected to it, as well as the online systems of Trendyfoods, Recharge, Kaartdirect, Cysend, Offerz, MBXP, DetailResult, Reloadbase, GamecardsDirect and several German and Polish retail chains and webshops. The platform could switch requests to other processor gateways like the ones of Intersolve, Paysafecard, Blackhawk, Epay, Abacus, Fashioncheque, Cashlib, VTC, Prepaid Factory, Intralot, TCS, Ticket Surf International (TSI), Aleda, Orange, Proximus, Neosurf, G-Tech LNB, Keplerk, Prepaid Cash Services (PCS), CM.COM, Prepay Nation, Content Card, Busybirds and Aplauz. The Verifone CTAP PIN terminals were replaced with terminals that were using the Pay Plaza solution. For this I implemented the interface with the Pay Plaza host for an interface with the customers cash-registers (XTIL.NEXT). For KPN I have implemented a PIN-Server solution where the Ingenico terminals and the web-based KPN POS systems were connected to. Beside the Mimas switching platform the fleetcard authorisation system iTrans (using ISO8583 / IFSF / OASE protocol) for Lodder and the virtual web-based Mimas terminal for selling e-voucher and giftcard products were developed. All the processes for the import and export of files, report generation reconciliation and the creation of invoice files (EDI, DES/ADV, XML, CSV, TXT) and interface with Navision was all handled by the Mimas processing module. 
With ICT professionals, everything goes by
itself, but nothing automatically
