Senior Backend Engineer

Location: Athens

Seniority level: Senior

Office requirement: Flexible-first/ Hybrid

Employment type: Permanent/ Employee

Language: All stages of the recruitment process will be conducted in English

At GWI we’re always looking for extraordinary people who thrive on making an extraordinary impact. Right now we’re looking for a Senior Backend Engineer to play a key role in our Software Engineering Department in Athens. If that’s you, and making a difference gets you out of bed in the morning, keep reading. It could be the start of something, well, extraordinary.

Sounds great, what will I be doing?

As our Senior Backend Engineer you'll contribute to building and optimizing the APIs and backend services that empower our clients to enhance their experiences. The role is perfect for someone who enjoys working on technicallly challenging projects, delivering high quality solutions, and collaborating closely with team members to drive results.

It’s also fun; shaking things up is what working for a growing company is all about. So you’ll need to be flexible, comfortable with continuous change, and working in a high-tempo environment as we grow.

What do I need to bring with me?

You’ll need to be able to demonstrate the core skills this role requires. You don't have to tick all the boxes right away; the important thing is that you’re willing to learn. Here’s what the team will be looking for:

Proven backend development experience: Strong proficiency in programming languages such as Go, Java/C#, Ruby, or Node.js, with a track record of building efficient and reliable backend systems

API development expertise: Familiarity with API design principles, including authentication (OAuth, JWT), versioning, error handling, rate limiting, and security best practices

Collaborative mindset: Ability to work effectively within a team, taking direction, sharing knowledge, and contributing to the success of joint projects

Focus on quality and testing: Hands-on experience with Test-Driven Development (TDD) and ensuring high standards in code quality and reliability

CI/CD familiarity: Understanding of continuous integration and deployment automation concepts to streamline development workflows

Adaptability and resilience: Comfortable navigating changing requirements and fast-paced environments, with experience working in Agile settings using tools like JIRA and Git

Equally important is attitude. We want people who think big (to make an impact), ask why (to find a better way), and show respect (to everyone, at every level, all the time). Those are our values, exemplified by our leadership team, and they’re a big part of what we’re looking for in you.

Interview steps

Preliminary phone call with the Talent Team (no video required)

First video interview with the hiring managers

Second (and final*) video interview with the hiring panel, often including a presentation, followed by a values conversation with members of the wider GWI community.

• Don’t be alarmed if there are other stages in the process, it’s all part of the plan for some of our roles.
  
  
  

What exactly is GWI?

GWI is modernized consumer research; global, on-demand, and accessible to everyone, not just data experts. Our platform is designed for companies looking for fresh and insightful data about their consumers’ values, purchase journeys, media usage, and social media habits.

With data representing the views of nearly 3 billion people across 52+ countries, GWI has become the go-to for agencies, brands, and media companies that want to know what really drives their audience to action.

Since launching in 2009 we’ve grown at a healthy pace, and to maintain this growth we need more extraordinary people. Hence this ad. Hence you.

What’s in it for me?

You’ll do the sort of work that got you excited about your career in the first place - not as a cog in a machine, but as an individual whose contribution matters. So gigantic job satisfaction comes as standard, but it’s only part of the package. You’ll also get:

Global benefits :

Tons of days off: 25 days annual leave | End-of-year office closures

More than a great salary: Employee share scheme | Private health insurance

Great work-life balance: Flexitime | Early Friday finishes | Work-from-anywhere options | ‘Work from home’ budget

Family-focused flexibility: Carer days | Enhanced parental leave | Private insurance for your family

A commitment to YOU: Accredited learning programs | A commitment to mental and physical health | Reward and recognition programs | Career development opportunities

A commitment to the community: DE&I committee | Volunteer options | 100% donation matching | Payroll giving options

Location-specific benefits :

Employee share scheme/options

Generous training budget, including a fully paid international conference each year for Engineering and Data Science roles

Mobile phone contract and restaurant ticket options

Private health insurance plan

Put all that together and GWI is the friendliest, most fulfilling place any of us has ever worked.

Diversity, Equity & Inclusion

We take DE&I seriously. Not only is it obviously the right thing to do, it’s also the bedrock of our value of show respect and at the heart of our company culture.

We’re a global data business, so it’s essential our data reflects the global reality. Putting diversity into practice like this literally makes our business stronger. That’s why we strive to make our offices - and our teams - as diverse as our data. Want to know more? Take a look at our Life page on LinkedIn to learn more about our DE&I initiatives. The point is, GWI is a place where you can genuinely feel at home, express yourself, and make your mark - whoever you are.

As a Disability Confident employer, we encourage applications from disabled candidates and are dedicated to providing all relevant assistance during the application and interview process.

We also encourage individuals from all backgrounds, including those from underrepresented and marginalized communities, to join our team.