Who we are

Six directors. One room.

When you work with 5i, you work with the people whose names are on the door. Each director owns a discipline and personal accountability for the outcome — all six held to the same five principles. An independent advisory board sharpens our thinking on emerging technology and complex delivery.

The story

Built by practitioners, not partners.

Between us, our directors have delivered more than twenty major programmes — from national government platforms to integration-heavy enterprise CRM. We've sat on both sides of the table: as the architects under deadline pressure, and as the team called in when someone else's programme went sideways.

5i Consulting is what we wished existed: a firm small enough that the senior people stay hands-on, and disciplined enough that they're held to a standard with a name. Five i's. No exceptions.

i.
Innovate · emerging tech & AI, applied with judgement
ii.
Integrate · connecting systems, data & teams
iii.
Implement · working software, on time, under audit
iv.
Insight · data turned into decisions
v.
Integrity · honest, accountable delivery
Meet the directors

The six behind 5i.

Extensive, hands-on experience in delivering digital transformation across government and enterprise.

Lead · Technology & Architecture Mahfuz H. Choudhury

Mahfuz H. Choudhury

Founding Director & Chief Technology Officer

5i's technical anchor, owning solution architecture and engineering across the stack. 13+ years building enterprise platforms — from developer to sole technical architect — including the development stream on the ONS Census workforce-management programme and a multi-brand customer portal for a global staffing group. Still writes production code daily, which keeps every architecture decision grounded.

Expertise · Solution architecture, systems integration, secure cloud delivery; deep enterprise CRM & platform engineering Sectors · Central government, financial services, media, automotive Credentials · 9 platform certifications; BSc (Hons) IT, 1st Class, Middlesex University Based · Romford, Essex, UK
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Lead · Business Analysis & TransformationAbdul Hassan Chowdhury

Abdul Hassan Chowdhury

Founding Director — Business Analysis & Transformation

A senior business analyst with 17+ years delivering large-scale IT transformation across EDF, Northumbrian Water, Smart DCC, ScottishPower, CGI and Accenture. Deep expertise in national smart-metering and utility-billing programmes — SMETS1/2, SAP IS-U, Oracle CC&B and Meter Data Management — including regulatory reporting for Smart DCC, which connects over 50 million meters under UK Government licence. Equally fluent in Agile (Scrum/SAFe) and Waterfall delivery.

Expertise · Smart metering (SMETS1/2), SAP IS-U, Oracle CC&B, MDMS, DCC/DUIS, business analysis & process design Sectors · Energy & utilities, government-regulated programmes Credentials · BSc Computer Science (2:1), City, University of London · PRINCE2 Agile® Practitioner · Certified Scrum Product Owner
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Lead · Data & AnalyticsAhsan Sadee

Ahsan Sadee

Founding Director — Data & Analytics

An experienced statistical programmer from clinical development who brings rigorous data discipline to everything we build. Expert in SAS and regulated data standards (CDISC SDTM/ADaM), with a career at Simbec-Orion and Shafi Consultancy producing analysis-ready datasets and quality-controlled reporting for EMA and FDA submissions.

Expertise · SAS programming, statistical analysis, CDISC (SDTM/ADaM), data QC & reporting Sectors · Clinical research & life sciences Credentials · MBA International Business, Anglia Ruskin University · BSc, Shahjalal University of Science & Technology
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Lead · Finance & CommercialMd Yahyea Rezwan Karim

Md Yahyea Rezwan Karim

Founding Director — Finance & Commercial

A part-qualified (ACCA) finance professional with 6+ years across the charity, commercial and practice sectors — currently Finance Business Partner at Action Against Hunger UK. He keeps our programme commercials honest: financial control, budgeting and management reporting, including multi-entity and multi-currency accounting.

Expertise · Financial control, budgeting & forecasting, management reporting, multi-currency accounting Sectors · Charity / NGO, commercial, professional practice Credentials · Part-qualified ACCA · MSc Marketing, London South Bank University · BA (Hons) Applied Accounting, Anglia Ruskin University
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Lead · Operations & Project DeliveryMahfuz Ur Rahman

Mahfuz Ur Rahman

Founding Director — Operations & Project Delivery
LinkedIn URL to be added.

A commercially focused operations and project leader with senior experience at Tesco — one of the UK's largest retailers — across Property Project Manager, Operations Manager and Store Manager roles. Brings large-scale operational delivery, property project management and process improvement: coordinating cross-functional teams, managing budgets, and landing projects on time and in scope without losing focus on customer experience or compliance.

Expertise · Property project delivery, operational transformation, retail leadership, stakeholder management, performance optimisation, process improvement Sectors · Retail operations, business management, property & real estate Credentials · BA Business Management, University of Sunderland · Retail Store Management qualification · Retail Leadership & Operational Excellence · Health, Safety & Regulatory Compliance certification
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Lead · Bangladesh & Government RelationsMd Samil Ahmed Choudhury

Md Samil Ahmed Choudhury

Founding Director — Bangladesh Operations & Government Relations

A Sylhet-based businessman and government contractor with deep commercial and public-sector relationships across Bangladesh. Holds contracting credentials with the Bangladesh Army, Sylhet City Corporation and Bangladesh Roads & Highways, alongside distribution and retail interests as Managing Director of the Center Point Shopping Complex. Gives 5i genuine local presence, government-contracting know-how and a hands-on approach to delivery on the ground.

Expertise · Government & private-sector contracting, business development, supply chain & distribution, project coordination Sectors · Government & municipal, roads & infrastructure, retail & distribution Based · Sylhet, Bangladesh
6
Directors on the door
80+
Years combined delivery
2
Continents, one standard
CMU
Advisor from Carnegie Mellon
Board of Advisors

Independent counsel, deeper reach.

Alongside our directors, 5i is guided by an advisory board of senior academics and industry practitioners whose independent judgement sharpens our thinking on emerging technology, applied AI and complex delivery — without ever compromising accountability at the operating level.

i.
Technical rigourIndependent review of critical architecture and AI choices.
ii.
Applied researchAccess to the latest thinking in AI, verification and automated reasoning.
iii.
Sector reachNetworks across academia, industry and government that broaden our perspective.
Advisor · AI & Automated ReasoningSC

Dr Md Solimul Chowdhury

Advisor — Artificial Intelligence & Automated Reasoning
Photo to be added.

A postdoctoral research associate at Carnegie Mellon University's School of Computer Science, Solimul is a specialist in automated reasoning, SAT solving and the formal verification of machine-learning systems — work recognised with multiple awards in international SAT competitions. Advises 5i on applied AI, technical rigour and the safe adoption of intelligent systems in government and enterprise programmes.

Expertise · Automated reasoning, SAT solving, applied AI, formal verification of ML systems, neural-symbolic integration Credentials · Postdoctoral Research Associate, Carnegie Mellon University · PhD Computing Science, University of Alberta · MSc Computing Science, University of Alberta · BSc Computer Science & IT, Islamic University of Technology Based · Pittsburgh, USA
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Work with us

Senior people. Personal accountability.

That's the whole proposition. Whether you're scoping a new programme, second-guessing an in-flight one, or looking for the kind of senior counsel our advisory board provides — the directors reply within two working days.

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London · Sylhet · info@5iconsulting.io