About us

Our Purpose

At Previse Systems, we have set out to make ETRM software

  • more performant,
  • really user-friendly,
  • simpler and quicker to implement,
  • fast and efficient to adapt,
  • easy to connect and expand, and
  • much more cost-efficient!

Our Essentials

Our team members

  • have been in energy trading software for a long time,
  • are competent,
  • work hard,
  • enjoy what we are doing, and
  • are proud of our achievements!

Your next step?

Are you interested in joining a winning team?

Check here for current openings, or just drop us a note and let us know what you could contribute to our ongoing success!

The Previse Team

Florence Hayden

Florence is passionate about what she does, and she does a lot at Previse Systems! For her, it is all about the interaction with customers – as a product manager, translating requirements to specifications, as a product specialist, assisting customers in implementations and beyond, and of course as a pre-sales expert, introducing prospective customers to the breadth and depth of the software’s capabilities.

Florence has spent several years implementing and integrating ETRM software at energy companies all over Europe, given her comprehensive insights into the day-to-day operations and related software system requirements for electricity, natural gas and certificates trading in the European markets.

Florence lives in the Zurich area of Switzerland.

Christine Clemons

Christine adds customer value as a main asset for software integration and implementation projects.

With 7 years of consulting and software implementation experience for energy companies on both sides of the pond, Christine combines her expertise in European gas and power markets with a solid understanding of the underlying challenges energy companies face in the current market. Her detail-oriented work ethic and high adaptability to different cultures and fast-paced work environments ensure that customer expectations are consistently exceeded.

Christine lives in the Düsseldorf area of Germany and although she loves all animals, she plans to get a cat in the near future.

Anna Zalucka

Anna fulfils a variety of roles – in design & development, data analysis and documentation for Previse Systems and also as product owner of the Master Data Management as a Service offering on behalf of ChorusLink.

Anna has 15 years of experience in finance, consulting, services operations and project management. Her attention to detail and ability to coordinate a multitude of diverse tasks in an efficient manner provides vital support to several areas of Previse operations.

Anna lives in the Zug area of Switzerland with her partner and their son. Once circumstances allow, she will have a dog.

Eva Ollino

Eva acts as an interconnector between customers and product management – combining implementation tasks with the writing of specifications and software quality assurance.

Eva has 10 years of experience in software consulting in the energy sector, where she has worked in in various roles both for a software vendor and for a utility as software user, namely project manager, analyst and implementation consultant. She enjoys working with energy companies and translating business requirements into software functionalities. With her profound experience, her structured approach to problem-solving and her sense of duty, customers can rely on her to consistently deliver targeted solutions.

Eva lives in the Tallinn area of Estonia with her husband and two kids.

Birgit Rauch-Zumbrägel

Birgit leads the legal, finance and human resources functions at Previse Systems.

With a background of over 30 years in setting up and running finance, legal, HR and operations departments across various industries, most recently for an energy software company, Birgit’s diligence, business acumen and experience ensure a best-practice approach to operations and prudent cost management for Previse Systems.

Birgit lives in the Zurich area of Switzerland.

Martin Steeger

Martin oversees software design and product management at Previse Systems, a role in which he merges disruptive visions with meticulous attention to detail.

Equipped with a 20-year background in the energy software industry, Martin has worked in both design and project roles at energy companies as well as for different software vendors. This has given him the unique insights into customers’ business processes and requirements that he now translates into Previse Systems’ software capabilities.

Martin lives in the Zurich area of Switzerland with his family and a few pets.

Asbjørn Hansen

Asbjørn is the soul and principal driving force behind Previse Systems.

Asbjørn has spent all his professional life – starting in 2000 – in energy trading. Initially working for a major utility in multiple different roles, he developed a profound expertise in business processes and their interplay with information technology, which eventually led him to join a vendor of trading software. Over the last 14 years, he has become a trusted adviser to some of Europe’s largest energy trading companies who have benefitted from his exceptional skills and his thorough understanding of energy value chains. His passion for excellence and his constant search for the optimal solution fuels Previse Systems’ vision for a new approach to energy trading software.

Asbjørn lives in the Zug area of Switzerland with his wife and Martin’s cat.

Basil Twisleton

Basil leads software development at Previse Systems.

