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Seven disciplines, each scoped to your objectives, documented in writing and delivered against agreed milestones. Timeline and cost depend on scope; we confirm both before work starts.

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01 / 07 · web · next.js

Web Applications

Custom web applications and business websites built for speed, SEO, and easy maintenance — from marketing sites to full internal tools. We build customer portals, internal tools, marketplaces and dashboards.

Discuss This Service (Web Applications)

Key deliverables

  • Responsive website or web app, built for speed and search
  • Admin area so your team can update content
  • Logins, roles and permissions where you need them
  • Hosting, domain and HTTPS set up
  • Search basics: titles, sitemap and page speed
  • Source code and every account handed to you

Technologies

  • Next.js
  • React
  • TypeScript
  • Tailwind CSS
  • Node.js
  • Express
  • MongoDB

02 / 07 · android · ios

Mobile Applications

Mobile apps built the way your project needs — cross-platform apps with React Native, native Android apps in Kotlin, or installable progressive web apps (PWAs) that run on any phone from a single codebase. Offline sync, push notifications, payments and store submission are handled for you.

Discuss This Service (Mobile Applications)

Key deliverables

  • One app for Android and iPhone, or a native Android app
  • Designs of the key screens before the build
  • Push notifications and offline use where needed
  • Connection to your backend, or one we build
  • Google Play and App Store submission
  • Source code and store listings in your name

Technologies

  • React Native
  • Flutter
  • Expo
  • Kotlin
  • Firebase
  • PWA
  • TypeScript

03 / 07 · saas · multi-tenant

SaaS Products

Subscription software that serves many customers from one platform, with billing, team roles and analytics in place from the first release. We begin with discovery, so the first version solves one problem well.

Discuss This Service (SaaS Products)

Key deliverables

  • Product discovery and a first-release scope
  • Multi-tenant architecture that keeps each customer's data separate
  • Subscription billing and invoices through Stripe
  • Role-based access for teams and administrators
  • Usage analytics and an admin dashboard
  • Source code and every account handed to you

Technologies

  • Next.js
  • Node.js
  • PostgreSQL
  • Stripe
  • Redis
  • AWS

04 / 07 · ai · workflows

AI and Automation

Custom automation that connects your existing tools and APIs, cutting out repetitive manual work across your business. Where it helps, we add AI assistants that answer from your own documents and extract data from files, always with a human review step.

Discuss This Service (AI and Automation)

Key deliverables

  • A review of the manual work worth automating
  • AI assistants and document extraction from your own files
  • Connections between the tools you already use
  • Scheduled jobs, webhooks, reports and notifications
  • Alerts when something fails, with human review where it matters
  • A written guide to how it all works

Technologies

  • Python
  • OpenAI
  • FastAPI
  • pgvector
  • Node.js
  • Webhooks
  • REST APIs

05 / 07 · rest · realtime

Backend Systems and APIs

Secure, well-structured backend systems and APIs — authentication, role-based access, webhooks, and real-time features included. Every API is documented with OpenAPI and load-tested before launch.

Discuss This Service (Backend Systems and APIs)

Key deliverables

  • REST and GraphQL API design, documented with OpenAPI
  • Database design in PostgreSQL or MongoDB
  • Authentication, role-based access and audit trails
  • Payments, ERP, webhooks and third-party integrations
  • Real-time updates over WebSockets, and background queues
  • Automated and load tests for the core logic

Technologies

  • Node.js
  • Express
  • NestJS
  • GraphQL
  • PostgreSQL
  • MongoDB
  • Redis
  • WebSockets

06 / 07 · ci/cd · cloud

DevOps and Cloud

CI/CD pipelines and cloud deployment so your product ships reliably and scales without manual, error-prone releases. Infrastructure is defined as code, monitored after launch and reviewed for cost.

Discuss This Service (DevOps and Cloud)

Key deliverables

  • Cloud architecture, migration and cost optimisation
  • A pipeline that tests and deploys every change
  • Hosting on AWS, Azure, Google Cloud, Vercel or Render, defined as code
  • Docker containers and Kubernetes for consistent environments
  • Separate staging and production, with monitoring
  • Backups, HTTPS and safely stored secrets
  • Handover notes so your team can run it

Technologies

  • AWS
  • Azure
  • Google Cloud
  • Docker
  • Kubernetes
  • Terraform
  • GitHub Actions
  • Vercel
  • Render

07 / 07 · architecture

Software Consulting

Technical strategy and system design for teams that need an outside expert to plan architecture before committing to a build. You receive a written plan you keep, whoever builds it.

Discuss This Service (Software Consulting)

Key deliverables

  • A review of your idea, product or existing code
  • Recommended architecture and tech stack
  • A first-version scope: what to build first
  • Risks, estimates and open questions
  • A written technical plan you keep
  • The option to have us build it afterwards

Technologies

  • System Design

Not on the list? Tell us.

We take on any kind of software development. Describe what you need and we will tell you how we would build it.

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Engagement models

Structured to suit how you work.

Fixed-scope project

A defined outcome at a fixed price, with scope, timeline and cost agreed in writing before work starts, paid in milestones such as 30% / 40% / 30%.

Best for new builds and MVPs

Most flexible

Dedicated team

A cross-functional CodTK team working on your roadmap, with a weekly demo and a shared channel for day-to-day decisions.

Best for ongoing product development

Support and retainer

Monitoring, fixes, security updates and planned improvements on a monthly retainer. The first month of bug fixes after launch is free.

Best for live, business-critical systems

Technical consulting

An outside engineer's view before you commit: what to build first, how to build it and what could go wrong, as a written plan.

Best before a big build

See consulting

Delivery standard

What every build ships with.

Lighthouse targets we build to

  • Performance: target 95
  • Accessibility: target 100
  • Best practices: target 100
  • SEO: target 100

Targets set for every launch, measured on the mobile profile.

Every build ships with

  • Tests in CI
  • Peer code review
  • Monitoring and runbooks
  • Documentation and handover
  • Security audits
  • WCAG 2.1 AA accessibility
Handover repository
your-product/
├── apps/
│   ├── web/       # front end
│   └── api/       # backend and API
├── infra/
│   └── terraform/ # infra as code
├── .github/
│   └── workflows/ # test, build, deploy
├── tests/
└── docs/          # runbooks, handover

React, Next.js, Node.js, MongoDB, PostgreSQL, Python, Flutter, Docker, Kubernetes, AWS, Azure, Google Cloud, Terraform, OpenAI, Stripe

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