enterprise platforms · banking and capital markets

The MX.3 upgrade depends on a datamart nobody documented and a three-week regression pack.

Trading and core banking platforms run the books, and they change slowly for good reason. We upgrade Murex MX.3, Calypso and Temenos Transact estates and rebuild the integrations and reports around them. We also automate regression testing and staff the specialists these platforms need.

enterprise-platforms / banking-capital-markets 6 platforms
01 · INPUTS 02 · TRADING AND CORE 03 · DOWNSTREAM 04 · DATA AND REPORTING Market data: prices · curves · rates Market data prices · curves ·rates Front office: traders · sales Front office traders · sales Digital channels: Temenos Infinity Digital channels Temenos Infinity Murex MX.3: trading · risk · ops Murex MX.3 trading · risk · ops Calypso: trade capture · collateral CAL Calypso trade capture ·collateral Temenos Transact: accounts · payments Temenos Transact accounts · payments Settlement and payments: confirmations · SWIFT Settlement andpayments confirmations · SWIFT General ledger: accounting entries General ledger accounting entries Data platform: risk · regulatory returns Data platform risk · regulatoryreturns Reconciliations: positions · cash Reconciliations positions · cash
Murex MX.3Nasdaq CalypsoTemenos Core BankingSnowflake
in short·15-second read

Banking and capital markets platforms are the systems banks use for trading, risk and core banking.

Murex MX.3 and Calypso cover front-to-back trading, while Temenos Transact and Infinity cover core and digital banking. Cohash upgrades these platforms and builds their integrations with market data, payments and finance. We automate regression testing and manage environments. We also place certified specialists on contract, contract-to-hire or permanent terms.

you probably need this if
  • The MX.3 version you run is approaching the end of vendor support, and nobody has scoped the upgrade.
  • Regression testing for each release takes weeks of manual trade-by-trade checks.
  • Datamart reports feed your regulatory returns, and nobody can tell you which of them will change in the next version.
Ask an engineer facts checked 2026-10-20 · 4 sources
how it runs
  1. 01Estate review
  2. 02Upgrade plan
  3. 03Test and rehearse
  4. 04Go live and support
you keep
  • Estate inventory of customizations, interfaces and reports
  • Version change impact analysis against your configuration
  • Automated regression pack comparing trades, valuations and accounting
+ 2 more documents
who does it
Murex MX.3 functional consultantMurex datamart developerCalypso technical consultant
the story · banking & capital markets platforms

From the first call to a setup your own team can run.

Here's what usually prompts a call about your Banking & Capital Markets Platforms, what we do about it and in which order, and where you end up.

  1. chapter 01 · where it hurts

    Why teams reach out

    • The MX.3 version you run is approaching the end of vendor support, and nobody has scoped the upgrade.
    • Regression testing for each release takes weeks of manual trade-by-trade checks.
    • Datamart reports feed your regulatory returns, and nobody can tell you which of them will change in the next version.
  2. chapter 02 · what we change

    How we solve it

    • Murex MX.3 upgrades and support
    • Calypso upgrades and integrations
    • Temenos Transact and Infinity
    • Regression test automation
    • Integration with the rest of the bank
    • Specialist staffing
  3. chapter 03 · how it runs

    Our approach

    • Estate review
    • Upgrade plan
    • Test and rehearse
    • Go live and support
  4. chapter 04 · where you end up

    What changes

    • Analysts look only at breaks with an explanation attached, not every trade.
    • Fewer local developments go into the upgrade, and every one has an owner.
    • Estate inventory of customizations, interfaces and reports
    • Version change impact analysis against your configuration
what we do

Where we spend the hours

6 areas of work, each one done by an engineer who has run it in production.

  1. Version upgrades, datamart and reporting changes, trade workflow and static data setup, and environment refreshes. The first job is working out which of your customizations and reports actually change in the target version.

  2. Our Calypso work covers upgrades, trade capture and confirmation flows, risk and accounting interfaces, and engine configuration. Nasdaq owns Calypso now, through its acquisition of Adenza. We review roadmap and support terms during planning for that reason.

  3. Core banking configuration and local developments in Temenos Transact, which used to be called T24. We also work on digital banking in Temenos Infinity and the integration between the two.

