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Senior Mobile Engineer (Objective-C / Cocos - Live Game Evolution)

Remote from Spain·Added 5 months ago

This job was published 5 months ago

UserWise Services

10 open roles

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Overview

Job details

Permanent contract
Per the ad.
Fully remote
Per the ad.

Requirements

Have the right to work in Spain
UserWise Services doesn't mention sponsorship in the ad.
Work in English
English is required, per the ad.
Have senior-level experience
Senior-level role.

Pay & benefits

What you'll get

Market competitive, tax-free USD salaries
Paid Time Off
Performance Bonus
Annual Performance Reviews

Requirements

What we're looking for

Strong experience with Objective-C and iOS development
Hands-on experience with Cocos (Cocos2d-x or similar)
Experience working on live mobile games or shipped apps
Ability to navigate and improve legacy codebases
Strong understanding of performance optimization (CPU, memory, rendering)
Pragmatic mindset: you know when to refactor vs. ship
Comfortable leveraging AI tools (e.g., Copilot, ChatGPT, etc.) as part of your workflow

Nice to have

Experience with C++ (common in Cocos-based systems)
Familiarity with game loops, rendering pipelines, and animation systems
Experience migrating legacy systems to modern architectures
Exposure to analytics-driven development (A/B testing, live ops)

The role

About Us
At UserWise Services, we build and scale mobile games played by millions worldwide. Our focus is simple: move fast, deliver impact, and use modern tools-including AI-assisted workflows-to accelerate development and iteration.
We're now looking for engineers who enjoy reviving, scaling, and modernizing high-adoption live games.

The Role
You'll work on a proven, high-performing mobile game built with Objective-C and Cocos, helping evolve it for the next stage of growth.
This is not a "build from scratch" role-it's about:

Why This Role Is Interesting

Work on a game that already has traction and players
See your impact immediately in a live environment
Use AI as a force multiplier, not just a buzzword
Solve real engineering problems-not just greenfield abstractions

Who This Is For

Engineers who enjoy fixing, improving, and evolving real products
People who like high ownership and fast execution
Builders who prefer impact over perfection

What you'll do

Improving a live product with real users
Making smart, high-leverage technical decisions
Using AI tools to accelerate development, debugging, and refactoring

What You'll Do

Maintain and extend a legacy Objective-C + Cocos codebase
Optimize performance, memory usage, and runtime behavior for mobile
Refactor and modernize systems without breaking live operations
Ship features, events, and improvements in a live-service environment
Use AI-assisted workflows (code generation, debugging, refactoring, test creation) to move faster
Collaborate closely with product, design, and analytics to drive impact
Identify quick wins vs. deep tech improvements and prioritize accordingly

About UserWise Services

UserWise Services is a technology services company specializing in mobile gaming, offering expertise in game development, product management, and data analytics. The company operates globally, with a focus on supporting game studios in optimizing their live operations and player experiences. Their team works across engineering, product, and data disciplines to deliver high-impact solutions for the gaming industry.

Based in Barcelona, Spain, UserWise Services has established a presence in one of Europe's key tech and gaming hubs. The company's work culture emphasizes collaboration and innovation, making it an attractive option for international professionals looking to contribute to the mobile gaming sector. With roles spanning product management, engineering, and data analysis, UserWise offers opportunities for skilled individuals to work on live game evolution and player-centric projects in a dynamic, multicultural environment.

Employees: 40
Headquarters: Barcelona, Spain
In Spain: Barcelona
Website: userwise.io

Good to know if you are moving

Based in Barcelona, a major European tech and gaming hub, offering a vibrant lifestyle and strong professional network.
Focus on mobile gaming provides opportunities to work on live game operations and player engagement projects.
Roles include product management, engineering, and data analytics, suitable for specialists in the gaming industry.
International team environment likely, given the global nature of the gaming sector and Barcelona's diverse workforce.

All open roles at UserWise Services