Senior Java Fullstack Engineer jobs in Castro

MetAntz

5+ years building and scaling production software that real people actually use Comfortable being the only engineer in the room - and thriving in it You have owned products from zero to thousands of users, not just written tickets Obsessed with shipping speed is a feature, and you treat it that way

About Treehouse Treehouse is a venture-backed startup company that simplifies the electrification of the places where we live and work. Through Treehouse, customers experience a seamless electrical installation process from start to finish, powered by a software-enabled electrician workforce. About

Hex Technologies

$13,167 - $22,125 /year

SF or NYC About the role At Hex we are using AI to reinvent how business users interact with data, enabling rich data exploration using natural language. Our team of fullstack engineers are responsible for the critical workflows that our customers use to monitor and govern these AI agents, so that u

About the Role The ideal Software Engineer, Fullstack candidate will be at the forefront of delighting customers to advance the electrification movement. Their technical skills, grounded in a deep understanding of JavaScript, will be enhanced by a passion for performance, user empathy, an appreciati

Accounting software hasn’t fundamentally changed in decades. The tools finance teams rely on were built for manual entry, static reports, and slow month-end workflows. We think that’s broken, and we’re fixing it. Puzzle rebuilt the accounting stack from the ground up. At the core is a real-time fina

About The Role Sigma is transforming how businesses run by delivering a high performance platform on the modern data architecture. Hence, we are growing the engineering team and looking for engineers who are excited to solve challenging problems, deliver impactful capabilities throughout our stack t

The Company PayPal has been revolutionizing commerce globally for more than 25 years. Creating innovative experiences that make moving money, selling, and shopping simple, personalized, and secure, PayPal empowers consumers and businesses in approximately 200 markets to join and thrive in the global

Whatnot

🚀 Join the Future of Commerce with Whatnot! Whatnot is the largest livestream shopping platform in North America and Europe to buy, sell, and discover the things you love. Whether it's trading cards, fashion, electronics, or live plants, our sellers are building real businesses across hundreds of c

Responsibilities About the Team Welcome to the Authorization Services Team! We are the backbone of the company's security infrastructure, responsible for providing cutting-edge authorization services that are integral to nearly every employee and microservice within our organization. The Authorizati

We are seeking an experienced Full Stack Java Developer to design, develop, and deliver scalable, high-quality applications in a client-facing environment. This role requires strong expertise across backend and frontend technologies, hands-on leadership in full stack development, and the ability to

At GEICO, we offer a rewarding career where your ambitions are met with endless possibilities. Every day we honor our iconic brand by offering quality coverage to millions of customers and being there when they need us most. We thrive through relentless innovation to exceed our customers’ expectatio

At GEICO, we offer a rewarding career where your ambitions are met with endless possibilities. Every day we honor our iconic brand by offering quality coverage to millions of customers and being there when they need us most. We thrive through relentless innovation to exceed our customers’ expectatio

Title: Fullstack Software Engineer Location: San Francisco, CA (Hybrid) Company Stage of Funding: Private Equity–Backed (Profitable Portfolio) Office Type: Hybrid (In-person collaboration several days per week) Salary: $180,000 – $220,000 base + competitive bonus and benefits Company Description Our

At GEICO, we offer a rewarding career where your ambitions are met with endless possibilities. Every day we honor our iconic brand by offering quality coverage to millions of customers and being there when they need us most. We thrive through relentless innovation to exceed our customers’ expectatio

Location San Mateo, CA; New York, NY Employment Type Full time Location Type Hybrid Department AI Fullstack Software Engineer (Senior / Staff) Genesis Molecular AI is building a world-class software team to solve problems in drug discovery through machine learning, biophysical simulation, and comput

Job Description: Job Summary: We are looking for a skilled Full Stack Java Developer with strong expertise in Java backend development, React frontend frameworks, and AWS cloud services. The candidate will be responsible for designing, developing, and deploying scalable web applications while collab

ServiceNow

Company Description It all started in sunny San Diego, California in 2004 when a visionary engineer, Fred Luddy, saw the potential to transform how we work. Fast forward to today — ServiceNow stands as a global market leader, bringing innovative AI-enhanced technology to over 8,100 customers, includ

About Us Tavus is a research lab pioneering human computing. We’re building AI Humans: a new interface that closes the gap between people and machines, free from the friction of today’s systems. Our real-time human simulation models let machines see, hear, respond, and even look real—enabling meanin

We have an immediate need for an Java Developer. Job Title: Java Developer Location: Onsite (San Jose 95131) Duration: 12+Months Contract Job Summary: Lead platform engineering initiatives for the Customer Data Store, with a focus on cloud infrastructure, performance optimization, and serverless arc

Akkodis is seeking a Java Backend Engineer for a Contract with a client in Sunnyvale, CA(Hybrid). You’ll design cloud‑based storage and streaming solutions while ensuring data quality and seamless collaboration across engineering teams. Rate Range: $60/hour to $64/hour; The rate may be negotiable ba