Software Development & Quality Engineering

We build software and make sure it works.

Pemystack builds production software with quality engineered in from the start. Full-stack applications, AI products, automation frameworks, and QA transformations for product teams that ship with confidence.

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10+ Years in quality engineering
3 Client engagements delivered
12+ Automation & AI tools built
80% Fewer post-release defects
About Pemystack

A decade of engineering quality outcomes for product teams.

Pemystack brings over ten years of shipping production software, building automation infrastructure, and engineering quality into product teams across Kenya, Switzerland, and Germany. The practice combines hands-on engineering with the strategic work needed to make quality a team-wide capability, not a single person's job.

We are most effective where quality is under-invested: teams that ship fast but pay for it in regressions, test suites that are slow and ignored, or codebases where QA still means a bottleneck before release. We assess the system and build the infrastructure and culture to change that.

Alongside consulting work, we build our own software: AI-powered platforms, developer tools, and operational products, each one held to the same engineering standard we apply for clients.

  • Full-Stack Development
  • AI Product Engineering
  • MCP Tooling
  • Test Automation
  • Quality Assistance
  • CI/CD Integration
  • Risk-Based Testing
  • LegalTech
  • FinTech
  • EdTech

Services

  • Software Development
  • Quality Assurance
  • AI Automation
  • Engineering Coaching

Industries

  • LegalTech
  • FinTech
  • EdTech
  • Enterprise
kennedy@pemystack.com Call LinkedIn →
Services

Development, quality, automation, or all three

Engagements can be pure software development, pure QA, pure automation, or a full-service partnership. Scoped around what your team actually needs.

Software Development

We build production software from scratch, with quality baked in from the first commit. Web apps, APIs, payment integrations, and internal tools, developed with the same engineering rigour we apply as quality engineers.

  • Full-stack web and mobile applications (Next.js, React, NestJS, FastAPI)
  • API design, backend architecture, and database modelling (PostgreSQL, SQLite, REST)
  • Payment integrations (M-Pesa, IntaSend, Stripe)
  • CI/CD pipelines and quality gates built in from day one (GitHub Actions, Playwright, pytest)

Quality Assurance

Strategy, transformation, and automation from a single engagement. We assess quality maturity, design the test architecture, and build the automation layer across mobile, web, and API surfaces.

  • Quality maturity assessment and strategy
  • Android, web, and API test automation (Kaspresso, Playwright, Cypress)
  • Quality Assistance model implementation
  • CI/CD pipeline integration and quality gates

AI Automation

LLM-powered tooling that augments quality and engineering workflows, from intelligent PR review agents and automated test generation to natural language documentation pipelines.

  • LLM-powered PR regression checking
  • AI-assisted test documentation and acceptance criteria
  • Testing non-deterministic AI features
  • MCP-based workflow integrations (Slack, Notion, custom tools)

Engineering Coaching

Embedding a quality culture through workshops, hands-on coaching, and internal documentation that outlasts any individual engagement.

  • Shift-left testing workshops
  • Developer quality mentorship
  • Test best-practices documentation
  • Release management and readiness frameworks
Track Record

Proven impact across product companies

Principal Consultant Pemystack

Independent consultancy delivering across three disciplines: full-stack software development, quality engineering, and AI automation. Builds production applications end-to-end, embeds scalable QA systems into engineering teams, and deploys AI-powered tools that automate operational workflows for clients in Kenya and beyond.

Software Development
Quality Assurance
AI Automation
Quality Engineering Lead EdTech Platform · Kenya

Transformed quality engineering from a release bottleneck into a shared team capability across a mission-driven platform serving hundreds of thousands of users. Pioneered a Quality Assistance model, built the full cross-platform automation strategy spanning Android, web, and API surfaces, and embedded continuous testing throughout the CI/CD pipeline.

80% fewer post-release defects
70% faster test execution
20% faster time-to-market
40% YoY efficiency gain
QA Consultancy Restaurant SaaS · Switzerland

Redesigned QA methodology end-to-end for a scaling SaaS product, lifting coverage, cutting cycle times, and rebuilding release confidence from the ground up. Identified and led adoption of new testing tooling that fundamentally changed how the team measured and acted on quality signals.

40% shorter test cycles
60% more test coverage
60% fewer post-deploy defects
Test Automation Engineering Enterprise Financial Systems

Built scalable automation for data-intensive financial applications, pairing structured manual testing with SQL-based validation at depth. Drove regression strategy under high-load conditions and worked closely with business and technical stakeholders to keep complex financial workflows reliable, auditable, and production-safe.

60% increase in test coverage
Technical Toolkit

Full-stack quality across every platform and layer

Languages

  • Kotlin
  • TypeScript
  • JavaScript
  • SQL
  • Python

Frameworks

  • React
  • Next.js
  • FastAPI
  • NestJS
  • Playwright

Infrastructure

  • GitHub Actions
  • Docker
  • PostgreSQL
  • Sentry
  • Vercel

Platforms

  • Android Studio
  • IntelliJ IDEA
  • VS Code
  • Xcode
  • AWS

AI

  • Claude API
  • Groq
  • Ollama
  • FastMCP
  • OpenAI
Products & Projects

Software development, quality assurance, and automation

Live products and tools built end-to-end, covering the full range of what Pemystack does.

Live Product Engineering · LegalTech · Kenya

CaseLens

A production LegalTech SaaS for Kenyan advocates. Supports three practice modes (prosecution, defence, and civil), each generating AI-drafted legal documents anchored in Kenyan statute (ODPP format, CPC, Civil Procedure Rules).

Full-stack Next.js App Router, PostgreSQL via Neon + Drizzle ORM, AES-256-GCM encryption at rest, M-Pesa and IntaSend payments, Tesseract.js OCR, JWT auth with email verification, and Vercel Cron for subscription lifecycle and demo resets.

Next.js Claude / Groq / OpenAI Neon + Drizzle M-Pesa + IntaSend Tesseract.js Playwright + Vitest
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CaseLens: Case intelligence built for Kenyan Justice System
Live Applied AI · FinTech · Kenya

Akili Finance

Akili Finance: Your portfolio data, instantly intelligent

AI-powered assistant for Kenyan SACCOs. Staff query members, loans, and financials in English or Swahili. PAR analysis, risk scoring, SASRA returns, and IFRS 9 ECL reports, all from live data via 14 MCP tools with five-tier RBAC.

FastMCP FastAPI React + Vite Groq (Llama 4) Neon
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Live Applied AI · EdTech · Kenya

Skooli Assistant

Skooli: Run your school with AI

AI management platform for Kenyan schools. WhatsApp-driven attendance roll call, parent self-service portal with M-Pesa fee payments, AI analytics chat against live school data, and a principal admin panel, all on phones staff already use.

FastMCP FastAPI React + Vite WhatsApp API M-Pesa
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Delivered Quality Engineering · Strategy · EdTech

Quality Assistance Model

Replaced a siloed QA gatekeeping model with shared quality ownership across the engineering team. Rebalanced automation around risk and embedded continuous testing into CI/CD, eliminating late-stage approval bottlenecks.

80% fewer post-release defects · 70% faster test execution
Kaspresso Playwright GitHub Actions Claude API
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Get in Touch

Let’s build quality into your engineering culture.

Whether you need a quality strategy assessment, an automation build, or a long-term engineering partnership, reach out and we can talk through what your team needs.

Email kennedy@pemystack.com Phone Call LinkedIn pemy GitHub leader-ke
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