Web App Development

Internal tools, client portals, SaaS dashboards, and data-driven platforms. I build web applications your team actually uses; not software that collects dust in a forgotten tab.

Platform

Web apps I build; and the ones I don't

I build internal business tools (inventory dashboards, booking systems, client portals), SaaS platforms (MVP to scale), data visualisation tools (Airtable-synced dashboards, real-time reporting), and workflow automation platforms (multi-step approval flows, document generation). I don't build mobile apps (use React Native for that) or real-time collaborative editors (use a specialised team). The sweet spot: business software that replaces spreadsheets and email chains with a purpose-built interface.

For the broader platform context, see the Webflow developer overview.

Technical

The stack I use: Webflow frontend, Airtable backend, Make.com glue

Webflow handles the UI (responsive, fast, client-editable). Airtable handles the data (relational, API-accessible, non-technical teams can manage it). Make.com handles the automation (webhooks, scheduled syncs, conditional workflows). For heavier backends, I use Sanity or Xano. The stack choice depends on data complexity and user count; I recommend the simplest stack that solves the problem, not the trendiest.

For the data layer that powers these apps, see Airtable + Webflow.

SaaS

SaaS development: from idea to paying customers

SaaS development breaks into three phases. Phase 1: MVP; the smallest thing that proves someone will pay. Usually a Webflow frontend + Airtable backend + Stripe payments, shipped in 4-6 weeks. Phase 2: Scale; migrate the backend to Xano or Sanity when Airtable hits row limits, add user authentication, build the admin dashboard. Phase 3: Optimise; performance, conversion, churn reduction. I've taken SaaS products from zero to paying users; the key is shipping the MVP fast and iterating from real usage data, not imagined requirements.

Process

How I build web apps that teams actually adopt

The #1 reason internal tools fail is not technical; it's adoption. If it's harder to use than the spreadsheet it replaces, nobody will use it. I design interfaces around existing workflows, not idealised ones. Discovery starts with watching your team do the task manually, then building the tool that removes the painful steps while keeping the familiar ones. User testing happens in week 2, not week 12.

Real example: a client's inventory tracking went from 3 people spending 4 hours/week on manual updates to a single Airtable-synced dashboard updated in real time.

For the CRO layer on SaaS products, see conversion optimisation.

Web App Process

From spreadsheet replacement to shipping software your team actually uses.

  • Discovery and workflow mapping

    I watch your team work, map the current process, identify the automation opportunity.

  • MVP build and user test

    Working prototype in 2-3 weeks. Real users test with real data.

  • Launch, monitor, iterate

    Ship the MVP, track usage, prioritise the next features from actual behaviour.

Projects

Recent builds that deliver

View all projects
Creative coworking with TOSH Space — TOSH Space
Ficus Health: I Built the Site for a 120-Clinic AI Platform — Ficus Health
Full-service agency with Creative Balcony — Creative Balcony
Healthcare CX with Fresh Squeezed Ideas — Fresh Squeezed Ideas
Listing Monster AI e-commerce platform — Listing Monster
Powering Telecoms World Forms and CMS — Telecoms World
Paid social with Aura Ads — Ryan Walton
Clinical trials with WithPower — WithPower
DeskLodge coworking and meeting spaces — DeskLodge
Creative education with Glasgow School of Art — The Glasgow School of Arts
Secure payment solutions with FMpay — FMpay
Mirador Local Google Business Profile platform — Mirador Local
UK care management software with Log my Care — Log my Care
Climate action with Commons.earth — Sanchali Pal
Finance leaders community with Tech CFO — Cooper Parry
Precix mobility wearables — Precix
Testimonials

What clients say

"As I grow in my business, I need services to grow with, Derrick is that service when it comes to my website. He is patient, listens and takes onboard the changes I want in a timely manner. My website changes and develops with the needs of my clients and my offer which is great. He also brings new ideas and perspectives in how to improve and grow in line with my goals and business needs. I look forward seeing how this new phase develops."

Karin Young

Karin Young

Psychotherapist · Karin Counselling

Karin Counselling

"Derrick has been a great help in getting our SaaS website up and running. He is very knowledgeable in Webflow and was able to help us get the most out of the platform. His design skills are excellent and he was able to create a custom function-filled website that looks great and operates perfectly. I would highly recommend Derrick to anyone looking for a web designer who knows his stuff!"

