Sesame

Embedded Engineer

Product Engineer

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Electrical Engineer

Sesame is seeking an Embedded Systems Engineer to bring a new kind of advanced consumer electronics product to life. This role involves rapid firmware bring-up in diverse hardware environments, including Linux-based, RTOS-based, and bare-metal MCU applications. The engineer will architect, design, implement, and test embedded software, contribute to hardware design and debug, and define and improve firmware development workflows. Responsibilities also include interfacing with embedded systems from PCs or network equipment for data collection and calibration, and understanding higher-level software components for integration and optimization. The role may involve directing partners to augment embedded systems development capabilities. The ideal candidate has experience shipping complex consumer products and coordinating distributed teams.

Embedded OS Architect

<div class="_descriptionText_oj0x8_198">About SesameSesame believes in a future where computers are lifelike - with the ability to see, hear, and collaborate with us in ways that feel natural and human. With this vision, we're designing a new kind of computer, focused on making voice companions part of our daily lives. Our team brings together founders from Oculus and Ubiquity6, alongside proven leaders from Meta, Google, and Apple, with deep expertise spanning hardware and software. Join us in shaping a future where computers truly come alive.<h3>About the Role</h3>Bringing a new kind of advanced consumer electronics product to life requires rapid firmware bring-up, often in new or frequently changing hardware environments that are tightly integrated into other parts of the system. We are seeking an Embedded-system Engineer who is comfortable working across Linux-based, RTOS-based, and bare-metal MCU applications to drive fast and efficient firmware development. You will have experience in shipping a wearable consumer product from prototyping and product development, and be able to coordinate a distributed team to effectively bring up, use, and debug custom embedded systems.  <h3>Responsibilities: </h3><ul style="min-height:1.5em"><li>Architect, design, implement, and test embedded software running on a variety of platforms from low-power MCUs to mobile SOCs.</li><li>Contribute to hardware design, bring up and debug through part selection, interface definition, driver development, tooling development, and support.</li><li>Define and continuously improve firmware development, debug, and CI workflow and environment.</li><li>Contribute to SW development for interfacing to embedded systems from PC or network equipment for data collection, testing, and calibration.</li><li>Understand requirements, and architecture of higher level software components, lead integration and optimization of those components for running on or interfacing with embedded systems.</li><li>Engage and direct partners to augment embedded systems development capabilities.</li></ul><h3>Required Qualifications:</h3><ul style="min-height:1.5em"><li>Experience working independently in high-ambiguity environments.</li><li>5+ years of experience owning and delivering software for complex embedded systems.</li><li>Mastery of C/C++, Python, and firmware build &amp; debug tools.</li><li>Experience shipping and supporting a complex product including custom sensors, real-time computing, HMI, and custom batteries.</li><li>Experience in one or more of the following: Bootloaders, Linux/AOSP, Zephyr/FreeRTOS, DSP/ISP, Bluetooth/Wifi/Ethernet, USB, and  MIPI.</li><li>Comfortable using electrical test equipment (oscilloscopes, logic analyzers).</li><li>Excellent written &amp; verbal communication skills.</li><li>Passion for learning, and experimentation evidenced by side projects or learning endeavors.</li><li>BS or MS in EE, CE, CS, or equivalent.</li></ul><h3>Preferred Qualifications:</h3><ul style="min-height:1.5em"><li>Experience with wearable electronics, computer vision, audio, or IoT applications.</li><li>Experience with CI/CD infrastructure.</li><li>Experience with machine learning frameworks &amp; deployment. </li><li>Experience with Nordic, Qualcomm, and/or embedded ML accelerators is a plus. Experience with IoT devices is a plus. Experience with ARM and/or RISCV is a plus.</li></ul>Sesame is committed to a workplace where everyone feels valued, respected, and empowered. We welcome all qualified applicants, embracing diversity in race, gender, identity, orientation, ability, and more. We provide reasonable accommodations for applicants with disabilities—contact careers@sesame.com for assistance.Full-time Employee Benefits: <ul style="min-height:1.5em"><li>401k matching</li><li>100% employer-paid health, vision, and dental benefits </li><li>Unlimited PTO and sick time </li><li>Flexible spending account matching (medical FSA) </li></ul>Benefits do not apply to contingent/contract workers

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- This assessment gives us an idea of your C++ skills - Companies that evaluate this skillset in interviews: Rockstar Games, Ubisoft, Mayhem Studios, etc. - 10 Multiple Choice questions - Average time to complete: 7 to 10 minutes

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Reddit

Senior Machine Learning Engineer, Ads

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Senior Software Engineer, Ads

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Join Reddit's Ads team as a Machine Learning Engineer, contributing to the company's business growth. This hands-on role involves the full lifecycle of ML systems, from research and modeling to deployment and optimization in production. Your work will directly impact the delivery of relevant ads and drive value for advertisers across areas like ad ranking, bidding, measurement, and optimization, ensuring a delightful and relevant experience for users and advertisers alike.

