Mobile SDK Platform Engineer (Onsite - SF) at Seam (S20)
$130K - $200K  •  
API for IoT Devices
San Francisco, CA, US
3+ years
About Seam

Seam is an API for controlling a wide range of IoT devices.

Today we primarily focus on door lock and access systems. Our customers span industries, such as hospitality, real-estate, networking equipment, or even last-mile delivery, and range in size from startups-in-garage to public companies.

Across the board, their goal is the same: use code to control hardware devices, and orchestrate the physical world.

Our team is made of alums from Nest, Sonder, Stanford, Apple, Latch, Berkeley, YC, and more. We shipped millions of IoT devices and built dev tools used by every developer on earth. We are advised by the amazing Bunnie Huang and backed by Tiger Global, Root VC, founders and execs at Stripe, Plaid, and Airbnb, and other amazing angels and funds.

About You

We generally seek "sharp minds with kind souls." We prefer generalists over specialists; we move quickly, with purpose; we enjoy working with each other and aim to be the best.

About the role

Who we are

About Seam

Seam is building a platform for software developers to connect and manage smart devices in buildings, like locks, thermostats, and intercoms. It provides a way for software applications, like Airbnb, Zillow, and WeWork, to easily interact with and control these devices across various brands and technologies, streamlining the process of building and scaling smart home and building applications.

Seam is backed by Tiger Global, Root VC, founders and execs at Stripe, Plaid, and Airbnb, and other amazing angels and funds. 🚀

About the team

The Seam Mobile SDK allows developers to build mobile applications that communicate with smart devices via Wi-Fi, Bluetooth, and NFC. Our goal is to develop SDKs in various languages including Swift, Objective C, Kotlin, and Java. We also aim to create a code generation framework to produce SDKs and documentation snippets.

Seam was founded to make it easier for developers to automate the physical world. We are dedicated to providing a world class experience for developers using our API and SDKs. While we’ve solved a small part of that problem, our ambition is to go much further.

What you’ll do

We are seeking an experienced Mobile Developer skilled in iOS or Android development. You should have a background in Mobile SDK development and BLE technology, and be comfortable with our Node.js, TypeScript, and PostgreSQL stack.

As the first dedicated mobile developer at our company, you will play a key role in designing our Mobile SDKs and mentoring our engineers in mobile development. You will work closely with our engineering team to improve developer productivity, streamline build processes, and enhance the overall developer experience.

We play with a lot of hardware and spend a lot of time thinking about developer UX. We like written communications. We prefer to keep things simple and don't overthink first implementations. You should generally be curious, comfortable with the unknown / experimentation, and be able to move fast.


  • Design, build, and maintain Android or iOS SDKs that interact with BLE and NFC.
  • Enable IoT mobile applications across various mobile devices.
  • Contribute to the development and optimization of the Seam API, working with Node.js, TypeScript, and PostgreSQL.
  • Collaborate closely with our engineers, product managers, and designers to define requirements and deliver end-to-end solutions that meet business needs.
  • Lead testing initiatives to maintain high code quality and reliability.
  • Develop resources such as documentation and tutorials to support developers.

Who you are


  • 4+ years of experience in Mobile Development.
  • Expertise in iOS or Android app development using Swift or Kotlin.
  • Proficient in Node.js, TypeScript, and SQL.
  • Skilled in Mobile SDK development, building pipelines, and CI/CD processes.
  • Proficient in backend testing methods and tools (unit tests, integration tests, API testing).
  • Track record of enhancing development processes and productivity.
  • Ability to work in-office at least 50% of the time in San Francisco.

Preferred Qualifications

  • Experience with BLE and NFC technologies on iOS or Android.
  • Background in growth-stage and larger companies.
  • Interest or experience in IoT, hardware integration, or similar areas.


  • react/nextjs, and some Python & Ruby here and there.
  • postgres
  • running on Vercel with some workers on

Other jobs at Seam

fulltimeSan FranciscoFull stack$130K - $200K3+ years

fulltimeSan Francisco, CA, USFull stack$130K - $200K3+ years

Hundreds of YC startups are hiring on Work at a Startup.

Sign up to see more ›