Custom Software Development · Chelmsford · Essex
Chelmsford, the only city in Essex, has a strong financial and business-services base, advanced manufacturing and R&D, and a fast-growing technology scene. Many of the established firms underneath that headline run on software built for a smaller, simpler business.
Trusted by:





Chelmsford has more than eight thousand businesses and contributes billions to the economy, with real strength in financial and business services, advanced manufacturing and research and development. It is dominated by small and micro enterprises but also hosts larger employers in professional services and manufacturing.
Those firms accumulate software debt as they grow: orders and jobs rekeyed between an ageing package and the accounts system, compliance and reporting that take days, processes that depend on one person. Off-the-shelf platforms cover most of it, but rarely the part that makes the business distinctive.
We fix the specific points where an ageing system is costing an established Chelmsford business time and money — the report that takes half a day, the data rekeyed between packages, the process that lives in one person's head — carefully, without ripping out everything that still works.
Our Essex work so far has been south of Chelmsford, closer to the Thames. Here's what it looks like, along with a few Kent clients just over the river.
If your Chelmsford business is in a similar spot, with systems that mostly work and a few places where they cost you time, the conversation starts the same way.
Chelmsford has a genuine technology and R&D presence: major financial-services employers such as MS Amlin, AON and Grant Thornton, research and development names like Teledyne e2v, and a growing crop of tech firms recognised in the regional Essex Tech 50. Much of that is product, fintech and research work.
Dev Partners works in a narrower lane: bespoke internal business systems, system integrations and legacy modernisation for established operating businesses across professional services, manufacturing and distribution. We are Kent-based and, via the Dartford Crossing, just across the Thames — close enough that meeting in person is straightforward when it helps.
What you get is a UK team that has done this since 2011, a fixed price rather than an open-ended estimate, and direct access to Rob and Jason, who are on every project.
Organisations named above are mentioned only to describe the local economy accurately; they are not affiliated with Dev Partners, and nothing here is a comment on them.
Chelmsford is about 21 miles from our Gravesend office in a straight line. Close enough that coming over is a normal part of a project, not a special trip.
We'd usually want to be there at the start, to see how the work really gets done rather than how the process document says it does, and again when the new system goes live. In between, the work is remote: regular calls, progress you can see, and Rob or Jason on the other end of the phone.
We'll come to you wherever you are if the project needs it.
Case, client, pipeline and compliance systems for the financial and professional firms that anchor Chelmsford's economy, built around how your firm actually works.
Migrating ageing databases and legacy applications to modern, maintainable platforms without disrupting operations — including COBOL, Access and early-generation PHP systems.
Connecting the packages you already run so data flows between them without manual re-entry: accounting, ERP, stock, CRM and e-commerce. If it has an API, we can connect it.
Custom job management, scheduling, quoting, approval and sign-off workflows that codify how your business runs and remove the dependency on individuals carrying the process.
A CRM built around how you really manage accounts, pipeline or cases, not how a generic vendor assumes you do. An open-source CRM such as Krayin or EspoCRM as a starting point, or fully bespoke.
Pulling data from multiple sources into dashboards and reports that are always current, instead of someone spending half a day extracting and formatting spreadsheets first.
The relationships that matter most to us are the ones that have run for years. A selection of who we have built for and kept running:
19 clients. A few of their words.
A well-rounded team, ensuring a full suite of expertise & resource is always available. CDS Global have seen the successful completion of major projects over the years where Dev Partners' ability to grasp the underlying business needs to provide a future-proof solution has been invaluable.
We have worked with Jason & his team to develop our Shopify store, and the experience was outstanding from start to finish. The design is clean, modern, and perfectly aligned with our brand identity, while the build is fast, responsive, and easy to manage on the backend. They clearly understood our vision and delivered a store we're genuinely proud of. Highly recommend to any brand looking for a top-quality Shopify partner.
After ongoing issues and delays with our previous developers, we brought in Rob & Jason at Dev Partners to take over all our websites and bespoke software. What a breath of fresh air, fully focused, excellent pre-launch designs and clear communication throughout. Highly recommended.
BPC Energy Ltd turned to Dev Partners for a complete turnkey solution, and they exceeded our expectations. The team handled everything from project management to development and support with real care and attention. They understood what we were aiming for, stayed on top of every detail, and always delivered on schedule with excellent quality.
Want your software, servers and tech plan handled as one monthly arrangement? See Your tech department.
The questions we think every business should ask a software developer, including us. The honest answers are on our custom software page.
We are Kent-based, in Gravesend — and via the Dartford Crossing Chelmsford is only around 30 miles away, just across the Thames. Most development runs remotely, and we travel into Essex when it helps. Being close by makes meeting in person straightforward when a project benefits from it.
Essex is one of our core regions, and via the Dartford Crossing it is closer than people expect. Most development runs remotely in any case, and being just across the Thames means meeting in person is easy when a project benefits from it.
Almost always. We connect bespoke software to the accounts packages, stock systems and other tools you already run, so you extend what works rather than replace it. The goal is your systems sharing data rather than duplicating it, without a disruptive big-bang replacement.
Yes. Modernising ageing databases and legacy software, including systems built on COBOL, Access or early PHP, is something we do regularly. We migrate data carefully and keep operations running throughout, rather than a cutover that brings everything down at once.
Established operators: financial and professional services, manufacturers and engineers, distribution and logistics, and growing firms that have outgrown their original tools. Anywhere a generic package no longer fits how the business runs.
Since 2011, from our office in Gravesend, with the same two directors. Several client relationships have run for over a decade. For a business building on software it intends to run for years, a developer who still answers the phone in ten years matters more than it sounds.
How we help established businesses, and the areas we cover.
Operational software lives or dies on the details — the edge cases, the handovers, the one report nobody ever documented. We build it properly the first time, in-house, so it keeps pace with the business instead of becoming the thing everyone works around.
Tell us which system or process is causing the most friction. We will give you an honest view of what is worth fixing, what it would involve, and whether the cost makes sense. We reply within one working day.
We will cover:
Kent-based, serving Essex — just across the Thames. We reply within one working day. Call 01474 639 089.
Tell us about your project and we will be in touch within one working day.