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Selected work

Shipped, running, and measured.

Four engineering case studies with the numbers behind them, plus 37 interface designs across eight industries. Client names are withheld by agreement — the results are not, and we'll walk you through any of them live.

$2.4M 3.2M 99.9%
Good morning Your consult

50+

Products shipped

13

Engineering disciplines

99.9%

Uptime we hold to

24/7

Support coverage

$2.4M 3.2M 99.9%

3.2M+

Payments / month

120ms

Median settle time

Fintech 2024 14 weeks

Real-time payments platform

A PCI-compliant transaction engine processing thousands of payments per minute.

React Node.js PostgreSQL AWS
3.2M+ transactions / month

The problem

Payments were settling through a batch job that ran four times a day. Merchants saw balances that were hours stale, disputes were reconciled by hand from spreadsheets, and the existing system had no path to the transaction volume the business had already sold.

What we did

We rebuilt settlement as an event-driven ledger with idempotent handlers, so a retried or duplicated message can never double-charge. Reconciliation runs continuously against the processor rather than nightly, and the merchant dashboard reads from a projection updated in real time.

The result

Median settlement dropped from hours to 120 milliseconds. Manual reconciliation went from a daily task to an exception queue, and the platform now clears over three million payments a month on infrastructure that costs less than the system it replaced.

Worth knowing

  • Idempotent event ledger — no duplicate transactions since launch
  • Continuous reconciliation replaced a manual daily process
  • PCI DSS scope reduced by removing card data from application servers

Services used

Good morning Your consult

4.9★

App store rating

60k+

Consults booked

Healthcare 2024 12 weeks

Telehealth mobile app

HIPAA-ready iOS & Android app connecting patients with clinicians in seconds.

React Native WebRTC FHIR GCP
4.9★ average rating

The problem

Patients were booking video consultations through a desktop portal that failed on mobile browsers. Call quality collapsed on cellular connections, and clinician notes lived outside the medical record, so somebody re-typed them afterwards.

What we did

Native iOS and Android apps with WebRTC tuned for lossy networks — adaptive bitrate, audio-only fallback, and reconnection that keeps the consultation alive through a signal drop. Notes write straight into the record over FHIR, and everything sensitive stays encrypted end to end.

The result

Sixty thousand consultations booked in the first year at a 4.9-star average across both stores. Clinicians stopped duplicating notes, and completed-call rates on cellular rose sharply once reconnection was handled properly.

Worth knowing

  • Calls survive network drops without ending the consultation
  • Clinical notes written directly to the medical record over FHIR
  • HIPAA-aligned: encrypted transport and storage, full audit trail

Services used

10,248 98.7%

10k+

Devices online

98.7%

Fleet uptime

IoT 2023 16 weeks

Connected fleet dashboard

Embedded firmware plus a live cloud dashboard tracking 10k+ devices in the field.

C / RTOS MQTT Go TimescaleDB
10,000+ devices online

The problem

Ten thousand devices were deployed with no remote update path. Firmware fixes meant a site visit, faults were discovered when a customer called, and the only record of what was running where was a spreadsheet.

What we did

New RTOS firmware with signed A/B updates and automatic rollback, so a bad image can't brick a unit. Telemetry buffers locally through connectivity gaps and drains over MQTT when signal returns. A Go service ingests it into a time-series store behind an operations dashboard.

The result

Fleet uptime settled at 98.7% with zero bricked units across staged rollouts. Firmware releases go out over the air in cohorts instead of by van, and faults now surface on a dashboard before the customer notices.

Worth knowing

  • Signed A/B over-the-air updates with automatic rollback
  • Store-and-forward telemetry survives long connectivity gaps
  • Truck rolls for firmware fixes eliminated

Services used

92%

Less manual review

8s

Avg. doc turnaround

AI 2025 10 weeks

Document intelligence engine

An LLM pipeline that extracts, classifies, and routes documents automatically.

Python LLMs Vector DB Kubernetes
92% less manual review

The problem

A team of reviewers was reading every inbound document to classify it and pull out a handful of fields. Throughput capped at whatever the team could process in a day, and an earlier AI prototype had stalled because nobody could show it was accurate enough to trust.

