iOS Developer

Senior iOS Developer – Mobile Engineering

📍 Remote | Full-time

📅 Experience: 6+ years

About the Company

Our client is one of the world’s fastest-growing artificial intelligence companies, focused on accelerating the development and deployment of advanced AI systems. They collaborate with top global AI research labs to enhance model capabilities across areas such as reasoning, coding, multimodal understanding, agentic behavior, multilingual communication, and deep STEM expertise.

At the core of this effort is a cutting-edge AI platform that orchestrates a global, AI-vetted talent pool of over 4M software developers, data scientists, and STEM professionals. This platform supports a wide range of use cases—such as model evaluation, supervised fine-tuning, RLHF, benchmarking, and synthetic data generation—helping companies build high-performance AI products efficiently.

Recognized by top media outlets including Forbes, CNBC, TechCrunch, and Fast Company, the company is headquartered in San Francisco and is led by experts from top tech institutions such as Google, Microsoft, Meta, Apple, Amazon, Stanford, Caltech, and MIT.

Role Overview

We are looking for an experienced Senior iOS Developer who is passionate about crafting seamless, high-quality user experiences at scale. You will play a key role in designing, developing, and maintaining native mobile applications and collaborating across teams to deliver innovative product features.

Key Responsibilities

• Design, develop, test, and maintain scalable iOS applications using Swift and Objective-C
• Collaborate with cross-functional teams including product managers, designers, and fellow engineers to define and execute business and product strategies
• Participate in the full product lifecycle including planning, development, testing, deployment, experimentation, and performance analysis
• Contribute to and uphold engineering standards, best practices, and documentation processes
• Provide mentorship and technical guidance to junior developers
• Review code, design documents, and contribute actively to product architecture and solution discussions
• Investigate performance issues, troubleshoot bugs, and implement robust solutions
• Analyze user needs and propose scalable, efficient solutions aligned with business goals

Who You Are

• You have 6+ years of experience developing production-grade iOS applications
• Expert-level proficiency in Swift and Objective-C
• Prior experience working on large-scale applications used by millions of users
• Solid understanding of software engineering principles and practices (unit testing, CI/CD, A/B testing, design patterns, code reviews, etc.)
• Comfortable working in fast-paced, remote-first environments
• Strong problem-solving, organizational, and prioritization skills
• Excellent communication and collaboration skills across technical and non-technical teams
• Bachelor’s degree in Computer Science or a related technical field (or equivalent practical experience)
• Bonus: Familiarity with GraphQL, REST APIs, and programming languages such as Python, Java, C++, or Rust