The Role
Owns and operates core infrastructure supporting ISP, cloud, and hosting platforms. The role builds production tooling and internal services in Go and Python, integrates APIs, develops internal APIs, drives automation, and ensures reliability, security, scalability, monitoring, and observability. Responsibilities include incident response, root-cause analysis, performance troubleshooting, documentation, cross-team collaboration, and on-call support for critical infrastructure.
Summary Generated by Built In
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
(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.
Skills Required
- Strong ownership mindset with a focus on identifying and solving root-cause issues
- Solid Linux system administration experience, preferably with Debian or Ubuntu
- Experience in SRE, infrastructure, operations, or platform engineering roles
- Production experience building and maintaining tooling or services in Go and/or Python
- Ability to integrate with third-party APIs and expose internal APIs
- Comfort using Git-based workflows, pull requests, and code reviews
- Understanding of distributed systems and high-availability design principles
- Intermediate knowledge of DNS, NTP, HTTP, TLS, and TCP/IP
- Understanding of BGP, OSPF, route reflectors, IP anycast, and MPLS
- Experience in ISP, telecoms, or high-uptime environments
- Experience with GPG, asymmetric encryption, or SOPS
- Experience with Prometheus, Alertmanager, Loki, Grafana, Zabbix, custom exporters, or instrumentation
- Deep understanding of Linux processes, networking stack, and filesystems
- Performance debugging across application, operating system, and network layers
- Experience with SaltStack, Ansible, Terraform, Helm, or GitOps workflows
- Experience with Nginx, Traefik, pm2, or similar reverse proxies and load balancers
- Experience with PowerDNS, dnsdist, or CoreDNS
- Experience building CI/CD pipelines, preferably with GitHub Actions
- Ability to write internal documentation, RFCs, or technical notes
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The Company
What We Do
RSAWEB is a South African internet service provider and technology company serving residential and business customers. It delivers fibre and other connectivity services alongside cloud infrastructure, mobile data management, security, IoT, and related digital solutions. The company positions itself as a technology partner, using its network and data-centre infrastructure to help customers increase revenue, manage risk, and control costs.
