How we work

Engineering teams

At Form3, we are firm believers that our teams should have autonomy and ownership of their work, and of the entire platform too. Our teams are responsible for every aspect of the work they are delivering, including testing, deployment and infrastructure. This gives our engineers a wide variety of challenges and growth opportunities.

Team Structure

We are firm believers that our teams should have autonomy and ownership of their work, and of the entire platform too. Our teams are responsible for every aspect of the work they are delivering, including testing, deployment and infrastructure. This gives our engineers a wide variety of challenges and growth opportunities.

Our team structure is organised with end-to-end ownership in mind, and each team consists of a mix of engineers and payments experts.

Markets

Our markets teams build and run critical payment processing services in the UK, Europe and internationally. We support a wide variety of payment processing schemes such as FPS, BACS, SEPA, SWIFT and more.

Key technologies: Go, Java

Here are some of the exciting things they do:

01

Implement and maintain the payment gateways which link our core platform with all the external payment schemes

02

Wrangle a wide variety of different integration technologies into our secure, resilient, cloud-native platform

03

Build microservices in Go (with the occasional older Java microservice thrown in), running on ECS or Kubernetes

04

Scale processing to millions of payments a day, while exceeding strict performance and reliability benchmarks

05

Work closely with the product and business teams in each market to build complete customer propositions

Core

Our core teams build, run and maintain critical cross-functional capabilities and services on our platform.

Key technologies: Go, Java, Elasticsearch

Here are some of the exciting things they do:

01

Develop and maintain shared functionality on our secure, multi-tenant systems through a mix of Go development and some older java microservices

02

Continuously improve our low-latency, high-throughput distributed payment processing architecture

03

Scale our high-volume transaction processing and storage, to process millions of payments a day across all our different markets

04

Design our core architecture to work across multiple cloud providers, while scaling, and remain secure and resilient

05

Design and build a highly flexible payment workflow engine to allow different types of transaction flows for each individual payment

Platform

Our platform teams build, run and maintain the infrastructure behind our cloud native systems. The teams play a crucial role ensuring the reliability and scalability of our entire platform.

Key technologies: Terraform, Kubernetes, CockroachDB, NATS, Cilium, AWS, GCP, Kong, Vault

Here are some of the exciting things they do:

01

Deliver and maintain our highly resilient, highly available, secure cloud infrastructure, networking and platform components

02

Use infrastructure-as-code (Terraform) to automate the build and maintenance of standardised stacks across multiple cloud providers (AWS, GCP, private cloud)

03

Work with Kubernetes and cloud-native data and messaging services such as Cockroach DB, NATS and Cilium to build our next generation platform

04

Design, build and maintain a highly resilient cross-cloud architecture to allow us to run active-active across multiple cloud providers

05

Build and maintain our private cloud stack running Kubernetes in our own data centres, adapting all our cloud-native technologies to this environment

06

Design, build and maintain a platform where any component (from networks, routers, servers, to OS and microservices) can be removed, replaced or upgraded without causing downtime

Tooling

Internal tools drive the productivity of our entire engineering team, and help us deliver software securely and at speed. Our tooling teams build and maintain our extensive developer tooling ecosystem.

Key technologies: Terraform, Kubernetes, Go, Github, AWS, Grafana, ELK

Here are some of the exciting things they do:

01

Build, deploy and maintain all Form3’s internal tooling using Go, Terraform and various open-source tools

02

Work together with other teams to identify, gather requirements and deliver tools that continually improve our development and delivery processes

03

Continually improve and scale our CI/CD tooling, logs, metrics, alerting and tracing platform, and remote access technologies

04

Work closely with InfoSec to secure all aspects of our internal tooling

05

Have a passion for software development best practice, and understand how tooling can support that

InfoSec

Form3 have an extensive team of defensive and offensive engineering teams that work together with our security officers.

Our security teams work closely together with all our other engineering teams to ensure that we maintain the highest standards of security on our platform.

Written by

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Adelina Simion Technology Evangelist

Adelina is a polyglot engineer and developer relations professional, with a decade of technical experience at multiple startups in London. She started her career as a Java backend engineer, converted later to Go, and then transitioned to a full-time developer relations role. She has published multiple online courses about Go on the LinkedIn Learning platform, helping thousands of developers up-skill with Go. She has a passion for public speaking, having presented on cloud architectures at major European conferences. Adelina holds an MSc. Mathematical Modelling and Computing degree.

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