Top 1464 Senior Ui Engineer Jobs

Senior iOS SDK Engineer
Everforth —Los Angeles, CA
- $250,000 - $380,000 a year
- Full-time
- Remote
- APIs
- Fair chance
- Senior level
- Dental insurance
- Parental leave
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Senior iOS SDK Engineer
Everforth —Los Angeles, CA
- $180,000 - $275,000 a year
- Full-time
- Remote
- US work authorization
- APIs
- Fair chance
- Dental insurance
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Trivelta —Remote
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Web Application Developer - Senior: TS required to apply; Washington DC + Hybrid
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Sr. PM - Agency Custom Software / Web Development
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Senior Software Developer - Web
Uline —Pleasant Prairie, WI
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Senior React Native Developer
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- Contract
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Stafford Technology —Worthington, OH
- $45 - $52 an hour
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Senior Web Developer
Digital Local & Home Services, LLC —Edina, MN
- $70,000 - $75,000 a year
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Senior Software Engineer - Bruin Platform Full Stack
MetTel —New York, NY
- $150,000 - $180,000 a year
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CACI —Chantilly, VA
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- Full-time
- 7 years
- Computer Science
- Research
- Health insurance

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Senior iOS SDK Engineer

Everforth -
Los Angeles, CA

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Job Details

Full-time
$250,000 - $380,000 a year

Benefits

Internet reimbursement
Unlimited paid time off
Dental insurance
Parental leave
Vision insurance

Qualifications

iOS
Git
Continuous integration
APIs
DevOps automation
Multithreading
Production troubleshooting

Full Job Description

Senior iOS SDK Engineer

Job title: Senior iOS SDK Engineer

Salary: $250-$380k/year CAD
Location: 100% REMOTE

Requirements: Experience building and shipping customer-facing, externally consumed SDKs, Swizzling, Memory management, Multi-threading

Founded by one of the Scopely founders (~$5B exit in 2023 with 8 #1 games including MonopolyGo, Scrabble, Yahtzee, and Star Trek), we are a growth-stage Series B startup that's modernizing full-stack observability. We're backed by NEA, YCombinator, Greycroft, the founders of Testflight, Parse, and PagerDuty, and executives from AppDynamics, MoPub, Doordash, and Uber.

We are the evolution of real-user monitoring (RUM) built on OpenTelemetry. Teams choose us because NO OTHER observability platforms are purpose built for frontend mobile and web teams while providing devops with the vital information they need to drive proactive & confident decisions. As we continue to grow, we need your help!

We're currently looking for a Senior iOS SDK Engineer to join our Mobile Observability team. This role focuses on building and maintaining a high-performance, open-source Swift SDK used across all Apple platforms. You'll work close to the OS to create instrumentation libraries for performance monitoring, telemetry, hang detection, and crash reporting, while collaborating with other platform teams and contributing to standards like OpenTelemetry.

What you'll be doing:

Design, build, and maintain a modular Swift SDK used across all Apple platforms.
Implement core instrumentation features including crash reporting, hang detection, performance monitoring, and telemetry capture.
Build resilient data pipelines for offline storage, batching, retries, and efficient delivery under strict mobile runtime constraints.
Shape SDK architecture and API design, ensuring clarity, stability, and long-term backward compatibility.
Debug complex platform issues involving threading, memory, lifecycle behavior, and OS/device fragmentation.
Develop capture services for networking, user interactions, and system events using frameworks like MetricKit.
Optimize performance across startup time, binary size, memory usage, and thread safety.
Collaborate with cross-platform SDK teams (React Native, Flutter, Unity) to prevent downstream breaking changes.
Contribute to OpenTelemetry alignment and upstream standards work.
Partner with Product and Customer Success to incorporate developer feedback into the SDK roadmap.

What you need for this position:

Hands-on SDK or framework experience, building libraries used by other developers.
Should be familiar with Swizzling, Memory management, & Multi-threading.
Deep knowledge of Apple runtime behavior - memory, threading, lifecycle, and startup performance.
Strong production debugging skills across diverse devices and OS versions.
API design experience, including versioning and long-term evolution.
Understanding of binary compatibility and ABI stability.
Comfort with Git and modern CI/CD pipelines.
Openness to AI-assisted engineering workflows

Bonus skills:

Familiarity with Swift macros or Swift Syntax tooling.
Knowledge of OpenTelemetry or observability concepts (traces, spans, logs).
Experience supporting multiple Apple platforms from a shared codebase.Exposure to system frameworks like MetricKit or MXDiagnostic.
Ability to work in a multi-SDK ecosystem (React Native, Flutter, Unity).
Open-source contributions.
Experience supporting external developers or SDK users.

Benefits:

Competitive base salary + EQUITY!
Unlimited PTO
Medical, Dental, & Vision Insurance
Parental leave for BOTH parents
Annual company trip :-)
Internet stipend
Home office setup
Opportunities for learning & growth

Benefits

This job was first posted by CyberCoders on 07/19/2026 and applications will be accepted on an ongoing basis until the position is filled or closed.Everforth CyberCoders is proud to be an Equal Opportunity Employer

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, sexual orientation, gender identity or expression, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, status as a crime victim, disability, protected veteran status, or any other characteristic protected by law. Our hiring process includes AI screening for keywords and minimum qualifications, and a virtual recruiter as part of the application process. A human recruiter reviews all results. Click here for details on our virtual recruiter . Everforth CyberCoders will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable state and local law, including but not limited to the Los Angeles County Fair Chance Ordinance, the San Francisco Fair Chance Ordinance, and the California Fair Chance Act. Everforth CyberCoders is committed to working with and providing reasonable accommodation to individuals with physical and mental disabilities. Individuals needing special assistance or an accommodation while seeking employment can contact a member of our Human Resources team at [email protected] to make arrangements.

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