Senior Backend Software Engineer (Go)

💼 Seniority level: Mid-Senior

🏙️ Office requirement: Flexible-first/ Hybrid 1 per wk in office

📝 Employment type: Permanent/ Employee

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

As our Senior Backend Software Engineer you’ll:

As our API Senior BackEnd Engineer you’ll help build and optimize the APIs and backend services that power our products and enhance our clients’ experiences. This role is ideal for someone who enjoys technically challenging problems, cares deeply about quality, and likes working closely with others to deliver meaningful results.

You’ll be part of a talented engineering team, designing and implementing backend systems that are robust, scalable, and secure. You’ll take ownership of APIs throughout their full lifecycle, from design and development to testing, deployment, and continuous improvement.

Our backend stack is centered around Go for its performance and scalability, and Google Cloud, allowing us to leverage modern cloud infrastructure and services

What do I need to bring with me?

You’ll need to be able to demonstrate the core skills this role requires. Here’s what the team will be looking for in you:

👉 Proven experience building backend systems using Go or similar languages (e.g. Java, C#, Ruby, Node.js)
👉 Strong understanding of API design principles, including authentication, versioning, error handling, rate limiting, and security best practices
👉 Experience developing and maintaining production APIs with a focus on reliability and performance
👉 A quality-first mindset, with hands-on experience in testing practices such as TDD and writing well-tested code
👉 Familiarity with CI/CD concepts and deployment automation
👉 Experience working in Agile environments, using tools like Git and Jira
👉 A collaborative approach, with the ability to communicate clearly and work effectively within a team
👉 Good judgment, a strong sense of ownership, and accountability for your work
👉 Interest or experience working with AI-enabled products, agent-based systems, or integrating APIs with LLM-driven tools (direct experience with MCP is a plus, not a requirement)

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, and they’re a big part of what we’re looking for in you.

Why Join Us

👉 Work on products and APIs used by leading brands around the world
👉 Be part of a collaborative, supportive engineering culture that values quality and ownership
👉 Tackle meaningful technical challenges at scale using modern technologies
👉 Grow your skills and career while making a real impact at GWI

What We Offer

At GWI, you’ll find meaningful work, visible impact, and a culture that empowers you to do your best. Our package includes:

• Time to recharge – 25 days’ annual leave and office closures over the holidays.

• Health & wellbeing – Private insurance for you and your family, plus mental and physical wellbeing support.

• Financial benefits – Competitive salary, reward and recognition programs, and payroll giving options.

• Flexibility & balance – Flexitime, early Friday finishes, work-from-anywhere freedom, and a “work from home” budget.

• Family first – Enhanced parental leave and carer days so you can prioritise what matters most.

• Career growth – Accredited learning, a generous training budget, and a fully paid international conference each year for Engineering and Data Science roles.

• Community & impact – DE&I committee, volunteering opportunities, 100% donation matching, and ways to give back locally.

• Extra perks – Mobile phone contract and restaurant ticket options for added convenience.

Diversity, Equity & Inclusion

Diversity is fundamental to who we are—both as a data company and as a workplace. Our data reflects global realities, and so must our teams. We strive to ensure our workforce is as diverse and inclusive as the insights we provide to our clients.

As a Disability Confident employer, we welcome applications from disabled candidates and are committed to providing all necessary adjustments during the hiring process. We also actively encourage applications from underrepresented and marginalized communities.

At GWI, you will find a place where you can contribute meaningfully, grow professionally, and belong fully.

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