UnityNYSE: U: Develops tools for games and interactive experiences.
Deep iOS software expertise with Swift, Objective-C, SDK architecture, performance optimization, and production debugging; Android concepts and Kotlin/Java familiarity required.
Sanas: Private speech AI providing real-time accent, language, and audio enhancement for enterprises and contact centers.
Strong engineering background with ability to code; experience building APIs, SDKs, developer platforms, or infrastructure products; hands-on with on-premise/private-cloud deployments; product judgment; developer empathy; willing to write code and work with customers.
Sanity: The Content Operating System for the AI era.
5+ YOE3+ MgmtRequires 3+ years of engineering leadership, 5+ years as a software engineer, deep TypeScript and React experience, and experience building libraries, SDKs, or developer tools.
Senior Software Engineer, Platform SDK / Instrument Control
San Francisco or California
$185k-$225k/yrOnsiteFull Time
Merge Labs: Private brain-computer interface research laboratory developing high-bandwidth, AI-integrated technologies for patients and broader human capability.
Deep systems engineering, hardware or instrument integration, zero-to-one software development, API/SDK design, concurrency, performance, and empathy for non-technical scientific users.
MetaNASDAQ: META: Builds technologies that help people connect, find communities, and grow businesses.
6+ YOEBachelor's degree in Computer Science or equivalent; 6+ years software engineering experience in gaming, XR, or graphics; strong programming in C++, C#, Kotlin/Java, Swift, TypeScript/JavaScript, or Python; performance profiling experience.
San Francisco or New York City or California or Colorado or Washington
$165k-$276k/yrOnsiteFull Time
AmplitudeNasdaq: AMPL: Public American software providing AI analytics tools that help businesses build better digital products and experiences.
4+ YOE4+ years professional software engineering with significant iOS experience; strong Swift and Objective-C skills; iOS internals, API design, debugging, profiling, and cross-team collaboration.
Plaud: AI note-taking hardware and software serving professionals with voice recording, transcription, and meeting-summary tools.
Experience shipping mobile features (iOS/Android), full-stack capability across client, API and backend, production use of AI coding tools, and cross-functional collaboration with product and hardware teams.
Swift, Kotlin, Claude Code, Cursor, Copilot, React Native, Flutter
Senior Software Engineer, Supercell ID (Client SDK)
Helsinki or San Francisco or Seoul or Shanghai or London
HybridFull Time
Supercell: Finnish mobile game studio developing and publishing free-to-play games for players worldwide.
Experience building consumer-facing iOS or Android applications with Swift, Kotlin, C++, or Flutter/Dart; ability to work across native and web technologies and learn unfamiliar systems.
Niantic Spatial: Independent American geospatial AI building real-world foundation models for robots, AI agents, people, and public-sector operations.
Currently pursuing BS or MS in Computer Science or related field; demonstrated experience in C++, Swift, Kotlin or other native language; strong interest in mobile development; available 4 days/week for 12-week internship in San Francisco office.
AI Engineer 5 (Gen AI SDK: Agentic AI, Guardrails, Evaluation)
New York City or San Francisco or San Jose or Cambridge or McLean +1 more
$230k-$286k/yrOnsiteFull Time
Capital OneNYSE: COF: A technology-driven bank providing diverse financial services.
6+ YOEBachelor's in CS/AI/EE/CE or related with 6+ years AI/ML experience, or Master's with 4+ years; 6+ years programming in Python, Go, Scala, CUDA, or Java.
Glean: Private enterprise AI software serving organizations with search, answers, content generation, and workflow automation.
5+ YOE5+ years of product management experience, ideally in platform, developer experience, API, SDK, or partnership products; strong technical skills and experience building scalable APIs, SDKs, integrations, and developer products.
Google Drive, Slack, Microsoft Teams, Zoom, ServiceNow, Zendesk, GitHub, APIs, SDKs, MCP, LLM
San Francisco or Toronto or Memphis or United States or Canada
RemoteFull Time
Attention Labs: AI audio software helping voice devices identify who is speaking to them before speech recognition.
Ability to code real SDK integrations, write clear technical documentation, explain complex concepts simply, listen to developers, and work independently in an early-stage environment.
San Francisco or Boston or New York City or Denver
$230k-$288k/yrHybridFull Time
Semgrep: Software security providing an application security platform that scans code for vulnerabilities, secrets, and dependency risks.
3+ YOE3+ years leading software engineering teams, strong product development experience, familiarity with agile practices, platform/API/SDK experience, and coaching/mentorship skills.
Xendit: Private Indonesian fintech providing payment infrastructure and money-movement services to businesses across Southeast Asia.
3+ YOERequires 3+ years in a client-facing technical role, expertise with APIs, webhooks, and SDKs, enterprise client experience, payment knowledge, solution architecture, presentations, and willingness to travel.
MagniteNasdaq Global Select Market: MGNI: Public sell-side advertising technology helping publishers monetize CTV, video, display, and audio inventory.
6+ YOEBachelor's degree or equivalent; 6+ years product management in digital advertising with 3+ years mobile in-app; SDK product experience; technical fluency; strong communication and analytical skills.
Composio: Private AI-agent infrastructure platform connecting developers’ agents to workplace software and APIs.
Build demos with the API/SDK, create public technical content, engage developer communities; strong coding ability and experience with LLMs/agents preferred; SF-based or open to relocation preferred.
Notion: Collaborative workspace for notes, projects, and AI tools.
7+ YOERequires 7+ years shipping production software, end-to-end feature ownership, and TypeScript fluency across backend and frontend. Developer tools, APIs, SDKs, and AI tooling experience are advantageous.
OpenAI: AI research and deployment focused on beneficial AGI.
Experience building developer-facing software such as APIs, SDKs, platforms, internal tools, or open-source projects; strong API design, communication, product judgment, and backend and web development skills.
APIs, SDKs, ChatGPT, Codex, Model Context Protocol (MCP)
Scalar: Open-source API platform for developers and companies, providing documentation, SDK generation, API clients, registries, and MCP servers.
1+ YOE1–3 years of SDR/BDR experience in B2B SaaS preferred. Requires strong writing, technical curiosity, prospect research, communication, and willingness to learn APIs, SDKs, and MCP servers.