Taita Ngetich

Taita Ngetich

CEO · Synnefa

Synnefa

"Derrick is just great to work with! He's super fast, always responds in a timely manner, and is very flexible with last-minute requests. His Webflow development skills are rock solid and he has no problems keeping up with the fast pace of early-stage startups."

Carla Nassisi

Carla Nassisi

Growth · Briink

Briink

"It has been a pleasure to work with Derrick! He delivered a pixel-perfect website for LLI, which not only looks and performs well but is also very organised and simple to maintain! During the process, he had the patience to clear all the incoming doubts that occurred when we were transitioning from one platform to another, and he not only delivered a great site but also tutorials on how to manage it."

Isabelle Krauze

Isabelle Krauze

UX Lead · LLInformatics

LLInformatics

"Derrick is a gem of a person and a wealth of knowledge. He was so patient and helpful when explaining the more intricate parts of Webflow and bouncing around different possible solutions. He really knows the ins and outs of Webflow — it's no wonder that he's a certified Webflow Expert! I'm looking forward to the day when I get to work with him again."

Diana Donaldson

Diana Donaldson

CEO · Be Indigo

Be Indigo

"Derrick helped us redesign and build our site on Webflow and we couldn't be more pleased with the entire project. Derrick is very easy to communicate with, fast and efficient, and takes time to ask questions and provide suggestions where necessary. He has a great balance of technical and visual knowledge, which helped us build a fast, SEO-optimized site that looks great and is on-brand. Would happily hire Derrick again!"

Eliza Gerland

Eliza Gerland

Strategic Marketer · UFODrive

UFODrive

"Derrick and his team were wonderful to work with and helped us a lot with launching multiple Webflow projects in addition to doing a full website backend revamp. Recommend him to anyone!"

Liza Moiseeva

Liza Moiseeva

CMO · Commons

Commons

"Derrick and his colleague were tasked with helping to implement new designs for our Home and Product pages on our website. We had a super tight deadline and they took it in their stride. Their communication throughout the project was great and the results were fantastic. Would highly recommend."

Marcus Vitelli

Marcus Vitelli

Brand Executive · Flexciton

Flexciton

"Derrick translated our ideas into visually stunning designs. He took our vision for Mirador Local's online presence and brought it to life in a way that exceeded our expectations. I highly recommend him to anyone seeking a talented and reliable designer for their next project."

Gerry White

Gerry White

Global Growth · Mirador

Mirador

"Derrick has a solid and broad understanding of Webflow and has delivered huge improvements to our website."

Tim Sater

Tim Sater

Marketing Lead · Provenance

"Derrick and his team did a great job building our marketing site and leaving us with the tools to sustainably iterate on our website. They didn't stop until the site perfectly matched our design vision. We would definitely work with them again!"

John Outwater

John Outwater

Data Visualization · Renoster

Renoster

"Derrick made our vision a reality, he's simply a brilliant website developer. We're incredibly happy with the results, which match the designs. If you're a startup or scale-up looking for an excellent web developer to turn your ideas into reality, look no further!!"

Ben Leftley

Ben Leftley

Senior Delivery Manager · Unmind

"It was great working with Derrick’s team! Communication was smooth and the website ideation, design and development were executed well without much hiccups. Will highly recommend for your website projects! :)"

Indra Basak

Indra Basak

Marketing · PreciX

PreciX

"Derrick was conscientious, efficient and delivered on time. Communication was effective and they really understood the issues at hand. He ultimately delivered a professional looking website that exceeded expectations."

Miles Owen

Miles Owen

Head of Digital · FMpay

"As I grow in my business, I need services to grow with, Derrick is that service when it comes to my website. He is patient, listens and takes onboard the changes I want in a timely manner. My website changes and develops with the needs of my clients and my offer which is great. He also brings new ideas and perspectives in how to improve and grow in line with my goals and business needs. I look forward seeing how this new phase develops."

Karin Young

Karin Young

Psychotherapist · Karin Counselling

Karin Counselling

"Derrick has been a great help in getting our SaaS website up and running. He is very knowledgeable in Webflow and was able to help us get the most out of the platform. His design skills are excellent and he was able to create a custom function-filled website that looks great and operates perfectly. I would highly recommend Derrick to anyone looking for a web designer who knows his stuff!"

Taita Ngetich

Taita Ngetich

CEO · Synnefa

Synnefa

"Derrick is just great to work with! He's super fast, always responds in a timely manner, and is very flexible with last-minute requests. His Webflow development skills are rock solid and he has no problems keeping up with the fast pace of early-stage startups."