  4. Manual checks of an upgrade regression run take weeks. We automate the comparison of trades, valuations, cash flows and accounting entries between current and target versions, and it takes days.

  5. Market data, payments, general ledger, regulatory reporting and data platforms, through message queues and APIs with reconciliations at each boundary.

  6. Murex and Calypso functional and technical consultants, datamart developers, environment managers and Temenos developers, onsite, nearshore or offshore.

capability 01 / 06in production

Murex MX.3 upgrades and support

Version upgrades, datamart and reporting changes, trade workflow and static data setup, and environment refreshes. The first job is working out which of your customizations and reports actually change in the target version.

capability 02 / 06in production

Calypso upgrades and integrations

Our Calypso work covers upgrades, trade capture and confirmation flows, risk and accounting interfaces, and engine configuration. Nasdaq owns Calypso now, through its acquisition of Adenza. We review roadmap and support terms during planning for that reason.

capability 03 / 06in production

Temenos Transact and Infinity

Core banking configuration and local developments in Temenos Transact, which used to be called T24. We also work on digital banking in Temenos Infinity and the integration between the two.

capability 04 / 06in production

Regression test automation

Manual checks of an upgrade regression run take weeks. We automate the comparison of trades, valuations, cash flows and accounting entries between current and target versions, and it takes days.

capability 05 / 06in production

Integration with the rest of the bank

Market data, payments, general ledger, regulatory reporting and data platforms, through message queues and APIs with reconciliations at each boundary.

capability 06 / 06in production

Specialist staffing

Murex and Calypso functional and technical consultants, datamart developers, environment managers and Temenos developers, onsite, nearshore or offshore.

typical situations

Situations we walk into

We pieced these together from Banking & Capital Markets Platforms situations that come up a lot. They're patterns. You won't find a specific client in them.

case file 01

MX.3 upgrade where regression means three weeks of spreadsheet checks

composite · not a client story
  1. Beforethe situation

    In every Murex upgrade test cycle, analysts export trades and valuations from both versions and compare them in spreadsheets. Just two cycles eat up most of the upgrade window.

  2. What we dothe work

    Build an automated comparison of trade attributes, valuations, cash flows and accounting entries between versions, with tolerances agreed with risk. Run it on a full copy of the book, then review only the breaks.

  3. Afterwhere you end up

    Analysts look only at breaks with an explanation attached, not every trade. More test cycles fit in the window. The comparison pack gets reused next upgrade.

case file 02

Temenos Transact with local developments blocking an upgrade

composite · not a client story
  1. Beforethe situation

    A bank's Transact install carries years' worth of local developments. The upgrade assessment flags a large share as incompatible, and nobody in the business can say which ones are still in use.

  2. What we dothe work

    Trace every local development to the transactions and reports that use it. If nothing uses it, retire it. Map the rest to base functionality in the target release where it exists.

  3. Afterwhere you end up

    Fewer local developments go into the upgrade, and every one has an owner. Code you retired is code you don't have to test.

case studies

Banking & Capital Markets Platforms case studies

All case studies
architecture

How trading and core banking platforms connect across a bank

Front office books trades in Murex or Calypso, which take market data and send confirmations, settlements and accounting entries downstream. Temenos Transact holds customer accounts and payments, and both feed the data platform used for risk and regulatory reporting.

How trading and core banking platforms connect across a bank Front office books trades in Murex or Calypso, which take market data and send confirmations, settlements and accounting entries downstream. Temenos Transact holds customer accounts and payments, and both feed the data platform used for risk and regulatory reporting. 01 · INPUTS 02 · TRADING AND CORE 03 · DOWNSTREAM 04 · DATA AND REPORTING market data trades trades customer requests confirmations accounting payments datamart extracts account data compare Market data prices · curves · rates Front office traders · sales TE Digital channels Temenos Infinity MU Murex MX.3 trading · risk · ops CAL Calypso trade capture ·collateral TE Temenos Transact accounts · payments Settlement and payments confirmations · SWIFT General ledger accounting entries Data platform risk · regulatoryreturns Reconciliations positions · cash
Read the diagram as text
  1. Market data → Murex MX.3: market data
  2. Front office → Murex MX.3: trades
  3. Front office → Calypso: trades
  4. Digital channels → Temenos Transact: customer requests
  5. Murex MX.3 → Settlement and payments: confirmations
  6. Murex MX.3 → General ledger: accounting
  7. Temenos Transact → Settlement and payments: payments
  8. Murex MX.3 → Data platform: datamart extracts
  9. Temenos Transact → Data platform: account data
  10. Data platform → Reconciliations: compare
how it runs

A typical engagement

We don't start a step until the last one has produced something you can check.

