Transforming a London Property Platform's Development Journey
Deployments reduced from hours to 4-6 minutes — unlocking daily release cycles.
The challenge
A London-based property technology company had built an innovative platform for commercial real estate transactions, but their development workflow had become a severe bottleneck. Deployments took between two and four hours, required manual intervention at multiple stages, and frequently failed in ways that were difficult to diagnose.
The development team was spending more time managing infrastructure than building product features. Releases were timed for low-traffic windows — typically Friday evenings — to minimize the impact of potential failures. Each release required a senior engineer on standby for the entire deployment window. The Google DORA 2024 Report found that elite performers maintain a change failure rate of 5 percent or lower and are 2x more likely to exceed organizational goals in profitability, productivity, and customer satisfaction. This team was nowhere near that bar.
The solution
Nepheli implemented a complete CI/CD overhaul centered on GitHub Actions, Docker-based build pipelines, and blue-green deployments on AWS ECS. The blue-green strategy was critical: it allowed new versions to be deployed alongside the existing version, health-checked, and then switched to — with instant rollback capability if any issue was detected.
We introduced infrastructure-as-code with Terraform for all AWS resources, centralized logging with a managed ELK stack for debugging, and automated compliance-integrated testing gates that prevent broken builds from reaching staging or production environments. Cloud automation has been shown to reduce IT management time by up to 45 percent in high-adoption organizations according to G2's research — and for this team, the impact was even more dramatic. The IaC market is projected to grow from $1.32 billion in 2025 to $9.40 billion by 2034 according to Precedence Research, reflecting the same shift this engagement embodied.
The results
Deployment time dropped from two to four hours to between four and six minutes. The team went from deploying once or twice per week to deploying multiple times per day with confidence. The blue-green strategy eliminated deployment-related downtime entirely, and the automated testing gates caught 94 percent of issues before they reached staging.
Developer satisfaction scores on internal surveys increased significantly, and the company accelerated their product roadmap by an estimated six weeks over the following quarter. The senior engineers who had been tethered to deployment windows were freed to focus on architecture and feature work — reclaiming the kind of cost-optimization and platform-building time that drives long-term value. The team's trajectory moved from low-performing to approaching the elite tier of DORA metrics — a transformation that began with infrastructure, not process mandates.