Carla Nassisi

Carla Nassisi

Growth · Briink

Briink

"It has been a pleasure to work with Derrick! He delivered a pixel-perfect website for LLI, which not only looks and performs well but is also very organised and simple to maintain! During the process, he had the patience to clear all the incoming doubts that occurred when we were transitioning from one platform to another, and he not only delivered a great site but also tutorials on how to manage it."

Isabelle Krauze

Isabelle Krauze

UX Lead · LLInformatics

LLInformatics

"Derrick is a gem of a person and a wealth of knowledge. He was so patient and helpful when explaining the more intricate parts of Webflow and bouncing around different possible solutions. He really knows the ins and outs of Webflow — it's no wonder that he's a certified Webflow Expert! I'm looking forward to the day when I get to work with him again."

Diana Donaldson

Diana Donaldson

CEO · Be Indigo

Be Indigo

"Derrick helped us redesign and build our site on Webflow and we couldn't be more pleased with the entire project. Derrick is very easy to communicate with, fast and efficient, and takes time to ask questions and provide suggestions where necessary. He has a great balance of technical and visual knowledge, which helped us build a fast, SEO-optimized site that looks great and is on-brand. Would happily hire Derrick again!"

Eliza Gerland

Eliza Gerland

Strategic Marketer · UFODrive

UFODrive

"Derrick and his team were wonderful to work with and helped us a lot with launching multiple Webflow projects in addition to doing a full website backend revamp. Recommend him to anyone!"

Liza Moiseeva

Liza Moiseeva

CMO · Commons

Commons

"Derrick and his colleague were tasked with helping to implement new designs for our Home and Product pages on our website. We had a super tight deadline and they took it in their stride. Their communication throughout the project was great and the results were fantastic. Would highly recommend."

Marcus Vitelli

Marcus Vitelli

Brand Executive · Flexciton

Flexciton

"Derrick translated our ideas into visually stunning designs. He took our vision for Mirador Local's online presence and brought it to life in a way that exceeded our expectations. I highly recommend him to anyone seeking a talented and reliable designer for their next project."

Gerry White

Gerry White

Global Growth · Mirador

Mirador

"Derrick has a solid and broad understanding of Webflow and has delivered huge improvements to our website."

Tim Sater

Tim Sater

Marketing Lead · Provenance

"Derrick and his team did a great job building our marketing site and leaving us with the tools to sustainably iterate on our website. They didn't stop until the site perfectly matched our design vision. We would definitely work with them again!"

John Outwater

John Outwater

Data Visualization · Renoster

Renoster

"Derrick made our vision a reality, he's simply a brilliant website developer. We're incredibly happy with the results, which match the designs. If you're a startup or scale-up looking for an excellent web developer to turn your ideas into reality, look no further!!"

Ben Leftley

Ben Leftley

Senior Delivery Manager · Unmind

"It was great working with Derrick’s team! Communication was smooth and the website ideation, design and development were executed well without much hiccups. Will highly recommend for your website projects! :)"

Indra Basak

Indra Basak

Marketing · PreciX

PreciX

"Derrick was conscientious, efficient and delivered on time. Communication was effective and they really understood the issues at hand. He ultimately delivered a professional looking website that exceeded expectations."

Miles Owen

Miles Owen

Head of Digital · FMpay

"As I grow in my business, I need services to grow with, Derrick is that service when it comes to my website. He is patient, listens and takes onboard the changes I want in a timely manner. My website changes and develops with the needs of my clients and my offer which is great. He also brings new ideas and perspectives in how to improve and grow in line with my goals and business needs. I look forward seeing how this new phase develops."

Karin Young

Karin Young

Psychotherapist · Karin Counselling

Karin Counselling

"Derrick has been a great help in getting our SaaS website up and running. He is very knowledgeable in Webflow and was able to help us get the most out of the platform. His design skills are excellent and he was able to create a custom function-filled website that looks great and operates perfectly. I would highly recommend Derrick to anyone looking for a web designer who knows his stuff!"

Taita Ngetich

Taita Ngetich

CEO · Synnefa

Synnefa

"Derrick is just great to work with! He's super fast, always responds in a timely manner, and is very flexible with last-minute requests. His Webflow development skills are rock solid and he has no problems keeping up with the fast pace of early-stage startups."