What we did

A graded evaluation set came first, so quality was a number before anything shipped. Extraction runs through a retrieval pipeline with schema-validated output and per-field confidence. Anything below threshold routes to a human instead of guessing, and every call is logged with its cost.

The result

Ninety-two percent of documents now clear without human review, averaging eight seconds each. Reviewers handle the genuine edge cases, accuracy is tracked continuously against the evaluation set, and per-document cost is visible on a dashboard.

Worth knowing

  • Evaluation suite and measured baseline before launch
  • Low-confidence cases routed to a human, never silently guessed
  • Per-document cost and accuracy tracked on a live dashboard

Services used

Design showcase

Interfaces we've put in front of users

37 website designs across 8 industries. Filter by sector to see how the same engineering standards adapt to very different audiences.

Car repair service website with a booking-led hero and services strip
Automotive
Motorcycle dealership website with a featured model and price callout
Automotive
Performance auto parts store homepage with a dark product hero
Automotive
Auto repair workshop website with a services overview grid
Automotive
Skincare brand homepage with an editorial hero and product carousel
Retail
Construction company website with a bold headline and about section
Construction
Construction services website with a standards-led hero and trade imagery
Construction
Structural engineering website with a site photography hero
Construction
Heavy machinery contractor website with an equipment hero
Construction
Marketing consultancy website with a cut-out portrait hero
Agency
Business consultancy website with a team-led hero and red accent
Agency
Architecture studio website with full-bleed building photography
Construction
Financial advisory website with a teal hero and services grid
Agency
Multi-category marketplace homepage built from deal tiles
Retail
Womenswear store homepage with a lookbook hero
Retail
Fashion designer portfolio site with an editorial layout
Retail
Footwear store homepage with an angled product spotlight
Retail
Technology studio website with an illustrated hero
Agency
Creative agency website with a high-contrast dark hero
Agency
Creative agency website with an animated green gradient hero
Agency
Creative studio website with a dark hero and results band
Agency
E-learning platform homepage with a live class preview
Education
Online course platform with a skills-led hero and course cards
Education
Education platform homepage with an instructor spotlight
Education
Online study platform with enrolment statistics in the hero
Education
Business finance website with a dark hero and mobile app preview
Finance
Online payments product site with app screens and trust badges
Finance
Investment planning website with tiered return cards
Finance
Payment gateway website with an isometric illustration hero
Finance
Healthcare provider website with an appointment-led hero
Healthcare
Medical practice website with an illustrated hero and trust stats
Healthcare
Optical and eyewear clinic website with a photographic hero
Healthcare
Dental practice website with an inline appointment form
Healthcare
Property search portal with a filter bar and listing results
Real estate
Luxury property portal with a search overlay on estate photography
Real estate
Estate agency website with a search-led hero
Real estate
Residential design and build studio website with a muted hero
Real estate

Screens are shown without client branding where an agreement requires it. Ask us for a walkthrough of any of them.

Why there are no client logos here

Project names and client details are anonymized — confidentiality is part of every engagement we take on, including yours. On a call we can walk through architecture, decisions and numbers in detail, and several clients are happy to speak to prospective ones directly.

Ask for a walkthrough

Client stories

Teams that trusted us, and shipped

  • Zeetek shipped our MVP in six weeks and it just worked. They think like founders, not contractors.
    AK Ayesha Khan CEO, Fintrail
  • The most reliable engineering partner we've had. Clean code, clear communication, zero drama.
    DR Daniel Reyes CTO, Meridian Health
  • Our load times dropped and conversions climbed. They understand performance at a level most agencies don't.
    SM Sana Malik Head of Product, Loop
  • They took a vague hardware idea and delivered working firmware plus a dashboard our field team actually enjoys using.
    TL Tomas Lindqvist Operations Director, Nordfleet
  • We came for one project and kept them on retainer. They've become the engineering team we never had to hire.
    PR Priya Raman Founder, Ledgerly

Your project

Want results like these?

Tell us what you're building. You'll get a scope, a number, and an honest opinion from the engineer who'd lead it — within one business day.

Prefer email? support@zeetek.net