With over 10 years of technical experience in the financial and commodity industries, he is well-equipped to deliver our software platforms to the world. A strong believer of “design it right, build it once”, he draws the perfect balance of skills to run our development team from years spent designing, developing, administering and supporting software systems.

Basil lives in the Zurich area of Switzerland with his girlfriend. (If he had a pet, it would be a panda bear.)

Péter Baghy

Péter wears several hats at Previse Systems. Besides his important contributions to product management – new feature design and development, quality assurance, release management, database management – he is also tasked with establishing and running customer support.

With a background of 10 years in a variety of roles around ETRM application management, including project implementation and support roles with both a leading gas trading company and an ETRM software vendor, his thorough understanding of technology and his commitment to customer satisfaction, Péter is an anchor team member for Previse Systems in various departments of our organisation.

Péter lives in the Zurich area of Switzerland with his wife.

Alex Suciu

Alex is a core contributor to various aspects of product development at Previse Systems.

Well versed in modern aspects of information technology, Alex’ specific areas of interest include distributed systems, machine learning, “big data” and data engineering, business intelligence and advanced analytics. In combination with a sound familiarity with the architecture of traditional E/CTRM solutions, his expertise is key to advance Previse Systems’ New Paradigm for energy trading software.

Alex lives in the Zurich area of Switzerland. He likes dogs but plans to have a cat in the course of 2022 now (didn’t happen in 2021 as originally planned …).

Marc Zumstein

Marc drives business development, marketing and communications at Previse Systems.

Marc has over 15 years of trading and risk management software sales and business development under his belt, 10 of which in the energy industry. He is passionate about efficient, transparent and professional interactions with customers and partners, and sees sales as the permanent quest for “win-win” for all involved parties.

Marc lives in the Zurich area of Switzerland with his family, four dogs and four guinea pigs.

Lorenzo Costantini

Lorenzo is a key resource in Previse Systems’ software development team.

Lorenzo combines a sound background in both technology and the energy markets with a drive to perfection and a fundamental curiosity about finding ways to continuously improve the software. His specific areas of interest include Smart Contracts, workflow management, trade load optimisation and the integration with algorithmic trading and quality assurance on those and other components of Previse Systems’ product. Lorenzo thrives on working through new concepts and translating customer requirements into working code.

Lorenzo lives in the Zurich area of Switzerland.

Stuart Bishop

Stuart leads various aspects of product development at Previse Systems.

Stuarts works as a product owner for the Framework UI and collaborates on many core functionalities, but his primary focus lays with the App EcoSystem. He fulfills the role of both architect and developer – creating and bringing this phenomenal suite of technologies to life. Stuart believes that Apps are the way forward for enhancement, customization, and integration of Coral with client and third-party systems.

Stuart has worked as a developer in the CTRM sector for longer than he can remember. He loves working with clients and wielding our technologies to solve their problems, nearly as much as he loves creating the technology itself.

Stuart lives by the Grand Union Canal in the heart of England, where with his partner, Stuart raises ungrateful ducks, makes glass, and plays the guitar … poorly.

Simon Wood

Simon is the Head of Delivery at Previse Systems ensuring the successful implementation of the software for our clients.

With over 23 years of project and large program management experience, as well as 10 years working for ETRM vendors, he is well-equipped to drive and ensure successful delivery of our software platform for our clients.  A strong believer of “do the right thing, not the easy thing”, he works tirelessly to create an atmosphere of collaboration across Previse Systems, our clients and our partner organisations – to ensure successful deliveries and joint successful outcomes for all parties.

Simon lives in West Sussex in the UK with his wife and pet cat Riley.

Benediktus Olschok

Benediktus advocates a compelling product experience driving the success of our customers by underlining the significance of quality assurance.

Benediktus brings 30 years of IT experience in various production, development, operation, and verification and validation contexts – mainly focused on product testing, infrastructure management, system and software integration as well as process definition. He strongly believes that product quality is a joint effort that needs to be built in, not bolted on.

Benediktus lives in the Nuremberg area of Germany with his family. They don’t have pets but like strange owls.

Christopher Jankowski

Chris is a key contributor to the sales and marketing team, bringing fresh ideas and a much-appreciated outside perspective.

