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Company profile

Relay Technologies Tech Stack

Last-mile delivery network and routing software for e-commerce retailers

Consumer Services London 51–200 employees Founded 2022 Privately Held

Relay Technologies is a London-based delivery network built to cut last-mile shipping costs for online retailers. Its stack pairs Rust, C++ and Julia with ONNX model serving on GCP and Kubernetes, pointing to compute-heavy routing and optimisation work rather than a simple courier app. Engineering-heavy, accelerating hiring alongside a new Sales Director role suggests the company is scaling both its ML platform and commercial coverage.

Tech Stack 28 technologies

Core StackPython Rust C++ TypeScript Flutter BigQuery Kubernetes PostgreSQL dbt Tableau Looker Dagster Apache Airflow Google Analytics Google Ads Deel Ashby Slack Vanta Julia GCP Cloud Run ONNX Google Slides Google Tag Manager SEMrush Notion Cube.js

What Relay Technologies Is BuildingChallenges and projects from their job posts

◆Challenges

High delivery costs burdening e-commerce retailers
Volume peaks, outages and labour gaps
High-volume, time-pressured parcel sortation
Logistics inefficiencies and friction
Reducing miles driven per delivery
Constantly changing operations

▲Active Projects

Routing algorithms and last-mile optimisation models
Building ML platform and model serving architecture
Real-time optimisation services
Data infrastructure stack build-out
Courier-facing software and operational tools
Core API development

Hiring Activity

Accelerating15 roles · 10 in 30d

Department

Engineering

Data

Ops

Sales

Logistics

Seniority

Senior

Manager

Junior

Director

Mid

Staff

Notable leadership hires: Sales Director

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About Relay Technologies

Relay Technologies operates a delivery network for e-commerce, aiming to lower the cost of moving goods so retailers of all sizes can sell online profitably. The company builds its own courier-facing software, operational tools, core APIs and routing algorithms to run sortation and last-mile delivery. Founded in 2022 and privately held, Relay is headquartered in London and employs 51–200 people. It hires in the United Kingdom and Bulgaria across engineering, data, operations, sales and logistics.

HeadquartersLondon

Company Size51–200 employees

Founded2022

Hiring MarketsUnited Kingdom, Bulgaria

Frequently Asked Questions

What tech stack does Relay Technologies use?

Relay uses Python, Rust, Julia, C++ and TypeScript, with Flutter for apps, GCP (BigQuery, Cloud Run), Kubernetes, PostgreSQL, ONNX, and a data layer of dbt, Dagster, Airflow, Looker, Tableau and Cube.js.

What is Relay Technologies working on?

Relay is building routing algorithms, real-time and last-mile optimisation models, courier-facing software, core APIs, operational tools, and a maturing ML platform with end-to-end model productionisation.

Where does Relay Technologies hire?

Relay is headquartered in London and hires in the United Kingdom and Bulgaria, with engineering the dominant function alongside data, operations, sales and logistics roles.

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How this profile is built

Relay Technologies's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.