28+ startups and SMEs since 2020

AI can build software. It can't take responsibility for it.

We help startup founders and SMEs make sound technology decisions, build software and AI-enabled workflows that solve real business problems, and stay involved after launch. From a new SaaS product to a painful internal process, we start with the problem, not the tool.

AI can build software. It can't take responsibility for it.

Good technology starts with a clear problem

Too many projects begin with a tool, a trend, or a half-formed feature list. The result is often software that works technically but does not solve the thing the business actually needed.

A founder is left unsure what should be built next. An SME buys another tool and adds another manual step. A supplier delivers the scope and moves on.

We start by understanding the business problem, the people involved, and what a useful outcome looks like. Then we decide whether the answer is better software, automation, AI, an integration, or simply not building anything yet.

How we deliver technology

When we take responsibility for delivery, we work in four clear stages. You know what is being decided, what is being built, where human judgement sits, and what happens after launch.

1. Scope

We define the problem, the people affected, and what success needs to look like before anything gets built.

2. Build

We build the simplest reliable solution that fits the job, whether that is software, an integration, automation, or an AI-enabled workflow.

3. Control

For AI-driven, customer-facing, or commercially sensitive actions, we agree where a person needs to review or approve the outcome.

4. Run

We agree what happens after launch: handover, monitoring, support, improvements, and who owns what. No vague promises and no disappearing act.

What we help you build and improve

For a founder, that might mean getting a product from idea to launch. For an SME, it might mean replacing a messy spreadsheet, connecting existing systems, or fixing a workflow that wastes hours every week.

Bespoke Applications

Web applications built around your users, your workflows and how the business actually runs.

AI-enabled Workflows

Use AI where it genuinely helps: to remove repetitive work, speed up decisions, or handle information more efficiently, with sensible checks around the parts that matter.

Automation & Integrations

Connect the systems you already use so information moves where it should without someone copying, chasing, or checking it by hand.

Internal Operations Tools

Replace the spreadsheet, inbox, or workaround your team quietly depends on with software built around the way the business actually works.

SaaS Product Development

Take a product from idea to launch with clear scope, sensible technical choices, and a build that can keep evolving once real users arrive.

Technical Consulting

Get an independent view on what to build, what to leave alone, which vendors or tools make sense, and where the technical risks really are.

Clear ways to get the right level of support

Built something with AI? Get it reviewed. Have an idea? Get technical clarity before you build. Technology central to the business? Get ongoing Fractional CTO support. Need something built? Let's scope it properly.

AI-Built Product Review

For founders who have built an MVP, SaaS product or app with AI tools or vibe coding, and want an experienced technical second opinion before launching or investing further.

£500

  • Fixed scope
  • Paid to reserve a slot
  • A review of your product, codebase, architecture and setup, where relevant
  • The security, reliability and maintainability risks that actually matter
  • Honest challenge on technical decisions that don't make sense
  • What needs fixing now, and what can safely wait
  • Your next 3–5 technical priorities
  • The technical concepts behind each decision, explained so you understand them

You leave knowing whether what you've built is technically sensible, where the real risks are, and what to do next.

Product Clarity Sprint

For founders who have an idea but haven't built yet, or have an early prototype, and need proper technical direction before committing serious time or money.

£1,995

  • 7–10 days
  • Fixed scope
  • Paid to reserve a slot
  • The business problem and your intended users, properly understood
  • What the MVP actually needs, and what should not be built yet
  • Whether the answer is AI tooling, existing SaaS, automation, integrations or bespoke software
  • Architecture and technology direction, with the trade-offs made clear
  • The major technical and product risks, identified early
  • Sensible milestones for getting it built
  • What you can realistically build with AI yourselves, and where you need experienced help

You'll know what to build, what not to build, how to approach the technology, and where to spend or save money.

Fractional CTO

For startups and SMEs where technology matters to the business, but a full-time CTO isn't needed or can't be justified yet. We make the difficult technical calls and stand behind them.

from£2,000/mo

  • Monthly
  • Senior technical ownership
  • Paid upfront
  • Senior technical ownership and decision-making
  • Technology roadmap and priorities: what gets built, what gets dropped, and why
  • Architecture and technical decisions made, and stood behind
  • Oversight of your developers, agency or technical suppliers, with code and quality review where appropriate
  • Support for your team to make sound technical decisions
  • AI, automation and integrations introduced where they genuinely improve the business
  • Unnecessary technology, complexity and spending stopped early
  • Delivery kept aligned with business outcomes

Bespoke software development is not included in the retainer. If something needs building, we scope it separately.

Bespoke Software Development

For startups and SMEs that need a custom SaaS product, web application, internal business system, integration, automation or other bespoke software.

Custom scope

  • Priced per project
  • Not a fixed-price package
  • We start by understanding the business problem, not the feature list
  • Then we scope the software that actually solves it
  • Custom SaaS products and web applications
  • Internal business systems and tools
  • Integrations and automation between the systems you already use
  • Scope and price agreed before any build starts

Not sure yet what should be built? The Product Clarity Sprint is often the right first step.

Trusted by startups, SMEs and institutions

Real organisations have trusted LumenHarbor to turn complex requirements into dependable software, clearer decisions and more productive operations.

Sweqlink Ltd logo
I've been working with LumenHarbor for over two years now, which says a lot about the value they bring. They’re thoughtful in their approach and truly care about the work they deliver. I'd happily recommend them as a trusted technical partner.

Sweqlink Ltd

Axiom Utilities Ltd logo
Amazing service. Our requirement was for a complex, data-intensive, user accessible web portal, and it was done with ease.

Axiom Utilities Ltd

Lancaster University logo
Aditya has high level of capacity to understand business ideas and highly skilled to turn these ideas into working prototypes/software. Cooperative, efficient, reliable, knowledgeable, and expert in programming.

Lancaster University

Ology Kids Casting logo
It has been a pleasure to work with Aditya during the on-going improvements to the site - his knowledge and professionalism is absolutely superb and the upgraded site has significantly increased productivity throughout the agency

Ology Kids Casting

We build and run our own products

Garchi CMS is our flagship. Everything we recommend to clients, we have had to get right in our own product first.

Garchi CMS

Our flagship product: an agent-native headless CMS with a built-in MCP server. Humans and AI agents share one backend, with version history and control over what changes. This website runs on it.

Garchi CMS product screenshot

VerbalTide

A platform that turns audio, video and YouTube content into blog articles, social posts, summaries and notes.

VerbalTide product screenshot

Frequently Asked Questions

Bring us the business problem. We'll tell you the right technical next step, even when that's doing nothing yet.