Game Backend Developer (Mandarin Speaker) at Bitus Labs Irvine, CA

Ellenco Estágios e Treinamentos; Irvine (CA); On-site; USD 90,000 - 110,000; Full time

Benefits offered by this job

401(k)

401(k) matching

Dental

Health

Vision

Paid sick time

Paid time off

Job summary

Ellenco Estágios e Treinamentos is seeking a backend developer to design and operate services for Unity-based titles and Telegram mini-games. The role requires strong Java fundamentals and experience with AWS, with a focus on high-concurrency systems.

The successful candidate will collaborate closely with client engineers and will be based in Irvine, CA 92618. This position offers a competitive salary starting at $100,000 and includes various benefits.

Qualifications

• Strong Java fundamentals, including JVM, multithreading, and concurrent programming.
• Experience deploying and operating services on AWS.
• Ability to commute to Irvine, CA and relocate before starting work.

Responsibilities

• Design and operate backend services for Unity-based games.
• Solve high-concurrency and low-latency challenges.
• Collaborate with cross-functional partners, including game designers and QA.

Skills

Java fundamentals

WebSocket and socket.io

Netty

RESTful APIs

Protobuf or FlatBuffers

High-concurrency design

MySQL or PostgreSQL

AWS services

Fluent Mandarin Chinese

Tools

Docker

Kubernetes

Node.js

Kafka

RabbitMQ

Redis

Job description

Salary: $100,000 - $100,000 per year

Requirements

• Strong Java fundamentals, including a solid grasp of the JVM, multithreading, and concurrent programming
• Proficiency with WebSocket, socket.io, and similar real‑time communication technologies
• Hands‑on experience with Netty for high‑performance, low‑latency network applications
• Experience designing and developing RESTful APIs
• Familiarity with Protobuf or comparable serialization formats such as FlatBuffers or Thrift
• Strong understanding of high‑concurrency and distributed system design, including load balancing and horizontal scaling
• Experience with relational databases such as MySQL or PostgreSQL, plus caching with Redis
• Familiarity with common frameworks such as Spring Boot and Netty
• Experience deploying and operating services on AWS, including EC2, ECS/EKS, RDS, ElastiCache, and S3
• Strong troubleshooting and performance tuning skills
• Fluent Mandarin Chinese
• Ability to commute to Irvine, CA 92618 and relocate there before starting work

Preferred Qualifications

• Experience in backend development, especially game and real‑time service backends, is preferred
• Experience delivering and operating at least one live game or online product end to end is preferred
• Experience supporting Unity‑based games on the backend and collaborating on networking and protocol design is preferred
• Experience shipping lightweight social or instant games, such as Telegram mini‑games, including bot API, authentication, and payments, is preferred
• Proven ability to build systems that support high concurrency and large volumes of simultaneous users, such as tens of thousands of CCU, is preferred
• Experience designing real‑time communication architectures for latency‑sensitive applications is preferred
• Experience working in cross‑functional teams with client engineers, game designers, QA, and operations is preferred
• Prior experience in game backend or real‑time multiplayer projects is strongly preferred
• Familiarity with Node.js for backend services or tooling is preferred
• Experience with Telegram mini‑games, Mini Apps, or other instant and social platform games is preferred
• Familiarity with message queues such as Kafka or RabbitMQ is preferred
• Experience with Docker and Kubernetes is preferred
• Experience building matchmaking, leaderboards, and anti‑cheat systems is preferred

Responsibilities

• Design and operate backend services that power our Unity‑based titles and Telegram mini‑games
• Build real‑time communication, game state synchronization, matchmaking, and live operations capabilities
• Solve high‑concurrency and low‑latency challenges for live player experiences
• Collaborate closely with Unity client engineers on networking and protocol design
• Work with cross‑functional partners, including client engineers, game designers, QA, and operations
• Develop and support game‑specific backend systems such as matchmaking, leaderboards, and anti‑cheat
• Deploy and manage services in cloud environments and support ongoing performance optimization

Technologies

• API
• AWS
• Backend
• Cloud
• Docker
• EC2
• JVM
• Java
• Kafka
• Kubernetes
• Load Balancing
• MySQL
• Network
• PostgreSQL
• RabbitMQ
• Redis
• Spring
• Spring Boot
• Unity
• NodeJS
• GameDev

Benefits

• 401(k)
• 401(k) matching
• Dental
• Health
• Vision
• Paid sick time
• Paid time off

We are building real‑time multiplayer and social games, including Unity-based titles and Telegram mini-games, and our work directly supports live players.

This is an in‑person role based in Irvine, CA 92618.

We offer a competitive salary starting from $100,000 per year along with the benefits listed above.

last updated 27 week of 2026