  1. step 01

    Estate review

    Version, customizations, interfaces, reports, environments and the current regression process, documented with the platform owners.

  2. step 02

    Upgrade plan

    Changes between versions mapped to your configuration, with the test approach, environment plan and cutover options agreed with front office, risk and finance.

  3. step 03

    Test and rehearse

    We run automated comparisons between versions on production-like data, and the business signs off on the expected differences.

  4. step 04

    Go live and support

    Cutover over a weekend or a period close, followed by hypercare and handover of runbooks and test packs.

you keep

What you're left with

We write these for your Banking & Capital Markets Platforms setup, and they're working documents. Your team should be able to keep things running from them long after we've gone.

  • inventory01

    Estate inventory of customizations, interfaces and reports

    yours to keep
  • report02

    Version change impact analysis against your configuration

    yours to keep
  • tests03

    Automated regression pack comparing trades, valuations and accounting

    yours to keep
  • plan04

    Environment plan with refresh and data masking procedures

    yours to keep
  • runbook05

    Cutover runbook with rehearsal timings

    yours to keep
talent and delivery · banking & capital markets platforms

Certified engineers, wherever you need them.

Some clients want a project team, some want a couple of engineers on theirs. Either works. Onsite, nearshore or offshore, with handovers across time zones that keep things moving.

Onsite

Engineers at your sites in the US

Nearshore

Overlapping hours with US teams

Offshore

Overnight progress on your backlog

All time zones

Coverage handed over across time zones

24-hour coverage · US Central time
OnsiteUS business hours
Nearshoreoverlapping US hours
Offshoreovernight progress
Combinedhandover, not hand-off
roles we staff
  • Murex MX.3 functional consultant
  • Murex datamart developer
  • Calypso technical consultant
  • Temenos Transact developer
  • Trading platform environment manager
  • Capital markets test automation engineer
01How long does a Murex or Calypso upgrade take?

That depends on the version gap, how much is custom and how long regression takes. Manual regression usually eats the most time, so test automation is the first thing we look at.

02What drives upgrade cost?

Custom reports and datamart extractions, how many interfaces you have, whether environments are available and how much business testing is needed. Banks that already have automated regression packs tend to get through upgrades with less disruption.

03Has Calypso's ownership changed?

Yes. Nasdaq completed its acquisition of Adenza, the owner of Calypso and AxiomSL, on 1 November 2023. Check your support contract and roadmap commitments with Nasdaq as part of any upgrade plan.

04Do you work on core banking as well as trading?

Yes. On core banking we work on Temenos Transact, and on digital banking, Temenos Infinity. That's alongside our Murex and Calypso work for trading and risk.

05Can you provide Murex or Calypso specialists without a full project?

Yes. Our staffing practice places certified functional and technical specialists, on contract, contract-to-hire or permanent terms.

06Can offshore engineers work on our trading platform?

Often for development and testing on masked data, depending on your regulators and internal policy. Production support and access to client data usually need tighter controls. We set those boundaries with your compliance team first.

related

Often paired with

Projects on Banking & Capital Markets Platforms usually end up touching one of these, so they're worth a look.

sources 4 sources linked last checked 2026-10-20 content fingerprint f3384617
  1. 01Murex: MX.3 integrated capital markets solutionmurex.com ↗
  2. 02Nasdaq press release (SEC filing): Nasdaq completes acquisition of Adenza, 1 November 2023sec.gov ↗
  3. 03Temenos: T24 is now Temenos Transacttemenos.com ↗
  4. 04Temenos: Temenos Infinity digital banking platform (press release, 9 Nov 2022)temenos.com ↗
Reviewed by the Cohash team Product names are trademarks of their owners. how we handle facts and data →
next step

Tell us what you're running. We'll tell you what we'd do first.

A 30-minute working session with a senior engineer. No slides.

useful to bring
  • The platform and the version you're on
  • Where you need to get to, and by when
  • What's custom: rules, plugins, integrations
  • Any audit finding or deadline driving it