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Reddit is a community of communities. It’s built on shared interests, passion, and trust and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 101M+ daily active unique visitors, Reddit is one of the internet’s largest sources of information. For more information, visit <a href="http://redditinc.com/" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">redditinc.com</a>.Reddit has a flexible workforce! If you happen to live close to one of our physical office locations our doors are open for you to come into the office as often as you'd like. Don't live near one of our offices? No worries: You can apply to work remotely in any country in which we have a physical presence.Reddit is a community of communities where people can dive into anything through experiences built around their interests, hobbies, and passions. Our mission is to bring community, belonging, and empowerment to everyone in the world. Reddit users submit, vote, and comment on content, stories, and discussions about the topics they care about the most. From pets to parenting, there’s a community for everybody on Reddit and with over 50 million daily active users, it is home to the most open and authentic conversations on the internet. For more information, visit redditinc.com.Reddit is a network of more than 100,000 communities where people can dive into anything through experiences built around their interests, hobbies and passions. Reddit users submit, vote and comment on content, stories and discussions about the topics they care about the most. From pets to parenting, there’s a community for everybody on Reddit and with more than 100 million daily active uniques, it is home to the most open and authentic conversations on the internet. For more information, visit redditinc.com.We’re evolving and continuing our mission to bring community, belonging, and empowerment to everyone in the world. Providing a delightful and relevant experience to our users applies to our Ads like all of our offerings, and we’re excited to build a product that is best-in-class for our users and advertisers. The year ahead is a busy one!<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Team Description</h3>Reddit is poised to rapidly innovate and grow like no other time in its history. We’re currently hiring across multiple teams including: Ads Prediction, App Ads & Conversion Modeling, Ads Measurement Modeling, Ads Targeting & Retrieval, Advertiser Optimization and Ads Marketplace Teams.Ads ML Serving TeamPart of Reddit’s Ads ML Platform, this team builds a highly reliable, scalable, and efficient ML serving stack. They focus on long-term architecture, tight integration with the ads serving stack, CPU/GPU performance optimization, and model velocity tools like observability libraries and quality gating.Attribution & Identity TeamThis team builds attribution systems and identity solutions that help advertisers measure the impact of their campaigns. They create experimentation tools and platforms that improve usability, transparency, and performance insights.Ads Measurement Modeling TeamA horizontal ML team in the Ads Measurement org focused on proving Reddit Ads value while maintaining privacy compliance. Their work includes Modeled Identity, Modeled Conversions, and ATT opt-out utility enhancements.Ads Targeting and Retrieval TeamThis team designs and implements large-scale ML systems to improve targeting products. They work on offline and online retrieval systems to enhance contextual and behavioral targeting.Advertiser Optimization TeamComposed of two horizontal teams, this group focuses on advertiser outcomes. The Recommendations and Forecasting team builds ML-driven tools for advertisers and sales. The Bidding/Pacing team develops algorithms and products like TCPA, TROAS, and performance advertising solutions, while driving innovations in marketplace dynamics.Ads Marketplace Quality TeamThis team optimizes Reddit’s ads marketplace by building algorithms for auction and pricing efficiency. They also work on supply optimization and ad relevance, ensuring ads reach the right users at the right time in the right context.App Ads and Conversion Modeling TeamsFormed in early 2024, these teams focus on app ads modeling, including app install models and deep neural network models for iOS and Android conversions. They work on in-app event optimization and return on ad spend (RoAS) optimization, and are running experiments on top of DNN architectures to improve prediction accuracy.Ads Prediction TeamThis team drives innovation across signals, features, model architecture, and infrastructure to improve marketplace efficiency and revenue. It includes:<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Core Ads Ranking (CAR): Builds reusable, scalable features and ranking models that integrate across the ads ecosystem, improving quality and iteration speed.</li><li class="leading-relaxed">Engagement Modeling (EV): Develops click, long-click, and video engagement models for upper- and middle-funnel ad products.</li></ul>Reddit Ads offers the opportunity to work on large-scale systems that directly impact advertisers, users, and revenue. We have openings across multiple teams and are looking for engineers and ML experts at all levels.<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Role Description</h3>Join the Ads team as a Machine Learning Engineer and become a key contributor to Reddit’s business. In this hands-on role, you will be responsible for the full lifecycle of our ML systems, from initial research and modeling to deployment and optimization in production. Your work will directly impact how we deliver relevant ads and drive value for our advertisers across areas like ad ranking, bidding, measurement, and optimization.<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Responsibilities:</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Design, build, and deploy industrial-level machine learning models to solve critical problems in ad ranking, bidding, and optimization.</li><li class="leading-relaxed">Take full ownership of the ML lifecycle, from ideation and research to building scalable serving systems and maintaining models in production.</li><li class="leading-relaxed">Perform systematic feature engineering to transform raw, diverse data into high-quality features that drive model performance.</li><li class="leading-relaxed">Work closely with product managers, data scientists, and engineers to translate business challenges into effective ML solutions.</li><li class="leading-relaxed">Improve the reliability and stability of our ML systems by building robust monitoring, alerting, and automated retraining pipelines.