Carla Nassisi

Carla Nassisi

Growth · Briink

Briink

"It has been a pleasure to work with Derrick! He delivered a pixel-perfect website for LLI, which not only looks and performs well but is also very organised and simple to maintain! During the process, he had the patience to clear all the incoming doubts that occurred when we were transitioning from one platform to another, and he not only delivered a great site but also tutorials on how to manage it."

Isabelle Krauze

Isabelle Krauze

UX Lead · LLInformatics

LLInformatics

"Derrick is a gem of a person and a wealth of knowledge. He was so patient and helpful when explaining the more intricate parts of Webflow and bouncing around different possible solutions. He really knows the ins and outs of Webflow — it's no wonder that he's a certified Webflow Expert! I'm looking forward to the day when I get to work with him again."

Diana Donaldson

Diana Donaldson

CEO · Be Indigo

Be Indigo

"Derrick helped us redesign and build our site on Webflow and we couldn't be more pleased with the entire project. Derrick is very easy to communicate with, fast and efficient, and takes time to ask questions and provide suggestions where necessary. He has a great balance of technical and visual knowledge, which helped us build a fast, SEO-optimized site that looks great and is on-brand. Would happily hire Derrick again!"

Eliza Gerland

Eliza Gerland

Strategic Marketer · UFODrive

UFODrive

"Derrick and his team were wonderful to work with and helped us a lot with launching multiple Webflow projects in addition to doing a full website backend revamp. Recommend him to anyone!"

Liza Moiseeva

Liza Moiseeva

CMO · Commons

Commons

"Derrick and his colleague were tasked with helping to implement new designs for our Home and Product pages on our website. We had a super tight deadline and they took it in their stride. Their communication throughout the project was great and the results were fantastic. Would highly recommend."

Marcus Vitelli

Marcus Vitelli

Brand Executive · Flexciton

Flexciton

"Derrick translated our ideas into visually stunning designs. He took our vision for Mirador Local's online presence and brought it to life in a way that exceeded our expectations. I highly recommend him to anyone seeking a talented and reliable designer for their next project."

Gerry White

Gerry White

Global Growth · Mirador

Mirador

"Derrick has a solid and broad understanding of Webflow and has delivered huge improvements to our website."

Tim Sater

Tim Sater

Marketing Lead · Provenance

"Derrick and his team did a great job building our marketing site and leaving us with the tools to sustainably iterate on our website. They didn't stop until the site perfectly matched our design vision. We would definitely work with them again!"

John Outwater

John Outwater

Data Visualization · Renoster

Renoster

"Derrick made our vision a reality, he's simply a brilliant website developer. We're incredibly happy with the results, which match the designs. If you're a startup or scale-up looking for an excellent web developer to turn your ideas into reality, look no further!!"

Ben Leftley

Ben Leftley

Senior Delivery Manager · Unmind

"It was great working with Derrick’s team! Communication was smooth and the website ideation, design and development were executed well without much hiccups. Will highly recommend for your website projects! :)"

Indra Basak

Indra Basak

Marketing · PreciX

PreciX

"Derrick was conscientious, efficient and delivered on time. Communication was effective and they really understood the issues at hand. He ultimately delivered a professional looking website that exceeded expectations."

Miles Owen

Miles Owen

Head of Digital · FMpay

Need a website or system?

Let's talk about it

Need a website or system? Tell me about your project and I'll get back the same working day.

Web App Development FAQs

Common questions about building custom web applications, from MVPs to full-scale SaaS platforms.

A website presents information. A web app lets users do something: manage inventory, book appointments, run reports, process payments. If users log in and interact with data, it's a web app. I build both; and the line between them is blurring.

An MVP (core functionality, basic UI, payment if needed) typically ranges from £5,000-£15,000. Complex apps with multiple user roles, real-time data, and advanced workflows range higher. Book a call with your requirements for a fixed quote.

MVP: 4-6 weeks. Full product: 8-16 weeks depending on complexity. I ship in phases so you can start using (or selling) the app while I build the next phase.

Yes. Airtable, Google Sheets, SQL databases, REST APIs; if it has an API or can export CSV, I can work with it. The frontend is independent of the data source.

Yes. Webflow hosts the frontend (fast CDN, 99.9% uptime). Airtable or Xano hosts the backend. I set up monitoring, backups, and hand over admin access so you're never locked in.

need a hand?

Webflow Developer, UK

I love to solve problems for start-ups & companies through great low-code Webflow design & development. 🎉

Webflow developerWebflow LondonWebflow product workshop
Professional Partner