Senior Backend Engineer; Gaming Croatia

It’s an exciting time to join us! We’re entering new markets, developing new technologies, and moving step by step towards our goal of exciting the world. As our business grows, the number of exciting people initiatives grows with it, and we’re looking for a new colleague to partner with our team to bring these to life.

Happening powers the technology behind
Superbet’s platforms and brands
, serving millions of customers. Our
Game Integrations squad
connects third‑party providers to our core platform and ensures those experiences are
reliable, scalable, and compliant
.

We’re growing and scaling fast, and we need a
Senior Backend Engineer
who can deliver high‑quality integrations, shape engineering standards, and help accelerate how quickly new providers go live.

How we work
:

We’re product‑minded squads with strong ownership, candid feedback, and measurable outcomes. We build, run, and continuously improve the tech that powers
Superbet’s customer experience
.

Build integrations end-to-end - design contracts, implement services, write tests, and ship with confidence.

Own reliability - define SLIs/SLOs, set up observability (metrics, logs, traces), and join on‑call.

Keep systems healthy - tackle production issues, reduce tech debt, and simplify through pragmatic refactors.

Work across boundaries - collaborate with Product, Compliance, SRE, Data, Security, and external partners to keep delivery smooth.

• Level up the team - mentor more junior teammates through sharp code reviews, pairing, and knowledge sharing.

Node.js + Type Script (backend services & integrations)

REST APIs
with versioning & backward compatibility

Observability
stack → metrics, tracing, logging, dashboards, and alerts

6+ years building backend systems (ideally integrations) with
Node.js + Type Script

• Event‑driven systems (Kafka) and low‑latency/high‑throughput workloads

Solid production experience with
Kubernetes
and CI/CD pipelines

Strong background in
API design
(REST) and maintaining compatibility at scale

Ability to write
clear docs and status updates
that keep teammates aligned

• Experience with Nest.js

Gaming/fintech/e‑commerce integrations (wallets, catalogs, identity, compliance)

Experience in regulated environments with staged rollouts

Cutting
time‑to‑integrate
new providers from weeks to days

Improving
observability, testability, and reliability
at scale

Becoming a
go‑to engineer
for design and debugging while uplifting others

We are a global technology company dedicated to building the future of entertainment and fan‑centric experiences.

With commercial markets in Brazil, Belgium, Poland, Romania, and Serbia, our company has evolved from a leading sports betting and gaming operator into a diversified product and tech organization, gathering more than 5,000 dedicated people across our teams.

At Super, we are creating a unique entertainment ecosystem engaging millions of customers worldwide. Our product and technology teams in Amsterdam (the Netherlands), Madrid (Spain), Zagreb (Croatia), London (UK), and Bucharest (Romania) are building the playstack that will champion the future of play.

Our ambitious growth strategy focuses on expanding across Europe and Latin America while delivering immersive customer experiences and creating lasting value for our customers, partners, and communities.

The company’s long‑term strategy is supported by world‑class investors. In 2019, Blackstone, the world’s largest alternative asset manager, made a strategic minority investment of €175 million. In 2025, we strengthened our financial position through a €1.3 billion refinancing agreement, reinforcing our partnership with Blackstone and enabling accelerated global expansion.

Super is committed to the highest standards of compliance, safety, and responsibility. As such, we are active members of the International Betting Integrity Association (IBIA) and the European Gaming & Betting Association (EGBA).

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