Software Engineer at Vodafone UK in Bucharest, Bucharest, Romania

Who we are

VOIS (Vodafone Intelligent Solutions) is a strategic arm of Vodafone Group Plc, creating value for customers by delivering intelligent solutions through Talent, Technology & Transformation.

As the largest shared services organisation in the global telco industry with 30,000 FTE, our portfolio of next-generation solutions and services are designed in partnership with customers across Vodafone Group, local markets, and partner markets to simplify and drive growth. With our strategic partner Accenture, we work alongside our Vodafone customers, other Telco and tech companies to drive transformation, meet the challenges of our industry and ensure we stay relevant and resilient. This partnership is a unique, industry-first model which brings together the best of in-house and 3rd party capability.

We work with customers across 28 countries from 10 VOIS locations: Albania, Egypt, Hungary, India, Romania, Spain, Turkey, UK, Germany, Ireland, and with a network of teams in Czech Republic, Italy, Greece, and Portugal.

#VOIS #BeUnrivalled #CreateTheFuture

About this Role

We are seeking a Generative AI Backend Software Engineer to join our Infrastructure Engineering team in Romania. You will design and build modern, scalable back-end applications and services using Python and Django, developing RESTful APIs and data-access layers within a microservices architecture.

A key part of the role is integrating Generative AI and Large Language Model (LLM) capabilities into back-end services, including retrieval-augmented generation (RAG) pipelines, agentic workflows and AI agent tooling through APIs and MCP servers.

Alongside hands-on engineering, you will provide technical consultancy to clients, advise on suitable AI use cases and engineering best practices, and help stakeholders make informed technical decisions.

What you will do

• Design, develop and maintain high-quality, well-tested back-end services and RESTful APIs using Python and Django.
• Build and maintain scalable microservices and integrations with databases, search and logging infrastructure.
• Develop and maintain AI-enabled software capabilities, including integrations with LLM providers.
• Build and integrate RAG pipelines that connect back-end applications, data sources and LLM-based functionality.
• Develop agentic workflows and expose or consume tools for AI agents through APIs and MCP servers.
• Apply responsible AI and security practices to LLM-based functionality, including PII controls and safeguards against data leakage and prompt injection.
• Collaborate with front-end developers to define and integrate API contracts.
• Work with product managers and other stakeholders to deliver project objectives and features on schedule.
• Contribute throughout the engineering lifecycle, including planning, solution design, development, testing, deployment and maintenance.
• Review peer code for quality, performance and adherence to agreed coding standards.
• Debug and troubleshoot technical issues and implement appropriate solutions.
• Improve back-end performance through caching, query optimisation and efficient data-access techniques.
• Follow and promote established engineering practices, including version control, code reviews and continuous integration.
• Create and maintain technical documentation, operating procedures and solution or architecture designs to support effective knowledge sharing.
• Prepare and deliver knowledge-transfer sessions and contribute actively to the onboarding of new colleagues.
• Provide technical support, mentoring and guidance to colleagues across different levels of experience.
• Contribute to relevant team, departmental and organisational initiatives, including technical investigations, analysis, process documentation and knowledge transfer.

Who you are

• You have 5+ years of back-end development experience, with a strong focus on Python and Django.
• You have strong practical proficiency in Python and the Django framework.
• You have experience integrating LLM provider APIs, such as OpenAI, Anthropic or Azure OpenAI.
• You have experience designing and developing RESTful APIs.
• You have experience working with relational databases and SQL.
• You have a strong understanding of microservices architecture and integration patterns.
• You understand prompt engineering, retrieval-augmented generation (RAG), vector databases, agentic patterns and LLM output evaluation.
• You understand Agile/Scrum ways of working and are comfortable contributing within collaborative, fast-paced environments.
• You bring effective problem-solving skills, attention to detail and the ability to manage multiple priorities.
• You can communicate complex technical concepts clearly to technical and non-technical stakeholders.
• You continuously develop your technical knowledge and skills.

Nice to have:

• Understanding of containerisation technologies such as Docker and Kubernetes.
• Experience with message brokers and asynchronous or background processing.
• Familiarity with observability practices, including logging, metrics and tracing.
• Experience with testing frameworks.
• Experience with CI/CD pipelines.
• Experience with cloud platforms such as AWS or Microsoft Azure.

Not a Perfect Fit?

Concerned you may not meet every requirement? Vodafone is committed to creating an inclusive workplace where everyone can thrive. If you are excited about this role but your experience does not align exactly with every aspect of the job description, you are encouraged to apply. You may be the right candidate for this or another opportunity, and the recruitment team will support you in exploring where your skills fit best.

What’s in it for you

• Hybrid way of working
• Medical and dental services
• Life and hospitalization insurance
• Dedicated employee phone subscription
• Take control of your benefits and choose any of the below options: MEAL TICKETS/ PRIVATE PENSION/ VACATION VOUCHERS/ CULTURAL VOUCHERS within the budget.
• Special discounts for gyms and retailers
• Annual Company Bonus
• Loyalty Programme
• Ongoing Education – we continuously invest in you to ensure you have everything needed to excel on the job and enhance your skills
• You get to work with tried and trusted web-technology
• Getting in on the ground floor of a technology changing company
• We let you write your own story by planning vacations: go for a trip, experience new things, have fun and enjoy your 23 days off.
• Special Paternal Program - 4 months of paid paternity leave

What skills you will learn

This role provides opportunities to deepen and broaden your capabilities in:

• Developing scalable back-end applications with Python and Django.
• RESTful API and microservices design.
• Integrating LLM providers with production back-end systems.
• Designing and implementing RAG architectures and pipelines.
• Applying prompt engineering techniques within software products.
• Working with vector databases and retrieval approaches.
• Developing agentic workflows and AI agent tools.
• Designing integrations through APIs and MCP servers.
• Evaluating LLM outputs and AI-enabled functionality.
• Applying responsible AI and security practices, including PII controls and mitigations for data leakage and prompt injection.
• Back-end performance optimisation, caching and efficient database access.
• Technical consultancy and communicating AI concepts to non-technical stakeholders.
• Depending on project exposure, containerisation, observability, CI/CD and cloud technologies.

VOIS Equal Opportunity Employer Commitment

Vodafone recognises and celebrates the value of diversity in building a workforce that reflects the customers and communities it serves. No form of discrimination is tolerated. This includes, but is not limited to, discrimination based on race, colour, age, veteran status, gender identity, gender expression, sexual orientation, pregnancy, maternity or parental status, ethnicity, disability, religion or belief, political affiliation, trade union membership, nationality, citizenship, indigenous status, medical condition, HIV status, neurodiversity, social origin, cultural background, marital or civil partnership status, or socio-economic background.

Join Us

At Vodafone, we’re working hard to build a better future. A more connected, inclusive and sustainable world. As a dynamic global community, it's our human spirit, together with technology, that empowers us to achieve this.

We challenge and innovate in order to connect people, businesses, and communities across the world. Delighting our customers and earning their loyalty drive us, and we experiment, learn fast and get it done, together.

With us, you can be truly be yourself and belong, share inspiration, embrace new opportunities, thrive, and make a real difference.

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