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Online Mern Stack Developer Jobs in Seattle, WA (NOW HIRING)

Worky

Senior Backend Engineer

Bellevue, WA · On-site

$150 - $200/hr

This allows games like Fortnite to utilize a combination of platform online services as well as ... As an engineer at Epic, you'll leverage deep full-stack understanding to solve complex technical ...

AIM

Senior SLAM Engineer

Seattle, WA · On-site

$100 - $125/hr

You enjoy working across the full localization stack - from designing sensor configuration ... Develop algorithms for online and offline intrinsic, extrinsic, and spatio‑temporal calibration ...

Trilon Group

Web and Digital Studio Lead

Seattle, WA · On-site

$124K - $134K/yr

Lead full-stack development of websites, web applications, dashboards, calculators, and data-driven ... Integrate GIS data and web mapping platforms (ArcGIS Online/Portal, ArcGIS Feature Services ...

ZipRecruiter

Software Engineering Manager

Seattle, WA · Remote

$140K - $227K/yr

ZipRecruiter is a leading online employment marketplace. Powered by AI-driven smart matching ... Experience developing high traffic full stack web or data applications Preferred Qualifications ...

ZipRecruiter

Software Engineering Manager

Seattle, WA · Remote

$140K - $227K/yr

ZipRecruiter is a leading online employment marketplace. Powered by AI-driven smart matching ... Experience developing high traffic full stack web or data applications Preferred Qualifications ...

ZipRecruiter

Software Engineering Manager

Seattle, WA · Remote

$140K - $227K/yr

ZipRecruiter is a leading online employment marketplace. Powered by AI-driven smart matching ... Experience developing high traffic full stack web or data applications Preferred Qualifications ...

Microsoft

Principal Software Engineer

Redmond, WA · On-site

$151K - $202K/yr

We want to reshape security and empower every user, customer, and developer with a security cloud ... We boldly pursue big ideas that power transformational advances in online security and user ...

Trilon

Web and Digital Studio Lead

Seattle, WA

Lead full-stack development of websites, web applications, dashboards, calculators, and data-driven ... Integrate GIS data and web mapping platforms (ArcGIS Online/Portal, ArcGIS Feature Services ...

OpenAI

Systems Generalist, GPT Infrastructure

Seattle, WA · On-site

$293K - $445K/yr

... inference capacity online across a diverse hardware ecosystem. About the Team The GPT ... This is a deeply cross-stack role, combining strong software engineering fundamentals with systems ...

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All JobsOnline Mern Stack Developer JobsOnline Mern Stack Developer Jobs in Seattle, WA

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How much do online mern stack developer jobs pay per hour?

As of Sep 8, 2026, the average hourly pay for online mern stack developer in Seattle, WA is $67.44, according to ZipRecruiter salary data. Most workers in this role earn between $56.06 and $77.69 per hour, depending on experience, location, and employer.

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Online Mern Stack Developer jobs near you
Infographic showing various Online Mern Stack Developer job openings in Seattle, WA as of August 2026, with employment types broken down into 1% Locum Tenens, 66% Full Time, 29% Part Time, 1% Temporary, and 3% Contract. Highlights an 82% Physical, 1% Hybrid, and 17% Remote job distribution, with an average salary of $140,275 per year, or $67.4 per hour.

Senior Game Networking Engineer

Komodo Co., Ltd.

Bellevue, WA • On-site, Remote

$117K - $161K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 15 days ago

Key responsibilities

  • Lead the design, architecture, and implementation of networking systems for a multiplayer PvP game

  • Develop and maintain client-server replication, lag compensation, matchmaking, and prediction systems

  • Collaborate closely with gameplay engineers and designers to align networking with gameplay and mechanics

Job description

About KOMODO
KOMODO is a 100% privately-owned company that has published over 120 games globally. We are now building our first fully in-house title, a competitive PVP action game focused on modernizing the shoot 'em up genre. Alongside this, we continue to expand Steam Deck sales across Asia, including the introduction of new Steam and other gaming hardware.
Supported by experienced mentors from across the industry, we are building a small and powerful team where every individual has the freedom and creative agency to make a meaningful impact. This is an opportunity to join at an early stage, where your work will directly influence core gameplay, visual identity, and overall player experience.
If you're looking for a role where your ideas matter, your contributions are visible, and you can help build something from the ground up, KOMODO offers a rare opportunity to do exactly that!
The Opportunity
KOMODO is seeking a Senior Game Networking Engineer to join the team working on Nanos, the codename for a competitive PvP action game currently in development.
In this role, you will lead the design, implementation, and maintenance of the game's networking architecture. You will ensure that multiplayer systems are responsive, stable, and optimized for fast-paced online PvP gameplay. This includes handling client-server replication, matchmaking, lag compensation, prediction systems, and networking performance optimization.
You will work closely with gameplay engineers and designers to align networking systems with gameplay mechanics and deliver a smooth, high-quality online experience. As a senior member of the team, you will provide technical leadership, define networking standards, and mentor other engineers to help grow the team's capabilities.
A successful candidate combines deep experience in multiplayer networking with strong Unreal Engine skills, a practical understanding of latency and replication challenges, and the ability to translate design requirements into robust online systems.
Responsibilities
  • Lead the design, architecture, and implementation of networking systems for a multiplayer PvP game
  • Develop and maintain client-server replication, lag compensation, matchmaking, and prediction systems
  • Collaborate closely with gameplay engineers and designers to align networking with gameplay and mechanics
  • Optimize network performance and troubleshoot latency, synchronization, and stability issues
  • Define networking standards, best practices, and documentation for the engineering team
  • Mentor junior or mid-level engineers and contribute to technical growth of the team
  • Support early production by helping establish scalable multiplayer architecture

Requirements
Requirements
  • Extensive experience in multiplayer networking for games, ideally PvP or online titles
  • Strong proficiency in Unreal Engine networking, including both C++ and Blueprints
  • Deep understanding of client-server architecture, replication, lag compensation, and prediction
  • Proven ability to lead architecture design and implement robust networking solutions
  • Experience optimizing networking for fast-paced action games
  • Strong collaboration and communication skills across disciplines
  • High proficiency in English communication
Preferred Qualifications
  • Experience shipping competitive or online multiplayer games
  • Familiarity with cross-platform networking (PC, console, Steam Deck)
  • Knowledge of network security and anti-cheat considerations
  • Experience mentoring engineers and contributing to engineering standards
Tools / Tech Stack
  • Unreal Engine (C++, Blueprints)
  • Git or equivalent version control

Benefits
  • Performance-based Profit Sharing
  • KOMODO Special Holidays ( 5-business day Summer holiday, 7 business Winter holiday, 1-day Birthday holiday, and 1 day Game Launch Day )
  • 15 days PTO
  • Full Medical, Vision, Dental
  • 401(k)
  • Group Life, AD&D
  • Free language learning classes (Japanese, English)
  • Company Events
  • A Steam Deck will be provided to employees for their employment.
  • Free Games and Manga

Some benefits will be available after the completion of the probationary period.

Apply