With 5 years of experience in SaaS business development, Chris is rapidly establishing his foothold in Previse Systems’ sales while at the same time supporting marketing as the company’s social media manager.

Chris has lived across many European countries and picked up several languages along the way, among them Polish, English, French and most recently also Spanish.

Chris lives in the Geneva area of Switzerland with his family.


At the advanced age of 14, Usi has long retired from active duty but still accompanies us to our annual offsite meetings in the mountains.

A top notch office dog, he ensures that during our workshops we are not molested by cats or mice so that we can fully concentrate on the future of Previse Systems. During our occasional hikes, he keeps us entertained by encouraging us to throw pine cones for him to fetch – a game that he can enjoy for hours.

Usi lives in the Zurich area of Switzerland with his owners (whom he likes a lot) and some other dogs (that he does not care for much).


Materials for Download

FORRS: New Frontiers in Energy Trading Architectures (Sep 2021)
Thoughts on Monolithic ETRM Implementations (Jul 2021)
Trade Templates & Market Templates (Apr 2021)
GoO Trading (Feb 2021)
Previse Brochure (Dec 2020)
Master Data Management as a Service (Nov 2020)
ChorusLink Brochure (Nov 2020)
White Paper (Oct 2020)


    Previse Systems AG


    Previse Systems AG
    Loretohöhe 32
    6300 Zug


    Authorised Representatives

    Asbjørn Hansen, CEO
    Martin Steeger, Head of Product Management
    Birgit Rauch-Zumbrägel, Head of Admin & Finance
    Marc Zumstein, Business Development & Communications

    Commercial Registry

    Registered Company Name: Previse Systems AG
    Commercial Registry Nr.: CHE-161.828.098


    CHE-161.828.098 MWST

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    Energetech chooses Previse Systems as its new Energy Trading Platform

    Energetech Trading DMCC, headquartered in Dubai, a fast-expanding energy trading house active on European gas, power and emissions markets, has chosen Previse Systems to supply the firm’s new energy trading solution.

    Ørsted selects Previse Systems to supply new Energy Trading Management System

    Ørsted has selected Previse Systems as the supplier of its new Energy Trading Management (ETM) system.

    Nexus Energía selects Previse Systems’ ETRM Solution

    Nexus Energía, a key player in the Spanish renewable energy market, has selected Previse Coral as their new ETRM platform.

    Energie Wasser Bern selects Previse Systems’ ETRM platform

    The city utility of the Swiss capital Bern, has chosen the Previse Coral ETRM platform to support its ambitions in the field of energy trading!

    ane.energy selects Previse Systems’ ETRM platform

    The energy trading company ane.energy, based in northern Germany, has chosen the Previse Coral ETRM platform as the core application to support trading activities and ensure robust infrastructure scalability for future growth.

    Taking Efficiency in Energy Trading to the Next Level – Norlys Energy Trading 🇩🇰

    Full trade lifecycle automation in one unified workflow with Previse Systems and Fidectus at Norlys Energy Trading.

    A Previse Systems Success Story – Norlys Energy Trading 🇩🇰

    “Previse Systems rethink the way ETRM software is designed – they have built a software that actually supports today’s trading patterns” says Michelle Rønne, Head of Back Office at Norlys Energy Trading A/S.

    Previse Systems attends the REC Market Meeting 2022 in Amsterdam

    Learn how renewable energy trading can be managed in a modern software tool: meet with Florence Hayden and Asbjørn Hansen at the REC Market Meeting 2022 in Amsterdam (5./6. April)!

    Lorenzo Costantini joins Previse Systems as Software Developer

    Previse Systems is pleased to announce our new colleague Lorenzo Costantini, who has joined us as Software Developer. Lorenzo combines two truly unique skillsets: software development in Previse Systems’ technology stack and several years of…

    Previse Systems Kicks Off ETRM Educational Mini-Series

    Listen in to Previse Systems' Asbjørn Bjarke Hansen talk about current trends in the energy markets and the competitive edge of the right technology in today's energy trading environment.

    Ørsted selects Previse Coral and ChorusLink for Day-Ahead and Intraday Power Trading

    Previse Systems announced today that Ørsted has selected Previse Coral and ChorusLink for their day-ahead and intraday power trading operations in Denmark.

