Junior OSS Automation Developer - ESN (Assembly, Bristol, United Kingdom)

Junior OSS Automation Developer – ESN (Assembly, Bristol, United Kingdom)

Job Req ID:50900

Posting Date:08/09/2025

Function:ESN Networking

Location:Bristol

Why this job matters

The Emergency Services Network (ESN) is a huge strategic priority for BT and our commitment to do the best for our customer and our country. ESN will be one of the most advanced Emergency Services Networks in the world. and BT is proud to the official supplier providing mission critical and trusted communications for Britain’s Emergency Services. The ESN will replace the existing Airwave network and building upon on EE’s existing 4G network and to provide essential new voice, data services, and critical communications services to 300,000 members of frontline emergency service users.

Are you passionate about coding and network design, and seeking an entry level Developer role? Join a team where your Python skills and OSS design experience will directly impact millions of customers across BT, PlusNet, EE, and the Emergency Services Network. You'll collaborate with experts to design and deliver cutting-edge OSS solutions, including layer 3 trace management and geolocation systems. As you grow, you'll help build automation and data-driven tools that optimise mobile network performance and elevate customer experience.

The successful candidate will be cleared to BPSS (or equivalent) as a minimum. You may even be required to undergo National Security Vetting (e.g. CTC, SC or NPPV).

What you’ll be doing

• Whether you're writing code, visualising network data, or solving real-world challenges, you'll be at the heart of innovation in one of the UK's most critical infrastructure teams
• You will develop your knowledge of RAN by working alongside your OSS Design colleagues to super charge your code to automate the network
• In time you will be able to ensure vendor OSS platform designs, meets the changes introduced by the evolving radio technologies
• Gather user requirements (both technical and non-technical) and propose solution strategies for predicting, planning and visualising RAN data
• Increase your wider business and mobile network knowledge, with more opportunities to collaborate on projects with other teams in and outside of the department

The skills you’ll need

Network Delivery

Technical Documentation

Network Integration

Decision Making

Growth Mindset

What we would like to see on your CV

You’re confident writing clean, efficient Python code and have solid experience with Unix/Linux scripting (BASH, PERL)
• You’ve worked with operating or building mobile networks. You may even have exposure to Network Element Management platforms like Nokia MantaRay NM, Ericsson ENM, Cisco EPNM OSS or other OSS tools
• Ideally, you’ll have foundation knowledge of the Radio Access Network and it’s OSS architecture
• You’re familiar with IP networks, virtual machines, and cloud-based hosting environments, and you’ll know how to make them work together
• Any experience with AWS, Azure, or other cloud platforms would be beneficial. If you’ve built or deployed anything in the cloud, this would be beneficial

Benefits

At BT, we entertain, educate, and empower millions of people every single day. We’re a brand built on connecting people – whether that’s friends, family, businesses, or communities. Working here, you’ll receive an attractive salary and a range of competitive benefits, but – more than that – you’ll be joining an ambitious organisation with a culture of togetherness, collaboration, and inclusivity, that takes a genuine and proactive interest in your progress and development.

• 10% on target annual bonus
• BT Pension scheme, minimum 5% employee contribution, BT contribution 10%
• X4 Salary Life Assurance
• Huge range of flexible benefits including Cycle to Work, Healthcare, Season Ticket Loan, Electric Vehicle Salary Sacrifice
• 25 days annual leave (not including bank holidays), increasing with service
• From January 2025, equal family leave: receive 18 weeks at full pay, 8 weeks at half pay and 26 weeks at the statutory rate. It’s for all parents, no matter how your family is made up.
• Enhanced women’s health support: including help with menopause symptoms, cancer screenings, period care and more.
• 24/7 private virtual GP appointments for UK colleagues
• 2 weeks paid carer’s leave
• World-class training and development opportunities
• Option to join BT Shares Saving schemes
• Discounted broadband, mobile and TV package
• Access to 100’s of retail discounts including the BT shop

Flexible Working
This role offers a 3 together, 2 wherever working model. This means you are required to be at your contractual location 3 days a week with 2 flexible days per week.

With over 175 years of heritage, BT is now the flagship business brand of BT Group. We’ve brought together our best people and capabilities into a B2B powerhouse serving 1.2 million business customers internationally.

We’re a global leader for secure connectivity and collaboration platforms for businesses of all shapes and sizes, from big household names and government departments, right through to sole traders and new start-ups. But it’s not just the technology that matters, it’s what it can do to help them build stronger, smarter, more secure businesses.

We value diversity and inclusion and believe in making a positive impact. We connect for good by championing digital inclusion and equipping people, businesses, and communities with digital skills to thrive.

As a member of our team, you will be part of an organisation that celebrates difference, fosters innovation and provides you with opportunities to be your best. With millions of businesses relying on us daily, joining BT means you can be part of a diverse and multi-skilled team that makes a significant impact to society.

A FEW POINTS TO NOTE:

Although these roles are listed as full-time, if you’re a job share partnership, work reduced hours, or any other way of working flexibly, please still get in touch.

We will also offer reasonable adjustments for the selection process if required, so please do not hesitate to inform us.

DON'T MEET EVERY SINGLE REQUIREMENT?

Studies have shown that women and people who are disabled, LGBTQ+, neurodiverse or from ethnic minority backgrounds are less likely to apply for jobs unless they meet every single qualification and criteria. We're committed to building a diverse, inclusive, and authentic workplace where everyone can be their best, so if you're excited about this role but your past experience doesn't align perfectly with every requirement on the Job Description, please apply anyway – you may just be the right candidate for this or other roles in our wider team.