SRE Tech Lead

Established in 2001, RSAWEB is South Africa’s fastest growing internet service provider (ISP) with a focus on providing connectivity to home customers, and a wide array of technology solutions to businesses. We are obsessed about ensuring all our customers receive the best possible digital experience and exceptional customer service. Thousands of customers have given RSAWEB a 5-star rating, with an average rating of 4.7 out of 5 on Google - the best-rated ISP in South Africa. We are extremely proud of winning KFM’s Best of the Cape Awards: Best ISP in 2021 and 2022 being one of the fastest streaming ISPs on Netflix and a consistently top-rated ISP on MyBroadband. These accolades are not for nothing, as we constantly strive to improve our products, services, and solutions to enhance each customer’s experience. Having invested heavily in infrastructure, RSAWEB has built a strong presence in South Africa with Data Centres in Johannesburg and Cape Town.

Our Products and Services:

• Fibre-to-the-Home (FTTH)
• Fibre-to-the-Business (FTTB)
• Enterprise connectivity
• Mobile connectivity and data management
• Cloud infrastructure and more!

At RSAWEB, we are passionate about using our creativity, to provide innovative solutions and services, that allow our customers to succeed in all areas of life. We believe that we are in the business of connecting customers and businesses with each other and a world of infinite possibility and opportunity, through technology. Our mission transcends our values through every customer, every interaction, every connection, every day.

Our values:

• We Build Trust and Ownership
• We Honour & Respect People
• We Cultivate Passion & Creativity
• We Innovate Feverishly
• We Go the Extra Mile
• We Believe in Humility
• We Communicate Openly & Honestly
• We Make it Fun
• We Teach, Grow & Learn
• We Do More, With Less

The Site

Reliability Engineer (SRE) will take end-to-end ownership of the ISP’s internal

core infrastructure that powers our ISP, cloud, and hosting platforms. This

role operates with high autonomy and requires someone who can design, build,

maintain, and scale internal tools and services with minimal day-to-day

oversight.

You will develop

production-grade tooling (primarily in Go and Python), integrate internal

systems with third-party APIs, expose APIs for internal consumption, and ensure

the platforms we build are secure, observable, reliable, and high-performing.

This is a builder role: you will own the systems you create, drive improvements

across reliability and automation, and enable our network, cloud, and

engineering teams to operate efficiently without compromising uptime,

scalability, or security.

Key Objectives:

Infrastructure Ownership & Reliability

• Own and operate core internal

  infrastructure supporting ISP, cloud, and hosting platforms.

• Maintain, improve, and extend

  existing internal systems with a strong reliability and observability focus.

• Ensure services are scalable, secure,

  highly available, and well-instrumented.

Tooling & Service Development

• Design, build, and run internal tools

  and services, primarily in Go and Python.

• Integrate with third-party APIs using

  REST/JSON and webhooks.

• Develop and expose HTTP/JSON APIs for

  internal systems.

• Select, implement, and operate

  open-source and self-hosted solutions where practical.

Automation & Standardisation

• Lead automation initiatives to reduce

  manual effort (toil) and streamline infrastructure operations.

• Drive standardisation of tools,

  documentation, and operational processes.

Operational Excellence

• Ensure strong monitoring, alerting,

  and observability across systems.

• Participate in incident response,

  root-cause analysis, and performance troubleshooting.

• Maintain documentation such as

  runbooks, architecture notes, and troubleshooting guides.

Collaboration & Support

• Work closely with cloud, network, and

  development teams to provide stable internal platforms.

• Support the ongoing operation of

  services you build, including participation in an on-call rotation for critical

  infrastructure.

Requirements

• Strong

  ownership mindset with a focus on identifying and solving root-cause issues.

• Solid

  Linux system administration experience (Debian/Ubuntu preferred).

• Experience

  in SRE, Infrastructure, Operations, or Platform Engineering roles.

• Production

  experience building and maintaining tooling/services in Go and/or Python.

• Ability

  to integrate with third-party APIs and expose internal APIs.

• Comfortable

  using Git-based workflows, pull requests, and code reviews.

• Understanding

  of distributed systems and high-availability design principles.

• Intermediate

  knowledge of protocols such as DNS, NTP, HTTP, TLS, and TCP/IP.

Nice-to-Have Skills

(Not required on day one - but willingness to learn is essential)

Network & ISP

Ecosystem

• Understanding

  of routing protocols: BGP, OSPF, route reflectors, IP anycast, MPLS.

• Experience

  in ISP, telecoms, or high-uptime environments.

Security, Encryption &

Secrets Management

• Experience

  with GPG, asymmetric encryption, or SOPS.

Observability &

Monitoring

Experience

with:

• Prometheus,

  Alertmanager

• Loki,

  Grafana

• Zabbix
• Custom

  exporters and instrumentation

Linux Internals &

Performance

• Deep

  understanding of Linux processes, networking stack, filesystems.

• Performance

  debugging across application, OS, and network layers.

Configuration Management

& IaC

• Experience

  with SaltStack (ideal), Ansible, Terraform, Helm, GitOps

  workflows.

Edge & Web Services

• Experience

  with Nginx, Traefik, pm2, or similar reverse proxies and load balancers.

DNS

• Experience

  with PowerDNS (Authoritative/Recursor), dnsdist, CoreDNS.

Tools You Will Work With

You don't need to know all of

these on day one, but you should be comfortable learning them:

OS & Platform

• Debian, Ubuntu, systemd
• Docker, k3s/Kubernetes, Helm

Networking & DNS

• FRRouting (BGP/OSPF, route reflectors),

  anycast DNS

• RADIUS
• PowerDNS, dnsdist

Web / Edge

• Nginx, Traefik, pm2
• PHP, Django, Node

Configuration & IaC

• SaltStack
• GitHub, GitHub Actions
• SOPS, GPG

Observability

• Prometheus, Alertmanager
• Loki, Grafana
• Zabbix

Data Stores

• PostgreSQL, MySQL/MariaDB
• Redis, Consul

Containers &

Orchestration

• Docker,

  k3s/Kubernetes, Helm.

Release Engineering

• Experience

  building CI/CD pipelines (GitHub Actions preferred).

Documentation

• Ability

  to write internal documentation, RFCs, or technical notes.

Benefits

• Medical Aid (Discovery)
• Reduced Gap Cover Rates (Turnberry Premier)
• Retirement Annuity Contribution (Allan Gray)
• Medical Insurance (Momentum - Health4Me)
• Discounted Internet Connectivity
• Free Employee Wellness Programme (Lyra Wellbeing, formerly ICAS)
• Exposure to latest industry technologies and standards
• Lastly, a work environment that rivals the very best!

If you have not heard from us within 2 weeks of submitting your application, please consider your application as unsuccessful.