Principal Fullstack Developer

ENJOY Gaming is a software provider focused on creating high-quality digital entertainment experiences, including Slots and Live Games. Our team brings together experienced professionals in game development, product, and design, driven by a passion for innovation and quality.

At ENJOY Gaming, we value ownership, excellence, and drive. These principles shape the way we work, collaborate, and build products.

Join us and be part of our innovative journey in the gaming world!

We are looking for a Lead Full-Stack Engineer with a passion for creative game design and systems engineering. You won't just be pulling tickets from a backlog: you'll be the technical authority for our products. You will lead two completely different engineering ecosystems: the highly optimized, memory-sensitive world of game clients and the backend infrastructure. You will bridge the gap between creative vision and technical reality, ensuring that the incredible experience enjoyed by players is powered by a robust, secure and scalable backend.

Requirements

What You Will Do

E2E Game Architecture: Design, implement, and maintain complete game features. You will seamlessly integrate scalable server-side backend services with high-performance client-side gameplay and UI logic

Decoupled Systems: Design a flexible, modular backend that efficiently serves data to various frontend game clients, ensuring seamless integration regardless of the client engine used

Full-Stack Optimization: Balance performance across the entire product. Optimize server-side load management and database queries while simultaneously managing client-side memory and frame rate stability across a wide range of devices

Unified Observability: Implement robust real-time data collection, logging, and crash reporting, to track the user journey from client-side actions to back-end server responses

System Health & Proactive QA: Monitor the entire stack to swiftly detect, diagnose, and resolve cross-domain issues - whether they originate as client-side crashes or backend server bottlenecks

Security & Risk Mitigation: Implement E2E security protocols for secure client-server communication. Protect sensitive user data on the server while deploying client-side risk mitigation, such as anti-cheat mechanisms and exploit prevention

Act as the Technical Translator: Serve as the core bridge connecting UI/UX designers, Game Designers, and engineering leadership. You will help translate creative requirements into actionable code while ensuring the backend can support those designs

Elevate the Team: Mentor developers in modern client-side and backend techniques, fostering a culture of high-quality code and technical ownership

Set the Standard for Documentation: Create and maintain a unified knowledge base covering both sides of the stack - from API specs and server infrastructure to engine integration manuals

Drive Agile alignment: Holistically scope features during sprints, ensuring technical requirements align with business goals while actively managing and reducing technical debt

What to Expect

Strong Planning and prioritization: You will organize the plan so that you and the team can seamlessly shift gears from optimizing a memory allocation issue in the morning to designing a stateless architecture handling thousands of concurrent players in the afternoon

Stakeholder management: You will work with product owners and game designers to translate their vision into technical reality, reviewing mechanics and proposing a viable, performant alternative

Architecture engineering: You will marshal monitoring telemetry to ensure the servers stay up during massive traffic spikes and adjust the approach to facilitate high availability

Product engineering: You will balance the demands of shipping features fast against the necessity of keeping the codebase clean, scalable, and modular

Who You Are

6+ years of development experience and 1+ year of leadership experience

iGaming/Gambling experience will be a huge plus

Proven Full-Stack Expertise

Deep professional experience in both game client development and scalable server-side backend architectures

High Tolerance for Complexity

You are comfortable diving into ambiguous problems and designing systems from the ground up

Proactive Problem Solver

You find and fix memory leaks, architecture flaws, or security vulnerabilities before they ever impact a player

Exceptional Communicator: You can explain complex backend constraints to non-technical stakeholders and break down creative requirements into clear engineering tasks

Experienced Leader: You have a track record of mentoring engineers, driving architectural decisions, and leading projects through the full software development lifecycle

Nice to have

Experience with Python

Stack

Languages

TypeScript, JavaScript (), React,

Frontend Graphics & Animation

WebGL rendering, 2D skeletal web animation

Real-time Communication & Messaging: WebSockets, Event streaming brokers, Remote Procedure Calls

Video Streaming: Ultra-low latency (sub-second) video streaming architecture utilizing WebRTC, WHIP, RTMP, and SRT for real-time ingest, combined with H5Live, Low-Latency HLS, MoQ, and ABR for global browser-based playback

Databases & Storage

Relational (SQL), Document (NoSQL), In-memory caching, Columnar/Analytics databases

Infrastructure & Orchestration: Cloud infrastructure, Containerization, Container orchestration

CI/CD & Automation

Automated CI/CD pipelines, API integrations

Observability & Monitoring

Distributed telemetry, Log aggregation, Time-series monitoring dashboards

What We Offer

Competitive Salary in EUR

with annual performance reviews to recognize your growth

Flexible Remote Work

balance productivity and comfort

Comprehensive Benefits

including medical insurance, psychologist support and Polish, Slovak speaking clubs

Generous Paid Time Off

20 working days of paid vacation, plus 10 additional paid days off, 10 paid sick days, and all