Payments Specialists.
Not Generalists.
Proximo Consultancy was founded by payments professionals with deep, hands-on experience across BASE24, BASE24-EPS, and the broader payments technology stack. We exist to provide the kind of focused, independent expertise that generalist consultancies simply cannot offer.
Our Mission
Developing Trust Through Expertise
Our mission is to be the most trusted independent payments consultancy for organisations navigating complex transformation programmes. We achieve that by combining deep technical expertise — in authorisation switching, HSM key management, ISO 8583 message flows, and scheme certification — with genuine delivery experience.
The payments advisory market is dominated by firms with commercial relationships with the vendors they recommend. Proximo is different. We have no partnership tiers with ACI Worldwide, Finastra, FIS, or any other platform vendor. Our only commercial interest is in delivering the right outcome for your programme.
What Drives Us
Payments infrastructure is a specialist discipline — it deserves specialist advisors with hands-on BASE24 experience.
Vendor independence is non-negotiable. Partnership tiers and referral fees compromise advice.
Delivery experience inside authorisation platforms matters more than theoretical knowledge of them.
Trust is earned through programme outcomes, not through polished presentations.
Our Values
What We Stand For
Vendor Independence
We have no commercial relationships with ACI Worldwide, Finastra, FIS, Temenos, or any other payments technology vendor. Every recommendation we make is driven solely by what is right for your programme — not by referral fees or partnership tiers.
Technical Depth
Our consultants have spent careers inside payments infrastructure — configuring IDF parameter tables, managing HSM key ceremonies, designing ISO 8583 message flows, and running Visa/Mastercard scheme certification programmes. We advise on things we have done ourselves.
Delivery Focus
We do not produce reports that gather dust. We embed with your programme teams, drive delivery through every phase — from discovery and architecture through to cutover and hypercare — and stay accountable for outcomes.
Global Reach
We have supported BASE24 and payments transformation programmes across EMEA, Asia-Pacific, and the Americas — bringing breadth of cross-market experience to every engagement, wherever your programme is based.
Our Expertise
Built on a Foundation of BASE24 Knowledge
Everything we do is built on a foundation of deep BASE24 and BASE24-EPS expertise. Our consultants have configured IDF parameter tables, managed HSM key ceremonies, designed ISO 8583 message flows, and run Visa and Mastercard scheme certification programmes.
On top of that foundation, we bring expertise in programme delivery, regulatory compliance (PCI-DSS 4.0, PSD3, ISO 20022), vendor selection, and payments strategy — giving you a single advisory partner across the full transformation lifecycle.
Our Story
Built by Practitioners, for the Industry
Proximo Consultancy established by senior payments professionals with a shared conviction: the industry needed a genuinely independent specialist advisory firm — one with deep BASE24 and payments infrastructure expertise, and no vendor ties.
Delivered initial BASE24 environment assessments and migration advisory engagements for clients across Europe and Asia-Pacific — establishing our methodology for authorisation platform assessment and parameter migration planning.
Extended delivery capability across EMEA, APAC, and the Americas — supporting tier-1 banks, regional processors, and national payment switches with BASE24-EPS migration programmes and regulatory compliance advisory.
A trusted independent partner for organisations navigating complex payments transformation — with a growing portfolio of BASE24-EPS migration programmes, PCI-DSS 4.0 remediation engagements, and ISO 20022 migration advisory.
Ready to Work With Us?
Whether you are planning a BASE24-EPS migration, navigating a PCI-DSS 4.0 remediation, or need independent advisory on a platform investment decision — we would welcome a conversation.