Hey there — I'm a HealthTech Engineer

Rexford
Amponsah.

Medical laboratory scientist by profession, software engineer by practice. I design Health Management Systems and wire laboratory analyzers directly into them — so results move from the instrument to the patient record without anyone retyping a number.

Based in Ghanarexamponsahdeparakletos@gmail.com

See the work Start a project

Rexford Amponsah Yaw — HealthTech Engineer

Available for work

MLS · Engineer

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5 facilities · 2 HMS deployments

About

A lab scientist
who writes code.

I'm a medical laboratory scientist who builds the software that runs hospitals. I design and deploy Health Management Systems, and I integrate laboratory analyzers directly into those systems — so results move from the instrument to the patient record without a human retyping a number. I sit between the clinicians, the lab bench, and the code, and I speak all three languages.

The hospitals I work with deal with real patients, real samples and real deadlines. My job is to remove the friction between them — to make sure a result from an analyzer reaches the doctor who ordered it, quickly and without distortion. I take that seriously because I used to be the one running the samples.

Hospitals integrated

Full HMS deployments

Years engineering

Years in the lab

Selected Work

Real systems,
running in real hospitals.

Four deployed systems, six facilities across Ghana. Each one shipped with real patients on the other side.

hms.uenr.edu.gh

HMS2025

UENR Health Information Management System

University of Energy & Natural Resources · Sunyani

A full Health Information Management System built for UENR's Health Services Directorate — patient registration, electronic records, pharmacy, billing and reporting designed around how a university health service actually runs.

End-to-end patient journey from OPD to pharmacy
Role-based access for doctors, nurses, pharmacists and records
Reporting dashboards for clinic administrators
Secure authentication with session management

HMSEMRRBACReporting

Case study on request

banhart.hms.local

HIS2026

Banhart Specialist Hospital Management System

Banhart Specialist Hospital · Kumasi · Sunyani · Kenyasi

A multi-branch hospital information system serving Banhart's Kumasi, Sunyani and Kenyasi locations. One codebase, three live deployments, shared patient identity across branches — covering every department from OPD to radiology to the theatre.

15+ departments: OPD, IPD, ICU, theatre, pharmacy, radiology and more
Unified patient record across three physical branches
Patient portal for secure self-service access
Designed for low-bandwidth clinical environments

HISMulti-branchBillingPatient Portal

Case study on request

puremed.screening.local

Screening2026

PureMed Diagnostics — Medical Screening System

PureMed Diagnostics

A multi-role medical fitness screening platform built for PureMed Diagnostics. Patients move through six clinical stations — Vitals, ENT, Eye, Laboratory, X-Ray and Physical Exam — each handled by the relevant clinician, with a final Fit / Fit with Conditions / Unfit determination by the examining doctor.

Six-module screening workflow: Vitals → ENT → Eye → Lab → X-Ray → Physical Exam
Role-based stations for receptionist, nurse and doctor
Real-time per-patient progress tracking with screening code
NHIS insurance and Ghana Card integration at registration
Dashboard analytics: fitness distribution, 30-day screening volume

Next.jsTypeScriptPostgreSQLRBACMulti-role Workflow

Case study on request

lablink.exe

LabLink desktop application showing Haematology and Chemistry modules

Lab Integration2023 — present

LabLink — Analyzer → HMS Bridge

Banhart (3 branches) · Pisgah Advanced Medical Centre

LabLink is a desktop application I built to wire laboratory analyzers directly into each hospital's HMS. Chemistry and haematology results flow from the instrument to the patient record automatically — no manual entry, no transcription errors. Deployed across four hospitals in Ghana.

Haematology (FBC) and Chemistry analyzer modules
ASTM E1394 and HL7 v2 messaging support
Bi-directional: sends orders to the analyzer, receives results
Results auto-attach to the correct lab request and patient

HL7 v2ASTM E1394Serial / TCPDesktop App

Case study on request

Services

What I actually
deliver.

