Modernising a UK Energy Supplier’s Core Operations Platform
Overview
A UK-based energy supplier needed to modernise its internal operations and replace fragmented manual processes with a secure, scalable digital platform.
The organisation managed a complex set of workflows across contracts, customer accounts, broker relationships, quotes, meters, billing, and internal administration. Much of this work relied on disconnected tools and manual coordination, creating operational inefficiency and limiting the company’s ability to scale.
Vesper designed and delivered the foundation for a modern cloud-based energy portal, giving the client a central platform for staff, brokers, and customers.
The Challenge
The client needed a platform that could support day-to-day operations while creating a long-term foundation for future growth.
Key challenges included:
Managing contracts, quotes, meters, and billing across disconnected systems
Reducing manual administrative work and repeated data entry
Improving data accuracy across operational and financial processes
Creating dedicated portal experiences for internal staff, brokers, and customers
Building a secure and scalable technical foundation
Supporting future product enhancements without reworking the architecture
The system needed to be reliable, secure, and flexible enough to support the client’s evolving operational requirements.
The Solution
Vesper delivered the preparation and initial development phase of a cloud-based operations portal.
The work included architecture planning, infrastructure setup, environment configuration, core product development, and initial launch support.
The platform was designed using AWS technologies, with clear separation between web, application, and database layers. Infrastructure was provisioned using Infrastructure as Code, allowing environments to be created consistently and managed with greater control.
Vesper established separate environments for development, testing, staging, and production, supported by automated CI/CD pipelines. This gave the team a safer and more predictable release process.
The initial product release focused on the staff portal and core operational modules, including quotes, contracts, billing, and meters. Role-based access controls were introduced to support different user groups and protect sensitive operational data.
Technical Delivery
The platform used a modern AWS-based architecture, including:
Amazon ECS Fargate for managed containerised application hosting
Amazon Aurora Serverless for scalable relational data storage
AWS Lambda and EventBridge for background tasks and scheduled operations
Amazon CloudFront and S3 for secure content delivery and file storage
AWS KMS for encryption at rest
AWS Certificate Manager for secure communications
Amazon CloudWatch and CloudTrail for logging, monitoring, and auditability
Terraform for Infrastructure as Code
GitHub Actions for automated testing and deployment
The delivery model combined product management, engineering, QA, and design, with close collaboration between Vesper and the client’s business team.
The Outcome
The project gave the client a secure and scalable operational platform that could support both current workflows and future expansion.
Key outcomes included:
Deployment of the core platform infrastructure
Launch of the initial staff portal
Centralisation of contracts, quotes, billing, and meter workflows
Reduced reliance on manual processes
Improved operational visibility and data accuracy
A stronger technical foundation for future portal features
More efficient collaboration between technical and business teams
The platform created a long-term foundation for the client to continue modernising operations and expanding digital services across staff, broker, and customer journeys.
Why It Matters
Energy suppliers rely on accurate data, reliable workflows, and secure systems to manage complex operational processes.
This project shows Vesper’s ability to design and deliver cloud-native business platforms that support operational resilience, automation, and long-term scalability.
