keylight Tech Stack

End-to-end subscription billing and recurring revenue platform

Software Development Berlin, BE 51–200 employees Founded 2015 Privately Held

keylight operates a subscription management platform built on a polyglot stack (React, Angular, Node.js, PostgreSQL, Kafka, Kubernetes) that reveals an architecture built for scale and real-time transaction processing. Active projects around event-driven transaction processing, high-throughput microservices, and billing backend enhancements align directly with their stated pain points—scaling transaction volumes and reducing latency—suggesting engineering is laser-focused on making the billing layer faster and more reliable rather than adding new surface features.

Tech Stack 33 technologies

Core StackReact Angular Vue JavaScript TypeScript AWS Webpack Kubernetes Terraform Grafana PostgreSQL Redis Kafka Node.js Salesforce NetSuite SAP GitHub MySQL CSS RxJS HTML5 npm Yarn Azure GCP DATEV LinkedIn Apache XML+3 more

What keylight Is Building

◆Challenges

Scaling billing platform
Handling high transaction volumes
Ensuring low latency
Technical issues reported by customers
Streamlining recurring operations
Driving demand generation
Reducing cost per lead
Improving operational efficiency within teams
Strengthening billing engine
Improving billing scalability

▲Active Projects

Core platform architecture for scale
Invoice generation and processing systems
High-throughput microservices
Custom integrations
Technical extensions
Account-based marketing strategy
Scaling digital campaigns in the eu
Enhance billing backend services
Develop event-driven transaction processing
Build compliant billing systems

Hiring Activity

Minimal20 roles · 0 in 30d

Department

Engineering

Marketing

Finance

Ops

Sales

Support

Seniority

Senior

Mid

Junior

Principal

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About keylight

keylight is a subscription platform company based in Berlin serving mid-market and enterprise businesses that operate recurring revenue models. The product spans customer journeys, billing automation, revenue recognition, and analytics, with pre-built integrations to ERPs (SAP, NetSuite, DATEV) and CRM systems (Salesforce). The company operates a senior-heavy engineering org (11 of 19 open roles at senior level) alongside minimal sales and marketing presence, consistent with a product-led or land-and-expand motion in the German and European market.

HeadquartersBerlin, BE

Company Size51–200 employees

Founded2015

Hiring MarketsGermany

Frequently Asked Questions

What tech stack does keylight use?

Frontend: React, Angular, Vue, TypeScript. Backend: Node.js, PostgreSQL, Redis, Kafka. Infrastructure: Kubernetes, Terraform, AWS, Azure, GCP. Observability: Grafana. Integrations: Salesforce, SAP, NetSuite, DATEV.

What is keylight working on?

Core platform scaling, invoice generation systems, event-driven transaction processing, billing backend enhancements, custom integrations, and compliant billing infrastructure. Complementary marketing work includes account-based strategy and EU demand-generation campaigns.