Not a menu of buzzwords. These are the four things I do end-to-end for hospitals and labs — and the four things I do well.

Hospital Management Systems

Design and build full HIS/HMS platforms — patient registration, EMR, OPD, IPD, pharmacy, billing and reporting — shaped around how your facility actually runs, not a generic template.

Laboratory Equipment Integration

Interface chemistry, hematology and immunoassay analyzers directly with your HMS or LIS. Results flow from the instrument to the patient record automatically — with HL7 v2 or ASTM E1394, over serial or TCP.

Clinical Workflow Automation

Audit the paper-and-phone steps between departments and replace them with software that fits the way clinicians and lab staff really work. Less re-entry, fewer errors, faster turnaround.

HMS Migration & Support

Migrate from legacy or paper-based systems to a modern HMS without losing historical data — plus ongoing support, training and incident response once you go live.

Stack

Code, infrastructure,
and healthcare protocols.

Languages & Frameworks

TypeScriptJavaScriptNode.jsNext.jsReactExpressPythonPHP

Data & Infrastructure

PostgreSQLMySQLMongoDBRedisDockerLinuxNginx

Healthcare & Integration

HL7 v2FHIRASTM E1394LOINCLIS / HISSerial / RS-232TCP / IP

HL7 v2FHIRASTM E1394LOINCNext.jsTypeScriptPostgreSQLDockerLinuxNode.js

Process

How clinical
software actually ships.

Hospitals don't have room for half-finished software. My process is built around that reality — ground-level research, careful design, real-world integration, and steady support after go-live.

Discover on the ground

I spend time in the OPD, the lab and the records room. I watch how staff actually move between paper, phones and screens — because the real workflow is never the one on the org chart.

Design around clinicians

I map out data models, role permissions and user journeys with the people who will use them daily — doctors, nurses, pharmacists, lab scientists, cashiers — so nothing in the UI feels like a stranger.

Build & integrate

I build the HMS in-house and wire up the lab analyzers, payment devices and any existing systems. Interfaces are tested against real instruments, not just mocks.

Deploy & support

Go-live is a process, not a day. I train staff, sit with them through the first week, and stay on call after — because in healthcare, downtime is not an option.

Kind Words

Trusted by clinicians
and lab teams.

Rexford understands both sides of the bench. He sat with our lab scientists before writing a single line of code, and the result is a system that just fits how we work.

Lab Manager

Banhart Specialist Hospital

We used to retype every analyzer result into the HMS. Since Rexford wired the machines in, that step is gone — and so are the transcription errors.

Clinical Director

Pisgah Advanced Medical Centre

He builds software the way a good clinician works: carefully, with real respect for the details. Our team trusts him, which is not something I say lightly.

Administrator

University Health Service

Trusted by

Hospitals and clinics
running my software today.

Five facilities across Ghana — from a university health service to a three-branch specialist hospital network.

UENR Health Service

University of Energy & Natural Resources · Sunyani

Banhart Specialist Hospital

Kumasi Branch

Banhart Specialist Hospital

Sunyani Branch

Banhart Specialist Hospital

Kenyasi Branch

Pisgah Advanced Medical Centre

Specialist Outpatient Care

PureMed Diagnostics

Medical Screening Centre

Insights

Field notes from
building clinical software.

Want more? Get in touch →

IntegrationFeb 2026

Why I wire lab analyzers directly into the HMS

Transcription errors are one of the quietest safety risks in a clinical lab. Here's why I stopped trusting the keyboard — and started trusting the instrument.

6 min readRead

StandardsJan 2026

HL7 v2 vs FHIR: what still ships in Ghanaian hospitals

Everyone wants to talk about FHIR. Most of the facilities I work with are still on HL7 v2 — and there's a practical reason for it. A field report from the ground.

8 min readRead

Case StudyDec 2025

One HMS, three branches: lessons from a multi-site deployment

Deploying the same hospital system across Kumasi, Sunyani and Kenyasi taught me that code is the easy part. The hard part is the humans, the bandwidth and the habits.

10 min readRead

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