Infikey Technologies

United Kingdom desk

Custom software engineering for products that have to last

Products and platforms with engineering you can inspect

Infikey Technologies is a software development company serving organisations in the United Kingdom. We design, build, and modernise web applications, APIs, and internal platforms — from a founder’s first product to a group-wide system that cannot go down on a Friday.

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What Software engineering covers

For United Kingdom organisations, we align delivery with UK data protection expectations and established procurement practice.

Infikey Technologies builds software that finance, operations, and technology leadership can stand behind.

We cover greenfield products, complex integrations, and the controlled modernisation of estates that cannot be paused. Architecture, quality, security, and documentation are part of the delivery, not an afterthought.

What you receive

  • ∞Product discovery and a written delivery plan your sponsors can approve
  • ∞Web applications, customer portals, and operations tools
  • ∞REST and event-driven APIs, integrations, and data contracts
  • ∞Legacy modernisation without a big-bang cutover
  • ∞Automated tests, CI/CD, and documentation your team can run
  • ∞Named engineering lead and a backlog you can inspect weekly

What changes when it works

  • ∞Working software in short increments, not a six-month reveal
  • ∞Architecture a new engineer can read in a week
  • ∞Handover packs that survive staff changes

Software engineering FAQ

Questions buyers ask first.

Do you only build greenfield products? +

No. Infikey builds new products and modernises existing estates. We use strangler patterns, dual-run, and documented cutovers so operations keep moving.

Which stack will you use? +

The one that fits your estate. We are fluent in Laravel, React, Node.js, Python, Java, and .NET, and we will say so if a different stack is cheaper to run.

Can Infikey work with our in-house developers? +

Yes. Many clients keep product ownership in-house and use Infikey as a named squad with a lead who reports into your cadence.

By industry

Software engineering for specific sectors

Media and hospitality

Software Engineering for Media and Hospitality in London

Professional services

Software Engineering for Professional Services in London

Startups and scale-ups

Software Engineering for Startups and Scale-ups in London

Public sector and institutions

Software Engineering for Public Sector and Institutions in London

Energy and utilities

Software Engineering for Energy and Utilities in London

Logistics and mobility

Software Engineering for Logistics and Mobility in London

Insights

Writing on Software engineering

Software Engineering Pricing in the United Kingdom: How to Plan, Compare, and Shortlist Vendors

A practical guide to software engineering pricing in the United Kingdom, covering vendor selection, budgeting,...

Hire Software Engineering in London: How UK Buyers Can Shortlist and Scope the Right Partner

Looking to hire software engineering in London? This guide explains how UK buyers can shortlist vendors, plan...

How to Shortlist a Software Engineering Agency in the United Kingdom: Evaluation, Pricing, and Delivery

Choosing a software engineering agency in the United Kingdom requires a clear approach to vetting, pricing, an...

Free tools

Plan your software engineering project

Free estimate

Custom software cost calculator

Scope custom business software — CRM, ERP, portals, workflow and reporting tools — by users, modules, integrations and hosting. Infikey replies with a costed estimate and delivery plan.

Free estimate

SaaS MVP cost calculator

Scope a SaaS product: MVP or version 1, multi-tenancy, subscription billing, admin, integrations and compliance. Infikey replies with a costed estimate and release plan.

Instant result

Software project timeline estimator

Estimate how many weeks a website, app or software project takes, phase by phase — discovery, design, build, testing and launch — from screens, integrations, complexity and team size.

Instant result

Fixed price vs time & materials calculator

Answer six questions about scope, change, budget and involvement to see whether a fixed-price, time-and-materials or hybrid contract fits your software project — and the risks of each.

Instant result

Sprint capacity & velocity calculator

Work out your scrum team’s capacity in hours and story points for the next sprint, adjusted for holidays and meetings, and how many sprints the remaining backlog will take.

Instant result

SaaS metrics calculator (MRR, churn, LTV, CAC)

Calculate MRR, ARR, customer and revenue churn, LTV, LTV:CAC ratio, CAC payback period and net revenue retention from a few monthly numbers. Free, with formulas shown.

Instant result

Churn rate & retention calculator

Calculate customer churn and retention for any period, convert monthly churn to annual churn correctly, see average customer lifetime and forecast your customer count.

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Customer lifetime value (LTV) calculator

Calculate customer lifetime value for subscription or repeat-purchase businesses, on revenue and gross profit, with a discounted LTV and the most you can afford to pay to acquire a customer.

Instant result

LTV:CAC ratio & CAC payback calculator

Check your unit economics: LTV:CAC ratio, simple and churn-adjusted CAC payback period, and the churn or CAC you need to reach a 3:1 ratio and 12-month payback.

Instant result

Burn rate & runway calculator

Calculate gross and net burn, cash runway in months, the month you run out of cash or break even, and whether your startup is default alive at current growth rates.

Instant result

Net revenue retention (NRR) calculator

Calculate net revenue retention (NRR, also called net dollar retention) and gross revenue retention (GRR) for a month, quarter or year, annualised, with benchmarks.

Instant result

SaaS pricing & freemium conversion calculator

Model SaaS revenue from sign-ups, free-to-paid or trial conversion, three pricing tiers and churn: blended ARPA, MRR forecast, revenue per sign-up and the cost of free users.

Instant result

Build vs buy software calculator

Compare the total cost of a SaaS subscription with building custom software over several years, with per-user fees, price rises, user growth, maintenance and hosting, and find the break-even year.

Instant result

Technical debt cost calculator

Estimate the yearly cost of technical debt from developer time lost to workarounds and bug fixing, plus production incidents, and see the payback of a refactoring or modernisation project.

Keep exploring

Related Infikey services

∞ Website development Corporate websites, campaign pages, and content systems — designed, built, and handed over so your team can keep publishing. Unlock → ∞ Mobile app development Native and cross-platform mobile products — from first release to store operations and the next version. Unlock → ∞ Cloud and infrastructure Cloud architecture, migration, and managed platforms across major hyperscalers. Unlock → ∞ Cybersecurity Application security, identity, and pragmatic controls aligned to how your teams actually ship. Unlock → ∞ AI AI inside real products and processes — not slideware, and not a chatbot bolted on for the pitch. Unlock →

Ready to brief software engineering?

Tell us the problem in the United Kingdom. We will say if Infikey is the right partner — and what the first thirty days look like.

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