Senior Software Engineer
Trayo
We're a fast-moving, VC-backed startup building an AI-powered productfor enterprise teams. We work at the intersection of data, automation,and user-facing workflows, helping customers make faster,higher-confidence decisions. Our founding team brings rare depth across both scale and startupexecution: Our CEO previously led multiple large-scale analytics services(hundreds of millions in ARR), owning P&L, product, and GTM, and helpedscale a major product from early stage through IPO. Her background spansenterprise software, go-to-market strategy, and AI/ML-driven data platforms. Our CTO is a multi-time founder with successful acquisitionsand deep technical leadership experience building developer products andbusiness software used by millions of customers. Why This Role is Special This is a true early-stage builder role. You'll be one of the firstsenior engineers, part of the first generation of engineering in agrowing company. You will: Influence architecture, standards, and core technical decisions early Work closely with founders and product leadership Ship quickly, with real feedback loops, and build the right foundationas we scale What You'll Do Build customer-facing product features end-to-end (backend + frontendas needed) Develop AI-enabled workflows and internal tooling that improve productcapabilities Design APIs, data models, and services that scale with usage Improve reliability, observability, and performance Collaborate cross-functionally to turn vague problems into shippedproduct What We’re Looking For 5+ years of professional software engineering experience (orequivalent) Strong backend fundamentals (APIs, databases, services) Product mindset and strong ownership Comfort operating in ambiguity in a fast-moving environment Clear communication and strong collaboration skills Bonus Points (not required) Startup experience Experience with LLM / AI-enabled systems (retrieval, evals, agent/toolpatterns) Strong frontend (React / Next.js) Cloud infrastructure experience (AWS/GCP), monitoring/logging What We Offer Competitive salary + meaningful equity Small team, high trust, real impact Hybrid flexibility; collaboration hub in San Mateo #J-18808-Ljbffr
$243.29k - $295.25k
...service owners entirely from managing cluster lifecycles. As a Senior Engineer on the Cache team (part of the Infra Storage org), you will... ...professional experience) with at least 6+ years of hands-on software engineering experience. * Distributed Systems Expertise:...SeniorFull timeH1bWork at officeLocal areaVisa sponsorshipMonday to Friday$160k - $271k
...cloud technologies to deliver scalable, reliable, and secure solutions that drive measurable value for our customers. As a Senior Software Engineer - Data Platform, you will play a pivotal role in designing and building next-generation, internet-scale data and analytics...SeniorFull timePart timeFlexible hours$130k - $200k
IXL Learning, developer of personalized learning products used by millions of people globally, is seeking Senior Software Engineers who have a passion for technology and education to help us add new features to our extremely successful educational products and build new...SeniorFull timeWork at office$295.25k - $345.04k
...continuously enhance features and integrate cutting-edge technologies to find novel solutions to problems. We're hiring an exceptional iOS engineer to help us push the bar even higher. You will: Shape & improve the iOS experience that millions of players open every day. Lead...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday$193.3k - $289.9k
...PlayStation brand, a name synonymous with entertainment excellence and creativity.Senior Software EngineerSan Mateo, CARole OverviewSony Interactive Entertainment LLC seeks a Senior Software Engineer in San Mateo, CA to lead rapid prototyping of proof-of-concept (PoC)...SeniorRemote workWork from home$243.29k - $295.25k
...solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.As a Senior Software Engineer on our Release Engineering team, you will build the systems that hundreds of engineers across Roblox use every day to...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to FridayFlexible hours$196.75k - $243.29k
...solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.As a Senior Software Engineer on the Avatar Personalization team, you will use the Roblox game engine to build features that push the boundaries of our...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday$216.68k - $269.17k
...solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.As a Senior Privacy Software Engineer on the Privacy Infrastructure team, you will design and build the foundational platforms, services, and controls that...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday$193.3k - $289.9k
...PlayStation brand, a name synonymous with entertainment excellence and creativity.Are you looking for a challenge?We are seeking a Software Engineer to join the team to develop, maintain, and improve the framework powering a rich set of user experiences on multiple platforms...Senior$196.75k - $243.29k
...ensures that these foundational avatar components are high-quality, performant, and reliable at scale.We are looking for a Senior Software Engineer to join our User-Generated Content (UGC) Validation engineering initiatives. This role focuses on advancing our existing...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday$196.75k - $255.25k
...Avatar customization and Avatar Marketplace within Roblox. As a Senior Engineer on our team, you will lead the work on building personalized... ...experiences.You Have: 3+ years of professional experience in software developmentProficiency in one or more programming languages...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday$196.75k - $243.29k
...players and is dedicated to delivering superior performance, reliability, and user experience on PlayStation and Xbox. As a Senior Software Engineer on the Consoles team, you'll be a driving technical force — leading complex client work end-to-end, raising the quality...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday$196.75k - $243.29k
