Plum Tech Stack

Mobile-first fintech app for automated personal savings

Financial Services London, England 201–500 employees Founded 2016 Privately Held

Plum operates a dual-platform (iOS and Android) personal finance app built on modern mobile architecture (Swift, Kotlin, Jetpack Compose). The engineering org is scaling fast—26 engineers across senior and mid-level roles—and the project backlog reveals both product expansion (new payment solutions, iOS rebuild) and operational hardening (risk modeling, compliance tooling, payment automation). Pain points cluster around payment workflow optimization and regulatory control, suggesting Plum is moving from growth-phase product-market fit toward operational maturity.

Tech Stack 50 technologies

Core StackKotlin Jetpack Compose Swift Sketch AWS Kubernetes PostgreSQL RabbitMQ Redis Terraform Prometheus OpenTelemetry Grafana GitHub Actions CircleCI Python BigQuery dbt Docker ArgoCD Loki Android Git Material Design Android Architecture Components iOS SDK iOS GCP Argo CD Argo Workflows+20 more

What Plum Is Building

◆Challenges

Streamlining reporting processes
Optimizing payment workflows
Streamlining payment workflows
Reducing payment discrepancies
Compliance with regulatory rules
Strengthening financial control environment
Reducing operational risk
Driving growth and adoption
Reducing transfer times
Feedback loop on changes

▲Active Projects

New payment solutions and product launches
Plum android app development
Automation initiatives for payment processes
Integration testing automation
Self-service tooling development
Build plum on ios from early days
Risk model development
Local testing improvement
Upgrade meeting room av setups
Automation initiatives for scalability

Hiring Activity

Steady55 roles · 15 in 30d

Department

Engineering

Finance

Ops

Product

Marketing

Support

Design

Seniority

Senior

Mid

Manager

Junior

Lead

Intern

Staff

Notable leadership hires: Engineering Lead

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About Plum

Plum is a UK-based fintech company founded in 2016 that offers a mobile savings app designed to automate personal wealth accumulation. The product runs on iOS and Android with a backend infrastructure spanning GCP, AWS, Kubernetes, PostgreSQL, and RabbitMQ. The company operates across 201–500 employees headquartered in London, with hiring activity in the UK, Greece, and Cyprus. Current focus areas include payment product launches, mobile app hardening, integration testing automation, and building self-service operational tooling.

HeadquartersLondon, England

Company Size201–500 employees

Founded2016

Hiring MarketsGreece, Cyprus, United Kingdom

Frequently Asked Questions

What tech stack does Plum use?

Plum's stack spans Kotlin and Swift for mobile (with Jetpack Compose and iOS SDK), GCP and AWS for cloud infrastructure, Kubernetes for orchestration, PostgreSQL for data, and observability tools including Prometheus, Grafana, and OpenTelemetry.