Senior Software Engineer

ASK4; Sheffield; On-site; GBP 65,000 - 95,000; Full time

Job summary

ASK4 is seeking a Senior Software Engineer to design, build, and operate software that powers our network platform. You will own significant workstreams, influence architectural decisions, and contribute to tooling and observability across the team.

You'll work on provisioning, monitoring, automation, and integration with various systems at scale. The role emphasizes leadership, collaboration, and delivering production-grade software for managed connectivity products.

Qualifications

• Strong OO software fundamentals.
• Production-grade PHP experience (Symfony or similar).
• CI/CD experience (GitLab CI).
• Linux systems administration & IP networking basics.

Responsibilities

• Design, build, and maintain back-end systems for ASK4's network infrastructure, including provisioning, monitoring, and automation tooling.
• End-to-end ownership of significant workstreams from requirements to production deployment.
• Drive architectural decisions, service decomposition, and integration patterns.
• Build and maintain CI/CD pipelines, Helm charts, and Kubernetes configurations for production and non-production environments.
• Integrate with network management systems, message brokers, and third-party APIs.
• Instrument and monitor applications using observability tooling (Grafana, Prometheus, Sentry).
• Provide mentorship to mid-level engineers and escalate complex problems.
• Contribute to development standards and shared tooling across engineering teams.

Skills

PHP

Symfony

Kubernetes

Go

Node.js

GitLab CI

Linux

IP Networking

OpenWrt/OpenWiFi

RabbitMQ

Kafka

Grafana

Prometheus

Sentry

Ansible

Argo CD

Tools

Helm

Job description

If you want to work on infrastructure that matters — software that keeps tens of thousands of people connected every day — this is the role for you.

About the Role

ASK4 provides managed internet connectivity and smart building technology to multi-tenant properties across Europe. Our network platform underpins homes and workspaces for residents in student accommodation, build-to-rent, and multi-dwelling properties at scale.

As a Senior Software Engineer in our Network Systems team, you'll design, build, and operate the software that keeps this platform running. From automation tooling and AI-powered network intelligence to provisioning and monitoring systems, your work will directly influence how reliably our services perform at scale.

You'll bring independent technical judgement, contribute to architectural decisions, and play an active role in raising the capability of the team around you.

Key Responsibilities:

• Design, build, and maintain back-end systems supporting ASK4's network infrastructure — including provisioning, monitoring, and automation tooling
• Take end-to-end technical ownership of significant workstreams, from requirements and design through to production deployment
• Contribute to and drive architectural decisions, including technology selection, service decomposition, and integration patterns
• Build and maintain CI/CD pipelines, Helm charts, and Kubernetes configurations for production and non-production environments
• Integrate with network management systems, message brokers, and third-party APIs
• Instrument and monitor applications using observability tooling (metrics, logs, and traces — Grafana, Prometheus, or similar)
• Provide technical mentorship to mid-level engineers and act as an escalation point for complex problems
• Contribute to development standards, code review practices, and shared tooling across the engineering teams

About You

• Strong object-oriented software development fundamentals. Comfortable with patterns and abstraction at scale
• Solid, production-grade PHP experience, ideally including Symfony or similar frameworks
• CI/CD pipeline experience (we use GitLab CI)
• Working knowledge of Linux systems administration and IP networking fundamentals
• Technical project management experience working with business stakeholders
• An inquisitive mindset and desire to learn
• Experience with Kubernetes / Helm / Argo CD in production environments
• Practical experience building and maintaining Go or Node.js services
• Experience with message brokers and event-driven systems (NATS, RabbitMQ, Kafka, or similar)
• Exposure to OpenWiFi, OpenWrt or similar open-source network controller frameworks
• Observability experience. Use of metrics, logs, and traces using tools such as Grafana, Prometheus and Sentry
• Experience with AI agent development or LLM integration
• ISP or managed connectivity background
• Automated configuration management (Ansible, Puppet, or similar)

We are committed to fostering an inclusive workplace where diversity is valued. We welcome applications from people of all backgrounds and identities and ensure fair treatment for all, regardless of protected characteristics under the Equality Act 2010.

We are happy to make reasonable adjustments throughout the recruitment process and beyond, to ensure it is accessible and fair for everyone. If you require any adjustments or would like to discuss your needs, please contact us