Application Development with D55

D55 is an Advanced AWS Partner delivering application development services for organisations building and modernising digital products on AWS.

We combine strategy, architecture and engineering to turn complexity into clarity.

Work with us

What Application Development Means Today
Modern application development brings together cloud, software and data into one delivery model.
With D55 you gain:
1. Bespoke and custom software development aligned to business outcomes
2. Cloud native and serverless application development on AWS
3. Enterprise application development for regulated and complex environments
4. Secure, scalable and resilient architectures built for growth
Source: Gartner states that cloud native application development enables faster innovation and greater business agility by aligning engineering, operations and security.
Get in touch today
Contact Us About Us
Why Organisations Invest in Application Development
Organisations come to D55 when existing systems are holding them back.
Common challenges include:
1. Legacy platforms that cannot scale or integrate
2. Slow delivery and rising engineering costs
3. Data locked in silos with limited insight
4. Security, resilience and compliance risks
Source: McKinsey reports that modern digital platforms are a critical foundation for successful transformation programmes and long term competitive advantage.
Our Application Development Approach
We work as your sherpas, guiding you from idea to production and beyond.
You can expect:
1. Product discovery and delivery aligned to business value
2. Architecture designed using AWS best practice
3. Agile engineering with strong governance and quality controls
4. Knowledge transfer so your teams grow in capability
We do not build in isolation.
We build with you, as an extension of your team.

Why D55

Loads of application development companies can build software. Very few can deliver cloud transformation. Loads of outsourcing companies can supply developers. Very few can deliver cloud transformation.
D55 is different because:

We are an Advanced AWS Partner managing the full lifecycle.

We combine strategy, architecture and engineering.

We are relationship led and outcome focused.

This is how we help organisations move further, faster.

Start Your Application Development Journey

Whether you are building a new digital product, modernising a legacy platform or scaling on AWS, D55 is your partner for application development services.

Build cloud native applications with confidence.

Modernise enterprise platforms safely.

Create scalable, resilient digital products.

Let us chart the route together.

What our Clients Say

“While we led the initial business scoping and discussions with key stakeholders, it was a very smooth process working the D55 team to expand on this vision. The D55 team took ownership of building the solution and worked closely with us throughout the process. The quality of the work, combined with the excellent support during the handover, is exactly what we value in a partner.”

Amber

CTO

Amber

"D55 enabled us to migrate from on-premise to a cloud-based solution, resulting in monthly cost savings of about 40%. Cloud-based systems give us a high level of resiliency and an unlimited capacity to scale. We’ve really put in place the foundations for later phases of work and further cost reduction as we scale. It was a partnership as opposed to a service - we work well together. "

Kooomo

CTO

kooomo

"Excellent technical knowledge, productive and responsive. Will go the extra mile to ensure customer satisfaction."

OnGen

Co-Founder, Managing Director

ongen

"D55 are a highly experienced team that helped lead our business to push for and deliver an innovative and ambitious legacy to AWS transformation, with confidence. D55 have become a valued development and consultancy partner thanks to their excellent practical capability and their ability to apply the most appropriate working methodology to the challenge at hand."

Switch2

Head of Digital Products

switch2

"D55 have helped to develop our CRM system and have been a valued partner in this process. We continue to work with D55 on our application development and would have no hesitation to recommend them."

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ITP Energised

Director

itp-energised

"D55 have proved to be an excellent development partner offering expertise and predictable delivery, with flexibility to respond to changing business needs. They have helped us explore new AWS technologies, challenged our thinking and sped up our adoption of relevant platform services."

Ensek

Director of Architecture

ensek

“D55 has been transformative for our business. They understood the business and our challenges and built a system that supports how we work now, as well as leveraging new technologies which are more cost-effective and increase our speed to deliver. Thanks to D55 we don’t have to worry about the day-to-day, so we can focus on the exceptional issues facing our industry."

Leading B2B Energy Supplier

CTO

energy

Solving problems and supporting innovation

Real-World Success Stories

Our notable area of specialism is the energy sector, where we have deep domain knowledge. However, the commonality of the challenges means that frequently work across diverse industries, including for private equity backed growth businesses, and would love to talk to you about how D55 can redefine how you think about modernisation.

Take a look at our collection of case studies showcasing the transformative impact of partnering with D55 and AWS.

All case studies