Join the Argo team as a Software Engineer to develop and enhance network software infrastructure, ensuring reliable connectivity for Cloudflare's services. Collaborate with engineering teams and manage software deployments while using a variety of technologies. Engage in all software development lifecycle stages and solve complex system issues.
What You'll Do
The Argo team was formed to own a very important aspect of Cloudflare's systems: enable more reliable network connectivity for Cloudflare's products than the Internet itself provides.
Almost all products in Cloudflare's portfolio are or will be powered by Argo technology, including CDN, Spectrum, Magic Transit, Stream, Workers, Workers AI, R2, WARP, and more. As a member of the Argo team, you'll be a key technical contributor to the cutting edge network software infrastructure used by those products.
You will work closely with various Engineering teams to translate their requirements into new capabilities on the platform. Likewise you will partner with Network Engineering and SRE to ensure that the technology makes the best use of Cloudflare's world-class edge network.
You will participate in all stages of the software development lifecycle, from designing and documenting systems, to writing code and automated tests, to planning, managing, and monitoring production software deployments. You will work with a wide range of technologies and programming languages, including Rust, Go, Linux networking, ClickHouse, PostgreSQL, Grafana, Kubernetes, and more.
Engineering teams at Cloudflare operate a Run What You Build model, including ours. We are responsible for the health of our system and participate in our team's on-call rotation as part of operational responsibilities.
Because you'll be solving problems of massive scale and significance, you are a growth-oriented individual who enjoys being outside of your comfort zone. You are comfortable in a fast-paced but sensible work environment. You value curiosity and empathy and lead with these values.
Examples of Desirable Skills, Knowledge, and Experience
Bonus Points
The Argo team was formed to own a very important aspect of Cloudflare's systems: enable more reliable network connectivity for Cloudflare's products than the Internet itself provides.
Almost all products in Cloudflare's portfolio are or will be powered by Argo technology, including CDN, Spectrum, Magic Transit, Stream, Workers, Workers AI, R2, WARP, and more. As a member of the Argo team, you'll be a key technical contributor to the cutting edge network software infrastructure used by those products.
You will work closely with various Engineering teams to translate their requirements into new capabilities on the platform. Likewise you will partner with Network Engineering and SRE to ensure that the technology makes the best use of Cloudflare's world-class edge network.
You will participate in all stages of the software development lifecycle, from designing and documenting systems, to writing code and automated tests, to planning, managing, and monitoring production software deployments. You will work with a wide range of technologies and programming languages, including Rust, Go, Linux networking, ClickHouse, PostgreSQL, Grafana, Kubernetes, and more.
Engineering teams at Cloudflare operate a Run What You Build model, including ours. We are responsible for the health of our system and participate in our team's on-call rotation as part of operational responsibilities.
Because you'll be solving problems of massive scale and significance, you are a growth-oriented individual who enjoys being outside of your comfort zone. You are comfortable in a fast-paced but sensible work environment. You value curiosity and empathy and lead with these values.
Examples of Desirable Skills, Knowledge, and Experience
- Systems-level programming experience in Go, Rust, C, or C++. We use Rust extensively, and while experience with the language isn't required a willingness to learn it is.
- A solid grasp of networking protocols in Layers 3 and 4 of the OSI Model.
- Knowledge of HTTP, TLS, and CDN networks.
- Experience in implementing secure and highly-available distributed systems.
- Strong ability to debug issues in complex systems.
- Strong collaboration and communication skills.
- Experience/interest in HTTP networking and VPN technologies.
- Experience/interest in network performance monitoring and tuning
Bonus Points
- Knowledge of TCP/IP and Internet routing.
- Professional systems-level programming experience in Rust.
- Working knowledge of statistical-analysis techniques and control theory.
- Experience building tools and APIs.
- Experience with monitoring, alerting, and debugging large-scale distributed systems
- Experience participating in an on-call rotation.
Top Skills
C
C++
Clickhouse
Go
Grafana
Kubernetes
Linux Networking
Postgres
Rust
Cloudflare London, England Office
Riverside Building, 6th Floor, County Hall/The, Belvedere Rd, London, United Kingdom, SE1 7PB
Similar Jobs at Cloudflare
Cloud • Information Technology • Security • Software • Cybersecurity
The Senior Systems Engineer will develop reliable network connectivity, work with engineering teams, manage software life cycle, and ensure system health.
Top Skills:
ClickhouseGoGrafanaKubernetesLinux NetworkingPostgresRust
Cloud • Information Technology • Security • Software • Cybersecurity
Design and build AI-powered product features, collaborating with teams to integrate and optimize AI solutions in existing systems and new products.
Top Skills:
AICloud ServicesDistributed SystemsTypescript
Cloud • Information Technology • Security • Software • Cybersecurity
Drive the strategy and roadmap for Cloudflare Realtime, lead product features from ideation through launch, focus on developer needs and experiences, and collaborate with multiple teams.
Top Skills:
SdksSfusTurn ServersWebrtcWebsockets
What you need to know about the London Tech Scene
London isn't just a hub for established businesses; it's also a nursery for innovation. Boasting one of the most recognized fintech ecosystems in Europe, attracting billions in investments each year, London's success has made it a go-to destination for startups looking to make their mark. Top U.K. companies like Hoptin, Moneybox and Marshmallow have already made the city their base — yet fintech is just the beginning. From healthtech to renewable energy to cybersecurity and beyond, the city's startups are breaking new ground across a range of industries.

