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ENSEK Tech Stack

SaaS platform for energy supplier digital transformation and billing

Utilities Nottingham, Nottinghamshire 501–1,000 employees Founded 2010 Privately Held

ENSEK operates a SaaS platform built on AWS, GCP, and Azure, with a modern polyglot stack (Node.js, TypeScript, React, PostgreSQL, Kubernetes). The hiring mix skews heavily toward senior and director-level roles across product, design, and engineering—paired with active projects around device management, revenue assurance, and whole-home optimization—suggesting the company is scaling leadership and product complexity rather than raw headcount. Legacy system integration and revenue leakage reduction appear in their documented challenges, typical friction points for platforms integrating with energy suppliers' incumbent infrastructure.

Tech Stack 23 technologies

Core StackAWS Node.js TypeScript JavaScript React React Native Kubernetes PostgreSQL Temporal CircleCI ArgoCD BigQuery Databricks Jira GCP Azure Cloud Pub/Sub Expo iOS Android SQL Excel Aha!

What ENSEK Is Building

◆Challenges

Design practice evolving
Legacy systems
Seamless consumer experiences
Reducing revenue leakage
Lower energy costs
Complex customer use cases
Competitive compensation
Gender pay gap
Engagement via recognition
Reducing energy costs

▲Active Projects

Ceo operating rhythm
Electrified device management system
Research capabilities
Total reward strategy
Benefit program design
Gender gap reporting
Simplest, smartest system for managing electrified devices
Board preparation
Whole-home optimisation platform
Revenue assurance reporting suite

Hiring Activity

Steady15 roles · 5 in 30d

Department

Finance

3

Product

3

Design

2

Engineering

2

Executive

2

HR

1

Marketing

1

Ops

1

Seniority

Senior

7

Director

5

Manager

2

Mid

1

Notable leadership hires: Product Director, Head of Engineering

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About ENSEK

ENSEK is a privately held SaaS company founded in 2010 and headquartered in Nottingham, UK. The platform enables digital transformation for mid-market and leading energy suppliers, addressing billing, settlements, data flow management, and customer experience. With 501–1,000 employees, ENSEK operates across core specialties including settlements reconciliation, market messaging, revenue assurance, and net-zero product innovation. The company sells into a regulated, compliance-heavy vertical where suppliers manage complex customer use cases, interconnected billing workflows, and pressure to reduce operational cost and energy costs simultaneously.

HeadquartersNottingham, Nottinghamshire

Company Size501–1,000 employees

Founded2010

Hiring MarketsUnited Kingdom

Frequently Asked Questions

What tech stack does ENSEK use?

ENSEK runs on AWS, GCP, and Azure cloud platforms. Core technologies include Node.js and TypeScript for backend services, React and React Native for frontend, Kubernetes for orchestration, PostgreSQL for relational data, and Databricks for analytics. CI/CD is handled via CircleCI and ArgoCD.