</li><li class="leading-relaxed">Research new algorithms, stay up-to-date with state-of-the-art ML techniques, and contribute to the team’s strategy and roadmap.</li></ul><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Required Qualifications:</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">At least 3+ years of end-to-end experience in training, evaluating, and deploying machine learning models in a production environment.</li><li class="leading-relaxed">Proficient in one or more general-purpose programming languages (e.g., Python, Scala) and have a solid understanding of software development best practices.</li><li class="leading-relaxed">Hands-on experience with a major machine learning framework (e.g., TensorFlow, PyTorch) and a deep understanding of core ML concepts and algorithms.</li><li class="leading-relaxed">Proven ability to work effectively with cross-functional teams, including product managers and data scientists, to translate business needs into technical solutions.</li><li class="leading-relaxed">Track record of using machine learning to drive key performance indicator (KPI) wins and solve complex, real-world problems.</li></ul><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Bonus Points:</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Experience working in the Ads domain</li><li class="leading-relaxed">Experience or interest in the advertising business and understanding customer needs</li><li class="leading-relaxed">An advanced degree (MS/PhD) in a quantitative field.</li><li class="leading-relaxed">Familiarity with distributed systems and large-scale data processing technologies (e.g., Spark, Kafka).</li></ul>In select roles and locations, the interviews will be recorded, and transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out recording, transcription and summarization prior to any scheduled interviews.During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us. We will use this information to evaluate your application for employment or an independent contractor role, as applicable. We will not sell your personal information or disclose it to any third party for their marketing purposes. We will delete any recording of your interview promptly after making a hiring decision. For more information about how we will handle your personal information, including our retention of it, please refer to our <a href="https://redditinc.com/policies/candidate-privacy-policy" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">Candidate Privacy Policy for Potential Employees and Contractors</a>.Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.Apply for this job------------------<ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">indicates a required field</li></ul>First Name*Last Name*Preferred First NameEmail*Phone*Location (City)*Locate meResume/CV*AttachAttachDropboxGoogle DriveEnter manuallyEnter manuallyAccepted file types: pdf, doc, docx, txt, rtfCover LetterAttachAttachDropboxGoogle DriveEnter manuallyEnter manuallyAccepted file types: pdf, doc, docx, txt, rtf---LinkedIn ProfileHow did you hear about this job?*Are you currently authorized to work in the Canada?*Select...Do you now, or will you in the future, require immigration sponsorship to work at Reddit?*Select...By selecting "I agree," I understand that the information I have provided as part of this job application will be processed in accordance with Reddit's Candidate Privacy Policy. *Select...<a href="https://www.redditinc.com/policies/candidate-privacy-policy" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">Reddit's Candidate Privacy Policy</a>Please provide the name of your current (or most recent) company*Are you located in Colorado (US), the United Kingdom, Switzerland, or a country in the European Economic Area?*Select...---<h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Reddit Canada Equal Employment Information</h3>Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. To bring community and belonging to everyone in the world, Reddit’s employees must represent communities and redditors on our platform.The Company is committed to treating all people in a way that allows them to maintain their dignity and independence. We believe in integration and equal opportunity. Accommodations are available throughout the recruitment process and applicants with a disability may request to be accommodated throughout the recruitment process.We will work with all applicants to accommodate their individual accessibility needsOur vision at Reddit is to have a workforce representative of people with different perspectives and experiences, including but not limited to, gender, race and ethnicity, sexual orientation, age, national origin, religion, and political views.We invite you to self-identify across the identities below so we can better understand our talent pools and assess our effectiveness in attracting and recruiting people to Reddit from all backgrounds.Answering these questions will not impact your application, nor will this information be shared with anyone making a hiring decision.What gender identity do you most closely identify with? *Select...Are you a person of transgender experience?*Select...What sexual orientation do you most closely identify with? *Select...---By checking this box, I consent to Reddit collecting, storing, and processing my responses to the demographic data surveys above.*Submit application

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This assessment gives us an idea of your C++ skills- Companies that evaluate this skillset in interviews: Rockstar Games, Ubisoft, Mayhem Studios, etc.- 10 Multiple Choice questions- Average time to complete: 7 to 10 minutes

Let's assess your Data Structures! - This assessment gives us an idea of your problem solving skills using DSA- Companies that evaluate this skillset in interviews: MPL, LILA Games, GSN Games, etc.- 10 Multiple Choice questions

Data Structures and Algorithms

Let's assess your Programming Patterns! ????- This assessment gives us an idea of your code architecture skills- Companies that evaluate this skillset in interviews: Dirtcube, PTW, Playshifu, etc.

Programming Patterns

Let's assess your OOPs skills! ????- This assessment gives us an idea of your fundamental OOPS concepts and Solid principles skills- Companies that evaluate this skillset in interviews: Hitwicket, GSN Games, Tomo Club, etc.

Object Oriented Programming

Let's assess your Unity Skills ????- This assessment gives us an idea of your Unity fundamentals- Companies you can apply for after taking this assessment: Godspeed games, Salvation Games, nCore Games, etc.