OSS Design Professional - ESN

BT Group is seeking an OSS Design Professional to support the Emergency Services Network and BT’s mobile services, helping customers across EE, BT, Plusnet and ESN. This role sits in a specialist team that keeps the mobile network running smoothly by managing essential systems and data. It’s an excellent entry point for someone who wants to start a career in telecoms, with the chance to learn from experienced engineers and industry experts while contributing to tools, reporting and network solutions that boost 2G, 4G and 5G performance.

The position is based in Bristol and is onsite, with the expectation of being in the office at least three days a week. The successful candidate will be supported to grow technically, gaining hands-on experience in coding, automation and data analysis as part of a structured pathway into telecoms, network design and automation. A BPSS-level government screening is required, which includes a minimum of three years’ continuous residence in the UK.

If you’re curious, enjoy problem-solving and have a genuine interest in technology, this role offers a solid foundation for a career in telecommunications and network automation.

What This ESN OSS Design Professional Will Do

You’ll join the RAN OSS design authorities to shape and build RAN Element Managers and Trace Management tools that underpin the ESN contract. The work involves collaborating with RAN, Platform and IP Designers to ensure vendor OSS platform designs align with the demands of radio and transmission technologies. You’ll listen to both technical and business users, turning their requirements into a concrete strategy for predicting, planning and visualising RAN data. The role also involves supporting the resolution of customer issues related to RAN data, driving efficiency and scalability by re-using network designs and maintaining in-life operation across the overall network platform and customer solutions. Finally, all introduced systems must comply with GDPR and Security Policies.

The Right Candidate For BT Group's ESN OSS Design Role

• Python coding and Unix/Linux scripting (BASH, PERL)
• Knowledge of IP Networks, virtual machines and cloud based hosting solutions
• Experience of working with databases. Manipulating and interpreting multiple sources of complex data to derive technical design guidelines and strategic recommendations

• Experience with radio network infrastructure data

Pay and Practical Details For This BT Opportunity

The role is located in Bristol and requires being in the office at least three days per week. The benefits package is tailored to support growth, wellbeing and daily life. Core benefits include a 10% on target annual bonus, access to an online private GP 24/7 for you and your immediate family, market-leading paid carers leave up to two weeks off, and equalized maternity, paternity and adoption leave – 18 weeks’ full pay and 8 weeks’ half pay. There are discounts on EE and BT products, a market-leading pension scheme with 5% from you and 10% from the employer, and a holiday purchase scheme. You can also add other benefits such as healthcare, dental, gym memberships and more when you’re ready.

In addition, the role requires BPSS-level screening, which necessitates a minimum of three years’ continuous residence in the UK.

Advice For Applicants For The ESN OSS Design Role

Lead with your Python and Unix/Linux scripting experience on your resume, and feature a project where you automated tasks or built tooling for data analysis so the reader sees practical impact up front.

To prove the must-have skills, include a concrete example of working with databases and multiple data sources to inform design decisions, and highlight your knowledge of IP networks, virtual machines and cloud hosting.

In interviews, be ready to describe a time you translated business or stakeholder requirements into a technical strategy for predicting, planning and visualising RAN data, and explain how you ensured GDPR and security policies were followed.

Ask a smart question about eligibility and security, for example: how does the BPSS screening process interact with the ESN OSS design team’s collaboration across RAN, Platform and IP groups, and what timelines should applicants expect once shortlisted?