...We are using technologies from LLM, Imitation Learning, Reinforcement Learning, Behavior Trees, Statement Machines. As a Senior Software Engineer, you will design and build highly scalable systems to help creators to continuously deliver experiences that feel native and...SeniorFull timeWork experience placementH1bWork at officeLocal areaWorldwideVisa sponsorshipMonday to Friday$243.29k - $295.25k
...solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.As a Senior Software Engineer on our Geometry team, you will drive foundational algorithms for real-time 3D content creation and editing that power the...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday$242.1k - $312.97k
...experiences for everyone. What You'll Do: In this Senior Frontend Engineering role, you will be a key contributor in shaping the future... ...field, or equivalent practical experience. ~8+ years of software development experience, including substantial experience building...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday- ...Role Summary:We are looking for a highly skilled Sr. Fullstack Engineer to join our dynamic engineering team. In this role, you will leverage... ...(CI/CD) to ensure high reliability and maintainability of our software.Troubleshoot and resolve technical issues across your domain,...SeniorFull timeTemporary workWork experience placementWork at officeRemote work3 days per week
$216.68k - $269.17k
...scale, and helping to create safer, more civil shared experiences for everyone. Be a part of Roblox Corporation as a Senior Security Software Engineer in Vulnerability Management. Join our dedicated team to ensure the security of our platform. You will work on scaling...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday$196.75k - $295.25k
...Roblox is seeking a Senior Engineer in San Mateo, CA, to enhance the Avatar Marketplace and create streamlined shopping experiences for millions... ...of users. The ideal candidate will have a background in software development, comfortable with languages like C# and Python,...SeniorRoblox
San Mateo, CA2 days ago$196.75k - $243.29k
...Roblox is seeking a Senior Software Engineer focused on Collaboration in San Mateo, California. In this role, you will design and build complex technical features in our game engine, enhancing collaboration tools for developers. Ideal candidates will have over 5 years...SeniorJobr
San Mateo, CA2 days ago$269.17k - $326.06k
...unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a Senior Security Software Engineer on the IAM team at Roblox, you'll build the next generation of identity and access management — defining how both humans...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday- ...and stay close to customer outcomes. Mentorship: Help junior engineers grow by sharing context, giving direct feedback, and modeling... ...and how the team ships. Requirements 5+ years of experience in software engineering Strong fundamentals across front-end and/or back-end...Senior
Jobtailor
San Mateo, CA12 hours ago - ...Senior Software Engineer @ Anatomy Financial Anatomy is on a mission to automate financial operations for healthcare and enable providers to focus on quality patient care. Financial operations in healthcare are unique. Anatomy uses the latest advancements in AI and...SeniorLocal area
Anatomy Financial
San Mateo, CA2 days ago - ...Senior Software Engineer Remote (United States continental 48) / San Mateo, California, United States JetInsight's best-in-class quoting and fleet management software helps aircraft charter operators run and grow safer, more efficient, and more profitable businesses...SeniorRemote work
JetInsight
San Mateo, CA4 days ago - ...directly with our leadership team to build new features, enhance existing ones, and ensure the overall stability and performance of our software. This is a unique opportunity to join a growing startup at an early stage and have a significant impact on the direction and...Senior
Storepass
Burlingame, CA2 days ago $243.29k - $295.25k
...solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.As a Senior Software Engineer on the Communications team, you'll own the backend systems that power chat and messaging for millions of players on Roblox...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday$216.2k - $324.4k
...and nurture the experiences under the PlayStation brand, a name synonymous with entertainment excellence and creativity. Senior Software Engineer, React Native San Mateo, CA (Hybrid) Why PlayStation? PlayStation isn't just the Best Place to...SeniorFull timeImmediate start- ...technical discussions, and design reviews with engineering teammates. Collaborate with frontend,... .... Requirements 3+ years of professional software engineering experience, ideally in... ...projects while partnering effectively with senior engineers on complex technical decisions...Senior
Jobtailor
Burlingame, CA5 hours ago - ...Senior Software Development Engineer (Platform) Arena PLM (PTC Business) Position Overview Arena PLM is seeking a Senior Software Development Engineer (Sr. SDE) to work on platform services within our Arena PLM application. In this role, you will build new features and...Senior
PTC
San Mateo, CA2 days ago $243.29k - $295.25k
...technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.What You’ll Do:As a Senior Software Engineer on the Creator Business team, you will help drive a healthy and ever-growing creator economy at Roblox. Our mission is to...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday$242.1k - $293.8k
...solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.As a Senior Software Engineer working on Ads Experience, you will build a brand new advertising experience for our advertisers and publishers. This team...SeniorFull timeWork experience placementH1bWork at officeLocal areaVisa sponsorshipMonday to Friday
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Software Engineer. Be the first to apply!
- ngo software engineer San Mateo, CA
- software data engineer San Mateo, CA
- graduate software engineer San Mateo, CA
- software system engineer San Mateo, CA
- graduate software developer San Mateo, CA
- entry level software engineer remote San Mateo, CA
- software developer positions San Mateo, CA
- software development engineer aws San Mateo, CA
- consulting software engineer San Mateo, CA
- financial software developer San Mateo, CA