Wallester Tech Stack

Estonian-licensed card issuer and embedded finance platform for EEA payments

Financial Services Kesklinna linnaosa, Harju County 201–500 employees Founded 2016 Privately Held

Wallester is a Visa-licensed Estonian fintech running distributed infrastructure (Go, gRPC, Kubernetes, PostgreSQL, Redis) across AWS, Azure, and GCP. The stack shows strong systems maturity — service-oriented architecture, event streaming patterns (Linkerd mesh), and observability depth (Prometheus, Grafana, Elasticsearch). Hiring skews heavily technical (20 engineers, 4 designers, 3 product) with senior-level concentration (24 of 57 open roles), reflecting a company scaling payment infrastructure and tackling technical debt alongside compliance complexity.

Tech Stack 71 technologies

Core StackGo gRPC Docker Kubernetes PostgreSQL Redis AWS C# Java PHP JavaScript Terraform Elasticsearch Grafana Prometheus Jenkins GitLab GitHub Actions Python Power Query Figma Kotlin REST API Protocol Buffers JSON Linkerd Azure GCP Bash Excel+41 more

What Wallester Is Building

◆Challenges

Modernizing payment systems
Conversion rates
Optimizing accounting processes
Systemic technical risks
Technical debt
Raising architectural maturity
Changes in employment or ohs policies
Scaling payment infrastructure
Compliance risk assessment
Seamless integration with existing infrastructure

▲Active Projects

Card program launch platform
Optimizing accounting processes
Automation of accounting processes
Establishing architecture team
Client portal
Shared design system
Corporate governance compliance
Organisation-wide projects related to changes in employment or ohs policies
Internal training and awareness initiatives
Payment scheme compliance monitoring

Hiring Activity

Steady55 roles · 20 in 30d

Department

Engineering

Sales

Legal

Design

Finance

Marketing

Product

Seniority

Senior

Mid

Lead

Manager

Junior

Notable leadership hires: QA Team Lead, Chief Legal Officer

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About Wallester

Wallester is an Estonian-licensed financial institution and Visa partner (since 2018) offering embedded finance and card issuance to companies across the EEA and UK. The product surface splits into two areas: a white-label platform enabling businesses to launch branded payment cards within their own apps, and Wallester Business, a corporate expense-management tool providing virtual and physical Visa cards, spend analytics, and accounting integrations. The company operates across Estonia, Latvia, France, and the United Kingdom with over 200 employees. Revenue-generating products focus on streamlining payment workflows and opening new revenue streams for clients through card programs and embedded financial services.

HeadquartersKesklinna linnaosa, Harju County

Company Size201–500 employees

Founded2016

Hiring MarketsEstonia, Latvia, France, Azerbaijan, United States, Bulgaria, Turkey

Frequently Asked Questions

What tech stack does Wallester use?

Go, gRPC, Protocol Buffers, PostgreSQL, Redis, Docker, Kubernetes, Linkerd, AWS/Azure/GCP, with C#, Java, JavaScript, Python for platform services. Observability via Prometheus, Grafana, Elasticsearch; CI/CD via GitLab, GitHub Actions, Jenkins.