Location: Remote | Level: Mid-Level

Join Over99 — Build the Future of Crypto Gaming

Over99 is one of the top 10 crypto casinos in the world and one of the fastest-growing in the world.

We operate at the intersection of crypto, gaming, payments, and high-performance technology, serving a rapidly growing global player base.

As we continue to scale, we are looking for a Mid-Level Full Stack Engineer (Backend-Leaning) to join our Core team and help build the technology powering one of the world's fastest growing crypto casinos.

You'll work across backend services, APIs, real-time systems, databases, and interactive web experiences. This is a great opportunity for an engineer who enjoys solving challenging problems, taking ownership of their work, and developing their skills while working on a product operating at significant global scale.

You'll have the opportunity to make a real impact from day one, working on systems where performance, reliability, and user experience genuinely matter.

This is a fully remote role. We value autonomy, trust, and flexibility and expect you to bring curiosity, ownership, and a strong engineering mindset wherever you work.

What You’ll Be Doing

• Build and maintain scalable backend services supporting player accounts, wallets, games, leaderboards, and other core platform features

• Develop and optimize Node.js microservices and APIs

• Work with distributed systems and event-driven architectures

• Build and maintain real-time functionality using WebSockets, Pub/Sub, and messaging systems

• Develop performant and interactive web experiences using React

• Work with PostgreSQL and Redis to build reliable, high-performance data systems

• Collaborate with product managers, designers, front-end engineers, and DevOps to deliver features from concept through to production

• Monitor and improve the performance, reliability, and scalability of the systems you work on

• Write clean, maintainable, well-tested code

• Contribute to code reviews and engineering best practices

• Help improve our CI/CD, testing, monitoring, and development processes

• Investigate production issues and contribute to effective, long-term solutions

• Take ownership of projects and features while working closely with more senior engineers on technical direction

Technologies You’ll Work With

Core Infrastructure

• React

• PixiJS

• Node.js

• TypeScript

• PostgreSQL

• Redis

• Kafka

What We’re Looking For

Must-Haves

• 3–5+ years of professional software engineering experience

• Strong experience with Node.js and backend development

• Experience building and maintaining APIs and backend services

• Good understanding of databases, ideally PostgreSQL

• Experience with React and modern front-end development

• Familiarity with real-time systems such as WebSockets

• Understanding of asynchronous and event-driven architectures

• Experience working with CI/CD and modern development workflows

• Strong understanding of software engineering fundamentals

• Ability to write clean, maintainable, and well-tested code

• A proactive mindset and willingness to take ownership of your work

• Comfortable working independently while collaborating closely with a remote team

Nice-to-Haves

• Experience in crypto or iGaming

• Background in gaming, gambling, or iGaming platforms

• Experience with Redis, RabbitMQ, or other messaging systems

• Familiarity with game networking, animations, or interactive applications

• Experience with AWS or other cloud platforms

• Experience with Docker, Kubernetes, or ECS

• Experience with PixiJS or similar rendering/game frameworks

• Experience working with high-traffic or high-throughput platforms

Why Join Over99?

Work on a Product That’s Already Winning

Over99 is already a top 10 crypto casino globally and one of the fastest-growing in the world.

You'll be joining at an exciting point in our growth — with an established product, a rapidly expanding player base, and plenty of interesting technical challenges ahead.

Build Technology at Scale

Our platform handles real users, real-time interactions, and high-volume transactions around the clock.

The engineering challenges are real and the work you do will directly impact a product used by players around the world.

Grow With the Company

As a mid-level engineer, you'll have the opportunity to work alongside experienced engineers, take increasing ownership, and develop your technical skills in a fast moving environment.

We want people who are ambitious and want to grow with us.

Make an Impact

We keep teams lean and give engineers meaningful ownership. Your work won't disappear into a massive organization, you'll be able to see the direct impact of what you build.

Remote by Design

We're a remote first company built around trust, autonomy, and flexibility.

We care about what you achieve, not where you work or how long you are online.

What You’ll Get

Competitive Salary: We pay competitively for great engineering talent

Remote-First Work Environment: Work remotely and collaborate with a global team

Generous Holiday Allowance: Take the time you need to rest and recharge

Flexible Time Off & Hours: We focus on output and impact, not clocking in

Performance-Related Bonus: Make an impact and share in the upside

Ready to Build with Over99?

If you're a mid-level engineer looking for your next challenge, want to work with modern technology, and are excited by the opportunity to build products at global scale, we'd love to hear from you.

Join Over99 and help us build the next generation of crypto gaming.

Requires 3–5+ years of software engineering experience, strong Node.js and backend development, API and database experience, React, real-time systems, CI/CD, testing, and independent remote collaboration.

Key Responsibilities

• building services
• developing APIs
• monitoring systems

Skills & Tools

React, PixiJS, Node.js, TypeScript, PostgreSQL, Redis, Kafka, WebSockets, Pub/Sub, CI/CD, RabbitMQ, AWS, Docker, Kubernetes, ECS

Job Details

• Category: Software Development
• Seniority: Mid Level
• Commitment: Full Time
• Workplace: Remote — Berlin, Berlin, Germany
• Languages: English

Benefits

• Generous paid time off

About Over99

A global crypto gaming company operating a high-performance online casino platform. — Industry: Information Technology