Primer Tech Stack

Unified payments infrastructure for global commerce

Financial Services London 51–200 employees Founded 2020 Privately Held

Primer operates a distributed payments platform built on Python, TypeScript, React, and Kubernetes—a cloud-native stack built to handle stateful, high-throughput transaction flows. The engineering-heavy org (16 engineers vs. 9 in sales) and active focus on fraud prevention, tokenization, and fallback mechanisms suggest a company solving for reliability and merchant conversion in a space where downtime and failed transactions directly cost revenue. Core projects center on backend performance, developer experience, and complex workflow automation across the payments ecosystem.

Tech Stack 16 technologies

Core StackPython TypeScript React AWS Kubernetes Terraform Java Go Swift Kotlin Jira Intune Slack 3D Secure Google Workspace macOS

What Primer Is Building

◆Challenges

Optimising merchant developer experience
High performance distributed systems
Reducing operational friction
Complex flows
Scalable and reliable payments
Improving conversion
Scaling backend services
Rebuilding payments and commerce
Scaling payment infrastructure
Merchant engagement

▲Active Projects

Developer frameworks and workflows for customer integration
Core backend services for high performance, complex distributed systems
Sales process and playbooks development
Fraud prevention
Fallbacks
Tokenization
Payments api
Merchant developer experience optimisation
Primer checkout
Streamline management of payments and complex workflows

Hiring Activity

Steady35 roles · 15 in 30d

Department

Engineering

Sales

Product

Design

Support

Seniority

Mid

Senior

Manager

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About Primer

Primer is a London-based payments infrastructure company serving merchants and acquirers who need direct visibility and control over their payment flows. Founded in 2020, the company has built a unified layer that abstracts complexity across gateways, processors, and payment methods—enabling merchants to optimize conversion, implement fraud rules, and switch providers without rebuilding checkout. The product surfaces as both an API (payments API, tokenization, fallbacks) and UI (Primer Checkout). The organization is distributed across Europe and North America, with active hiring in 8 countries across engineering, sales, product, and design.

HeadquartersLondon

Company Size51–200 employees

Founded2020

Hiring MarketsSouth Africa, Romania, Hungary, Poland, Portugal, France, Ireland, United States

Frequently Asked Questions

What is Primer's tech stack?

Core: Python, TypeScript, React, AWS, Kubernetes, Terraform. Additional languages: Java, Go, Swift, Kotlin. Tools: Jira, Slack, Google Workspace, Intune, 3D Secure.