Senior Backend Engineer

hackajob*
is collaborating with
Virgin Media*
to connect them with exceptional tech professionals for this role.
Full / part time : Full time

Business area : Tech, Software

Location : Uxbridge (can be remote with monthly office visits)

A Bit About Giffgaff
Do you want to join a connectivity provider that's up to good? At giffgaff we do mobile &

broadband differently. We call out the bad and find a better way. We're laser-focused on

flexibility, value and mutual good.

And we're so proud to be a certified B Corp. This means we've joined a network of more

than 1,000 UK companies, who want to make a positive impact on people and the planet.

Working at giffgaff is something you could be proud of too.

You'll get the best of both worlds, the energy and fast pace of giffgaff, plus all the benefits

that come with being part of our parent company, Virgin Media O2.

Our business model is unique. We work with our members (our customers) to

understand their needs in all areas of the business. We love this highly collaborative

approach. Over the past few years our member base has grown steadily, and we're still

going. We're always looking to acquire new members, and to do that we need the best

people in our team.

Our bright and modern gaff is in Uxbridge, in leafy West London. But if commuting isn't

your favourite, most of our roles can be hybrid or work from home, or anywhere in

between. If you like coming in, you'll always find some office buddies. And if you like big

occasions, we really bring the office to life monthly for our themed culture days. Plus

all our giffgaffers come together at our legendary giffgaff summer, birthday and

festive celebrations.

The role and the team

You'll join a high-performing team that's focused on delivering a best-in-class

broadband experience for our members (that's what we call our lovely customers),

enabling them to have access to our shiny new broadband offering, featuring no long

contracts, fast, dependable full fibre and symmetrical speeds to name a few

awesome features.

We strive for an outstanding member experience in all areas of giffgaff, so we are

looking for a passionate and enthusiastic software engineer who cares about the

quality of their work and how the software and services they create will positively

impact members. We're constantly looking for ways to improve and evolve how we

solve problems, driven by new, modern practices and challenging the status quo.

You will work in a cross-functional team with like-minded people to ensure this

product is successful and sustainable. We work with many teams at giffgaff, including

various partners and associates we rely on, to ensure we're active and engaged with

our engineering community, improving our ways of working and maintaining a high

standard and quality of products we create.

Our Tech Stack

• Server-side: Java 21, Maven, Spring Boot, JUnit.
• Client-Side: Typescript, , React and various React ecosystem tools and

libraries

• Infrastructure: AWS, Kubernetes, Terraform, Kafka, DynamoDB, PostgreSQL,

Redis, ElasticSearch, Kibana, Grafana, and Prometheus.

However, you should be comfortable using a variety of frameworks, languages, and

tools and be happy to learn new skills when the need arises.

Key Responsibilities

• Work with a full-stack attitude within a self-organising, cross-functional

product engineering team, using extreme programming practices, notably pair

programming and test-driven development.

• Build, support and maintain automated, fault-tolerant, scalable products and

solutions continuously delivered into our production environment.

• Leverage your experience and skills to assist your team in establishing the best

architecture for your products and services.

• Be technically curious, proactive and able to produce solutions your

colleagues can use, maintain, and learn from.

• Know how to develop and follow a sense of purpose. Identify improvements in

the software that you use and build. Accept feedback and adapt to your team

and the company's current priorities.

The Must Haves

• Test Driven Development, Pair Programming, Clean Code & Refactoring,

System Design

• Observability, "you build it you run it" attitude
• Product mindset
• Good communication, giving and receiving feedback

Desirable Skills

• Event-Driven Architecture; SOLID principles; microservices; micro-frontends
• Experience in payments/financial systems