    Florence Hayden joins Previse Systems as Product and Markets Specialist

    Previse Systems is excited to announce that Florence Hayden has joined our growing team as Product and Markets Specialist. With several years of international experience in the delivery and integration of ETRM software, Florence now fills a much…


    Materials for Download

    FORRS: New Frontiers in Energy Trading Architectures (Sep 2021)
    Thoughts on Monolithic ETRM Implementations (Jul 2021)
    Trade Templates & Market Templates (Apr 2021)
    GoO Trading (Feb 2021)
    Previse Brochure (Dec 2020)
    Master Data Management as a Service (Nov 2020)
    ChorusLink Brochure (Nov 2020)
    White Paper (Oct 2020)


      Previse Coral

      Previse Coral is a uniquely designed Energy Trade and Risk Management (ETRM) system, based on the ChorusLink common trade repository. Previse Coral stands for highly performant valuation and reporting, combining external (market-facing) trades, pushed automatically from ChorusLink, with internal trades, production/consumption forecasts as well as market prices.

      Using in-cache reporting for superior performance, Previse Coral calculates mark-to-market, profit & loss as well as exposures, and also includes robust management of limits and market conformity. Previse Coral utilizes the standardized master data repository in ChorusLink, updating automatically when new master data becomes available.

      The valuation and reporting engine is designed for classical end of day reports as well as real-time valuations – the latter employs data aggregation to avoid wasting resources on revaluing positions that have not changed.

      Whether portfolio-relevant changes arrive in terms of prices or position changes, the engine automatically generates delta time series and pushes these to any subscribing reports converted to the currency and unit of the report.

      The Previse Coral approach serves as the valuation and reporting basis and provides more accurate and timely visibility of positions than otherwise available in today’s marketplace.

      Previse Coral Technology

      Previse Coral is developed using .Net Core, microservices and Azure functions (serverless computing); it is optimised for performance and designed for granularities down to 1 minute.

      Previse Coral is delivered as subscription-based Software as a Service (SaaS), hosted in Microsoft’s Azure cloud, with continuous delivery and release management down to microservice level. It includes with built-in automated testing – i.e. entirely avoiding any future (traditional) upgrades of the solution.

      The design ensures that the solution is state of the art, flexible and extremely low-cost for companies to deploy and maintain. In addition, it simplifies the IT landscape and the related cost of ownership significantly.

      Coral Ecosystem

      The Coral Ecosystem complements Previse Coral with an app-store-like platform to add custom or reusable functionality to the software. The Ecosystem allows Previse Systems, Coral customers or 3rd parties (e.g. software developers or consulting companies) to develop, publish and resell Apps to add specific functionality onto Previse Coral. The design ensures that the Apps are seamlessly available as part of the overall solution. The Ecosystem also allows Coral customers to resell Apps they have built to other companies to share development and maintenance costs, and also to build and maintain Private Apps, if the functionality is deemed proprietary or sensitive from a competitive point of view.

      A core benefit of the Coral Ecosystem lies in its facilitating distributed development, removing the bottleneck of a single development department responsible not only for new software production, but also of supporting (typically various versions of) a software.

      External developers of Apps deliver standardized functionality (e.g. interfaces) that can be be used across multiple customers ensuring speed and cost efficiency. The Ecosystem ensures that any enhancements are automatically deployed to all customers ensuring that they always have the latest version of the App.

      By offering off-the-shelf Apps which are already tested and deployed at other customers, the Coral Ecosystem delivers a unique advantage for Coral customers by minimizing their time to market. The Coral Ecosystem also caters for the following processes:

      App Development Partners have access to development and test environments as well as extended API documentation and tools, allowing them to develop Apps in the most efficient way. Previse conducts code reviews and perform quality checks for Apps that will be made available for resale on the Ecosystem.

      • App Purchasing: companies can buy available Apps directly from certified vendors via the Ecosystem. As Apps have a limited lock-in period, the quality/price relation is warranted – customers can easily test alternative Apps and switch to these, if their proposition is seen as superior.
      • App Commissioning: companies can contract with a development partner for the bespoke delivery of specific functionality in the form of an App.
      • App Tendering: companies can post their requirements for certain functionality to be developed in the form of an App for a) other companies to join the request and b) for development partners to submit proposals. This will be facilitated on the platform and ensure competitive bids.