Upstream Tech Stack

Mobile marketing platform serving 1.2B consumers across emerging markets

Software Development London, 201–500 employees Founded 2001 Privately Held

Upstream operates a mobile-first marketing platform built on Python, Java, Kafka, and Kubernetes for 1.2 billion end consumers across 45+ countries in Latin America, Africa, the Middle East, and Southeast Asia. The hiring velocity is accelerating with a 9:4 engineering-to-sales ratio and concurrent investments in security (2 open roles) and presales infrastructure — reflecting simultaneous pushes on product stability, regional expansion, and operator partnerships. Active projects signal movement into automation and European market entry alongside vulnerability management work.

Tech Stack 37 technologies

Core StackPython Linux Jira SAP Java Hibernate RabbitMQ Kafka Maven Redis Elasticsearch Couchbase React Next.js Express.js JavaScript TypeScript Kubernetes VMware AWS bash SQL Microsoft Office Excel Spring Framework Git Hazelcast Ehcache HTML CSS+7 more

What Upstream Is Building

◆Challenges

Expanding footprint with mobile operators
Maintaining production stability
Performance and scalability needs
Global presales coordination
Data-driven decision making
Pipeline accuracy and reporting
Strengthening position as leader
Automating tasks and procedures
Mission-critical applications
Managing security incidents

▲Active Projects

Automating tasks and procedures
Marketing technology platform
Large mobile marketing projects
Global presales engine
Financial modeling for commercial forecasts
Regional sales strategy for mena
Vulnerability management lifecycle
Security audits
Strategic partnerships and joint go-to-market initiatives
Market entry strategies for new european markets

Hiring Activity

Accelerating20 roles · 9 in 30d

Department

Engineering

Sales

Security

Support

Finance

Marketing

Product

Seniority

Senior

Mid

Director

Manager

Notable leadership hires: Sales Director

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About Upstream

Upstream is a mobile marketing platform serving telcos, insurers, retailers, and education companies across emerging markets. The core offering combines performance marketing with omnichannel digital journeys powered by operator billing and digital subscriptions. Founded in 2001 and headquartered in London, the company operates across Latin America, Africa, the Middle East, and Southeast Asia with 201–500 employees. Current pain points center on production stability at scale, global presales coordination, and expanding partnerships with mobile operators — alongside internal data infrastructure for pipeline accuracy.

HeadquartersLondon,

Company Size201–500 employees

Founded2001

Hiring MarketsGreece, Malaysia, Bulgaria

Frequently Asked Questions

What tech stack does Upstream use?

Python, Java, Spring Framework, Kafka, RabbitMQ, Kubernetes, React, Next.js, SQL, Redis, Elasticsearch, and Couchbase. Infrastructure runs on AWS and VMware.

What countries does Upstream operate in?

Currently active in 45+ countries across Latin America, Africa, the Middle East, and Southeast Asia. Currently hiring in Greece, Malaysia, and Bulgaria with strategic focus on European market entry.