HubSpot development
Custom apps, UI extensions, serverless functions, coded workflow actions and portals, written and maintained by our own engineers.
- Custom-coded workflow actions
- UI extensions and serverless functions
- Marketplace app development
UK HUBSPOT DIAMOND PARTNER
SpotDev is a HubSpot Diamond Solutions Partner and a UK HubSpot agency built by software engineers: an AI and digital transformation consultancy that builds real software. Our in-house, fully remote engineering team works with UK B2B companies from around £3m in revenue upwards that run on HubSpot and have outgrown configuration and workarounds.
Four service lines, delivered by one in-house engineering team. Most engagements start in one and expand into another once the system is working.
Custom apps, UI extensions, serverless functions, coded workflow actions and portals, written and maintained by our own engineers.
Two-way integrations between HubSpot and the systems you run on, plus CRM migration, deduplication and data engineering.
AI built into the systems you already run, with scoped access, a human approval step where it acts on something that matters, and an audit trail afterwards.
HubSpot CMS websites designed and built by the same team that connects them to your CRM, with technical SEO and answer-engine visibility included.
The same sequence on every project, whether the work is an integration, an AI build or a website. Scope is fixed before build starts, so the price is agreed before anyone writes code.
We look at your HubSpot portal, your data and the systems around it before proposing anything. Sometimes the finding is that you do not need us to build.
The diagnostic becomes a written scope with deliverables, assumptions and a price. You approve the scope before build starts.
Our in-house engineers build it, in a test environment first, with code review and a rollback path. You see progress every week.
Documentation, training for the people who will run it, and a support arrangement if you want one. The system stays yours.
Every firm on this page's competitor lists is a HubSpot Solutions Partner. HubSpot ranks its partners in tiers, Gold, Platinum, Diamond and Elite, on the revenue a partner manages and sells and on how well its clients are retained. SpotDev is a HubSpot Diamond Solutions Partner. That tells a buyer we run a lot of HubSpot portals and that the clients stay. It does not tell you whether we can write the integration, the custom object model or the AI agent you need, because tier measures commercial scale rather than engineering capability.
For technical work, three things say more than the tier:
If the work is campaigns, content and reporting inside HubSpot, a HubSpot marketing agency is the right partner. If HubSpot does not connect to something, does not do something, or does not hold the data you need, you need a partner that builds software. See how we approach HubSpot development, or request a quote.
We are fully remote, so we work with clients anywhere in the UK. These pages cover the towns and regions we are asked about most often, and where we travel on-site when it helps.
HubSpot engineering for B2B companies in and around Bath.
HubSpot engineering for B2B companies in and around Bristol.
HubSpot engineering for B2B companies in and around Cheltenham.
HubSpot engineering for B2B companies in and around Cheshire.
HubSpot engineering for B2B companies in and around Gloucestershire.
HubSpot engineering for B2B companies in and around Leeds.
HubSpot engineering for B2B companies in and around St Albans.
HubSpot engineering for B2B companies in and around Sunderland.
HubSpot engineering for B2B companies in and around Wales.
As a HubSpot partner, SpotDev works across four service lines: HubSpot development, HubSpot integrations, AI implementation and HubSpot websites, technical SEO and AEO. Work that starts as a migration or a portal rebuild often continues into CRM implementation, data migration or a managed RevOps arrangement.
If you are looking for a HubSpot agency near you, we publish a page for each place our team lives: HubSpot agency in Bath, HubSpot agency in Bristol, HubSpot agency in Cheltenham, HubSpot agency in Cheshire, HubSpot agency in Gloucestershire, HubSpot agency in Leeds, HubSpot agency in St Albans, HubSpot agency in Sunderland, HubSpot agency in Wales. Not sure what you need yet? Start with a diagnostic, or request a quote.
Choosing an agency for AI work turns on different evidence, and how to shortlist a UK AI implementation consultancy sets out the questions worth asking.
Everything you need to know about our services
SpotDev is a HubSpot Diamond Solutions Partner and a UK HubSpot agency built by software engineers: an AI and digital transformation consultancy that builds real software, working almost entirely with companies that run on HubSpot. The team is made up of software engineers rather than campaign managers, so the work is custom development, integrations, AI implementation and websites rather than content retainers.
Usually, yes. "HubSpot Solutions Partner" is the formal name for a firm in HubSpot's partner programme, and most partners describe themselves as HubSpot agencies. The distinction that matters is what the partner does: some run marketing and sales campaigns inside HubSpot, some implement and configure it, and a smaller number, including SpotDev, build custom software around it. Check the partner's tier and accreditations on the HubSpot Solutions Directory, then check what kind of work the reviews describe.
Start with the work, not the tier. Write down what HubSpot needs to do that it does not do today, then ask each partner to describe a comparable project, who built it, and what happened after handover. Check accreditations, which HubSpot awards after reviewing delivered work, and read the verified reviews on the Solutions Directory for that type of project. Ask for a fixed-scope price rather than a day rate, and ask who owns the code. A short paid diagnostic is a low-risk way to test a partner before committing to a build.
HubSpot ranks its Solutions Partners by tier, based on the revenue a partner manages and sells and on customer retention. Diamond sits above Gold and Platinum and below Elite, and puts a partner in the top few per cent of the programme worldwide. It is a measure of scale and retention, not of engineering ability, which is why the accreditations below matter more for technical work.
SpotDev holds HubSpot's Custom Integration Accreditation and its Onboarding Accreditation, both awarded after HubSpot reviews delivered work rather than after an exam. We also hold Cyber Essentials Plus, are an OpenAI Select Partner and are Certified in the Claude Partner Network. Our rating on the HubSpot Solutions Directory is 5.0 across 38 reviews.
A marketing agency runs campaigns inside HubSpot. We build the software around it: integrations with your ERP or finance system, custom objects and workflow actions, customer portals, AI that acts inside your CRM, and the website that feeds it. If your problem is that HubSpot does not connect to something, does not do something, or does not hold the data you need, that is engineering work.
We are an in-house, fully remote engineering team with no office. Most of the team is in the UK, in Bath, Bristol, Cheltenham, Cheshire, Leeds, Sunderland and Wales, with engineers in South Africa and Romania and a designer in Italy. Our registered address is Office 11, 3 Edgar Buildings, Bath BA1 2FJ. We work with clients anywhere in the UK and travel on-site when it helps.
On fixed scope, not day rates. A short diagnostic establishes what the work actually involves, and that becomes a written scope with deliverables and a price you approve before build starts. Prices depend entirely on scope, so we quote per project rather than publishing a rate card.
UK B2B companies from around £3m in revenue upwards, with no upper limit, that hold an active HubSpot subscription and have outgrown configuration and no-code workarounds. Below that, the cost of custom engineering rarely pays for itself and HubSpot's own tooling is usually the better answer.
Request a quote if you know what you want built, or start with a diagnostic if you want an assessment of the portal and the systems around it first. Either route puts you in front of the engineers who would do the work.
SpotDev is a HubSpot Diamond Solutions Partner, Custom Integration Accredited and Onboarding Accredited. Both accreditations are awarded after HubSpot reviews work we have delivered.
We also hold Cyber Essentials Plus, are an OpenAI Select Partner and are Certified in the Claude Partner Network, and our rating on the HubSpot Solutions Directory is 5.0 across 38 reviews.
Top 4% of HubSpot partners worldwide
Awarded by HubSpot for complex systems integration work
Awarded by HubSpot for enterprise onboarding delivery