Sr Software Engineer, Mobile Platform at Legion

Bucharest, Bucharest, Romania

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Not SpecifiedCompensation

Senior (5 to 8 years)Experience Level

Full TimeJob Type

UnknownVisa

TechnologyIndustries

Requirements

7+ years in either Android (Kotlin) or iOS (Swift/Objective-C), with ability to collaborate across platforms
3+ years of exposure to CI/CD pipelines for mobile (e.g., Bitrise, GitHub Actions, Jenkins, Fastlane)
3+ years experience with designing and building APIs for Mobile consumption
Experience owning or contributing to mobile frameworks, SDKs, or libraries used across multiple apps or teams
Familiarity with release automation, versioning, and app store deployment (TestFlight, Google Play Console)
Experience with unit, integration, and UI testing for mobile apps
Experience in managing frameworks/systems e.g. Bitrise, Firebase

Responsibilities

Own and evolve core mobile frameworks, CI/CD pipelines, automation processes, and deployment strategies to accelerate development efficiency and reliability
Manage native integrations such as Push Notifications, App Security, and other platform services that are critical to mobile functionality and user experience
Collaborate cross-functionally with product managers, designers, QA, and other engineering teams to analyze, design, and deliver scalable mobile features
Participate actively in engineering processes including code reviews, design reviews, sprint planning, daily stand-ups, sprint reviews, and retrospectives
Write clean, maintainable, and efficient code that adheres to internal standards and industry best practices across both iOS and Android platforms
Drive technical decisions based on data, metrics, and real-world usage to ensure thoughtful, long-term solutions
Continuously optimize for performance, scalability, observability, and reliability across mobile applications serving millions of users

Skills

Key technologies and capabilities for this role

KotlinSwiftObjective-CAndroidiOSCI/CDPush NotificationsApp Security

Questions & Answers

Common questions about this position

Is this role remote or hybrid, and where is it located?

This is a hybrid role based in Bucharest, Romania.

What experience is required for this senior mobile engineer position?

Candidates need 7+ years in Android (Kotlin) or iOS (Swift/Objective-C), 3+ years with CI/CD pipelines for mobile, 3+ years designing APIs for mobile, experience with mobile frameworks/SDKs/libraries, release automation, testing, and managing systems like Bitrise or Firebase.

What is the salary or compensation for this role?

This information is not specified in the job description.

What does the Mobile Platform Engineering team do at Legion?

The team builds and evolves foundational capabilities powering mobile applications, enabling product teams to deliver high-quality features rapidly while ensuring performance, scalability, and security for millions of users.

What makes a strong candidate for this senior software engineer role?

Strong candidates will have deep expertise in native mobile development (Android or iOS), experience owning mobile frameworks and CI/CD pipelines, cross-functional collaboration skills, and preferred exposure to cross-platform tools like React Native or backend technologies.

Legion

Intelligent automation for workforce management

About Legion

Legion.co offers an intelligent automation platform for workforce management, specifically targeting businesses that employ hourly workers. The platform predicts demand and automatically generates optimal schedules, enhancing labor efficiency and employee engagement. It features a self-learning forecasting engine that adapts to business needs and provides gig-like flexibility for employees. Legion.co operates on a subscription model, charging businesses for access to its tools that improve labor operations and the hourly employee experience.

Redwood City, CaliforniaHeadquarters

2016Year Founded

$180.4MTotal Funding

LATE_VCCompany Stage

Enterprise Software, AI & Machine LearningIndustries

201-500Employees