APPIAH & COMPANYStart a project->

We build the apps,
and keep them
running.

An elite engineering and prototyping firm. We turn ideas and designs into production-ready software — and operate the critical systems the world depends on.

Start a project->View capabilities->

48 HRS

Prototype to demo

99.98%

Uptime maintained

18+

Systems in production

Who we work with

[ TWO TIERS ]

01Startups & Scaleups

From design file to production in days, not quarters.

We turn your Figma, your napkin sketch, or your half-finished repo into shipped, production-ready software. Fixed scope, senior engineers, zero hand-holding.

  • Rapid prototyping & MVPs
  • Design-to-code implementation
  • Full-stack product build-out
  • Zero-to-one launch engineering
02Enterprise & Fortune 500

The systems your business runs on, operated with precision.

Legacy maintenance, site reliability, and complex migrations for organizations where downtime is measured in dollars per second. We integrate, we modernize, we stay on call.

  • Legacy maintenance & modernization
  • Site reliability engineering (SRE)
  • Complex system migrations
  • AI integration into core workflows

[ CAPABILITIES MATRIX ]

Four disciplines. One standard.

01

Software Development

Web, mobile, and backend systems built by senior engineers.

TypeScript, React, Go, and Rust. We ship maintainable, well-tested code with the architecture to grow into — no throwaway prototypes unless that is exactly what you asked for.

  • TypeScript
  • React
  • Go
  • Rust
02

AI & Machine Learning

Applied AI wired into products, not slide decks.

LLM integration, RAG pipelines, evaluation harnesses, and inference infrastructure. We build AI features that survive contact with real users and real data.

  • LLMs
  • RAG
  • Evals
  • Inference
03

Cloud & Data Architecture

Infrastructure and data platforms designed to scale and priced to survive.

Multi-region AWS and GCP, infrastructure-as-code, data pipelines, and cost models that don't surprise you in month three. We design for the load you'll have, not the load you fear.

  • AWS
  • GCP
  • Terraform
  • Kubernetes
  • Data Engineering
04

Site Reliability

On-call, observability, and the boring work that keeps you up.

SLOs, incident response, and observability pipelines. We treat reliability as a feature and operate your systems with the same discipline we build them.

  • Observability
  • SLOs
  • Incident Response
  • CI/CD

[ SELECTED WORK ]

Proof, not promises.

01
Fintech Scaleup/Payments Infrastructure

Cut settlement latency from minutes to milliseconds.

220ms

p99 settlement, down from 4 minutes — zero reconciliation drift in 14 months.

Problem

A batch-based ledger buckled under 40× growth. Reconciliation ran hourly, payouts lagged, and the on-call team was drowning in manual fixes.

Solution

We re-architected the core to an event-sourced ledger on Kafka, added idempotent settlement workers, and shipped an observability layer with per-transaction tracing.

02
Fortune 500 Retailer/Legacy Modernization

Migrated a 12-year monolith with zero downtime.

0

minutes of downtime across the cutover — deploy time fell from 2 days to 9 minutes.

Problem

A revenue-critical Java monolith blocked every release. Deploys took a weekend, and a rewrite had already failed once under a prior vendor.

Solution

We ran a strangler-fig migration — carving out services behind a routing layer, backfilling test coverage, and cutting traffic over incrementally with automated rollback gates.

03
Seed-Stage AI Startup/Applied Machine Learning

Shipped a production RAG pipeline in six weeks.

94%

answer accuracy on the eval set — up from 61%, with latency held under 800ms.

Problem

A promising demo hallucinated on real customer data and had no evaluation harness. Investors wanted a defensible product, not a prompt.

Solution

We built a retrieval pipeline with hybrid search, a golden-set eval harness wired into CI, and an inference layer that fell back gracefully under load.

[ START A PROJECT // OPEN A CHANNEL ]

Tell us what you're building.

No sales funnel. No discovery-call gauntlet. A principal engineer reads every brief and replies directly, usually within one business day.

General
hello@appiah.company
New business
build@appiah.company
Incidents
sre@appiah.company
Engagement

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