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Lead Senior Software Engineer L3 in Seattle

32 active opportunities · Updated for October 2026

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Explore current lead senior software engineer l3 jobs in Seattle. Use filters to narrow by work mode, employment type, experience and date posted.

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Brex
📍 Seattle• Full-time
Just now

Why join us Brex is the intelligent finance platform that enables companies to spend smarter and move faster in more than 200 markets. By combining global corporate cards and banking with intuitive spend management, bill pay, and travel software, Brex enables founders and finance teams to accelerate operations, gain real-time visibility, and control spend effortlessly. Brex’s AI-native automation and world-class service eliminate manual expense and accounting tasks for customers so they can focus on what matters most. Tens of thousands of the world's best companies run on Brex, including DoorDash, Coinbase, Robinhood, Zoom, Plaid, Reddit, and SeatGeek. Working at Brex allows you to push your limits, challenge the status quo, and collaborate with some of the brightest minds in the industry. We’re committed to building a diverse team and inclusive culture and believe your potential should only be limited by how big you can dream. We make this a reality by empowering you with the tools, resources, and support you need to grow your career. Sales at Brex The Sales team is the driving factor behind revenue for Brex. Every member of our team directly affects our bottom line. We focus on generating new opportunities, acquiring new customers, and building even stronger relationships with our current customers. We have a unified culture recognizing big wins daily and celebrating individual accomplishments weekly and monthly. We make sure that top performers are recognized and have built a competitive environment to keep the team motivated and unified. What you’ll do As a Manager, Sales Development, you will build, lead and mentor a high performing Sales Development team who are responsible for outbound prospecting and pipeline generation. Strong candidates will be data-driven and focused on improving and optimizing individual and team results. Success in the role requires excellent interpersonal and communication skills, cross-functional alignment and a focus on innovation an

aigoexcel
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L
Just now

At Lyft, our purpose is to serve and connect. We aim to achieve this by cultivating a work environment where all team members belong and have the opportunity to thrive. Core Services powers the passenger and driver state machines from request and accept through drop-off and payment completion. The team enables new ride variations like autonomous vehicles, taxis, scheduled, business concierge, health and more. The “Core Services” are a suite of distributed Python and Golang systems central to Lyft’s backend. As a software engineer on the team, you will work on integrating new rider and driver products and features onto the state machine and enhancing the performance and reliability of ride state transitions. If you are excited about solving back-end distributed systems problems and owning a mission-critical part of Lyft’s operations, this team is for you. As a Software Engineer at Lyft, you will collaborate with other engineers and cross-functional teams, such as product, data science, and analytics, to lead and execute large projects—from concept to efficient execution. We are looking for motivated engineers who are passionate about solving challenging technical problems and excited to work in a fast-paced, innovative, and cross-functional environment. In this role, you will tackle some of the most interesting and impactful problems in ridesharing. Key traits for success include being passionate about Lyft’s business and product, a quick learner, a collaborative mindset, and an eagerness to drive initiatives both within and across teams. You'll be joining a small, close-knit team with engaged and collaborative co-workers. Responsibilities: Design, develop, deploy, monitor, operate and maintain existing or new elements of the Fulfillment tech stack Write well-crafted, well-tested, readable, maintainable code Have a good grasp and ability to explain the various tradeoffs made in decisions Participate in code reviews to ensure code quality and distribute knowledg

pythonsqlaws
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