Principal Software Engineer - B2B Engineering

Role Overview SoFi is looking for a Principal Software Engineer focused on Member Growth to join the San Francisco headquarters. This role centers on designing and building software that improves the experience for SoFi’s members and supports the company’s mission to help people achieve financial independence. What You Will Do Lead the design and implementation of new software solutions aimed at increasing member engagement and growth. Guide and mentor a skilled team of engineers, providing technical direction and support. Work closely with cross-functional partners to deliver systems that scale with SoFi’s expanding user base. Apply modern technologies and engineering practices to create reliable, maintainable platforms. Location This position is based at SoFi’s San Francisco headquarters in California.

Employee Applicant Privacy NoticeAbout Us:Join us in reshaping the financial landscape. At SoFi, we are revolutionizing how individuals engage with personal finance, empowering our members with innovative, mobile-centric solutions. As a pioneering financial services firm and national bank, we leverage cutting-edge technology to help our millions of members achieve their financial aspirations. In an era of unprecedented industry transformation, we take pride in our daily contributions that significantly enrich lives, guided by our core values. Invest in your future, your career, and the financial realm with us.The Position:We are looking for a Senior Staff Software Engineer, AI to join our Member Growth team, focused on delivering AI-driven value to SoFi Members. This position is crucial in enhancing our members' financial journeys through advanced personalization and AI solutions. You will spearhead the development of internal frameworks, tools, and applications that elevate our marketing, communication, and measurement capabilities.Our mission is to guide members towards financial independence by equipping them with the precise tools, resources, and insights they need to thrive. We aspire to be a reliable ally in their financial endeavors, providing timely and personalized insights that cultivate lasting confidence. Achieving this demands a thoughtful, highly customized approach tailored to each member's unique financial circumstances.The ideal candidate will have extensive expertise in Artificial Intelligence (AI) and Machine Learning (ML) systems, coupled with a fervor for developing next-generation products. At SoFi, we value seamless collaboration between Product, Design, and Engineering; hence, you will engage throughout the entire product lifecycle—from initial concept to deployment and continuous enhancement. We champion a culture of continuous learning and expect you to be equally committed to your professional development and mentoring colleagues.Your Responsibilities:Lead technical architecture and design decisions, facilitating cross-functional discussions for AI and ML solutions.Ensure the delivery of highly available and scalable services in a production environment.

Join our dynamic team at Spring Health as a Senior Software Engineer I, where you will play a pivotal role in driving our member growth and retention initiatives. In this position, you will leverage your technical expertise to develop innovative software solutions that enhance our user experience and contribute to our mission of improving mental health care.

About Spring Health Spring Health works to remove barriers to mental healthcare. Our platform, Precision Mental Healthcare, delivers personalized care, therapy, coaching, or medication, when it matters most. Over 450 organizations, including Microsoft, Target, and Delta Airlines, trust Spring Health to support 10 million people. Our approach has demonstrated a net positive ROI for employers and has received external validation for cost savings. Spring Health recently completed Series E funding, reaching a $3.3 billion valuation, with backing from Generation Investment, Tiger Global, and others. Role Overview: Software Engineer II – Member Growth This hybrid position is based in San Francisco. The role reports to the Senior Engineering Manager – Top of Funnel. The Member Growth team focuses on building full-stack features that improve how members engage with and discover care. The work sits at the intersection of product, design, and data, aiming to deliver a seamless experience for users at scale. What You Will Do Develop and maintain full-stack features to support member engagement and care discovery Collaborate closely with product managers, designers, and data specialists Shape the experience for millions of users, from registration and authentication to onboarding and provider matching Location and Work Arrangement Hybrid role based at 2 Embarcadero Center, San Francisco In-office presence required 2–3 days per week Candidates must live in the San Francisco metro area or be willing to relocate independently within 90 days

Join Cloudflare as a Principal Software Engineer specializing in Resiliency, where you will play a pivotal role in enhancing our systems' robustness and availability. Your expertise will contribute to building and maintaining resilient infrastructure that supports our global network, ensuring our customers receive uninterrupted service.In this role, you will work alongside a talented team of engineers to identify vulnerabilities, implement solutions, and innovate new strategies that enhance system performance and reliability. If you are passionate about software engineering and system resiliency, we invite you to apply!

Join Cloudflare as a Principal Software Engineer specializing in billing systems, where you will play a pivotal role in shaping our payment and invoicing solutions. You will collaborate with cross-functional teams to implement innovative solutions that enhance user experiences and streamline processes. If you're passionate about building scalable software and want to contribute to a fast-paced, innovative environment, we want to hear from you!

About Sprinter Health:At Sprinter Health, we are dedicated to transforming healthcare access by delivering essential services directly to patients in the comfort of their homes. A staggering 30% of patients in the U.S. forgo preventive or chronic care due to transportation challenges, often resulting in costly emergency room visits that contribute to over $300 billion in avoidable healthcare expenses annually.Utilizing cutting-edge technologies that drive leading marketplace and last-mile delivery solutions, we ensure that care reaches those who need it most. To date, we have successfully served over 2 million patients across 22 states, conducted more than 130,000 in-home visits, and achieved a remarkable Net Promoter Score (NPS) of 92. Supported by our talented team of clinicians, technologists, and operational experts, we have raised over $125 million from esteemed investors including a16z, General Catalyst, GV, and Accel, ensuring a strong multi-year runway for our mission.About the Role:The Growth Engineering team at Sprinter Health plays a vital role in enabling patients to access our free in-home care services, particularly for underserved communities. Your primary responsibility will be to facilitate patient engagement and simplify the booking process, transitioning from traditional outbound phone outreach to a more integrated, product-driven approach.This position offers a unique opportunity to make a significant impact on the healthcare journey for many individuals, as you will be instrumental in creating systems that ensure timely access to care.Office Location:Our company operates in a hybrid work environment, with offices in San Francisco and Menlo Park. We prioritize work-life balance and recognize the importance of flexibility in our employees' lives.

Join Discord, a platform that connects over 200 million users every month primarily through gaming. With over 90% of our users engaged in gaming activities, we facilitate over 1.5 billion hours of gaming conversations, enhancing the experience before, during, and after gameplay.The Infrastructure organization at Discord is fundamental to our user experience. We handle the real-time delivery of over 40 million events per second and manage the storage of trillions of messages, ensuring robust connections among our vast user base. As a Principal Engineer, you will play a pivotal role in guiding our infrastructure teams, shaping our technical vision, and maintaining the reliability of Discord at a massive scale.This position is ideal for a professional who excels at the intersection of advanced technical skills and organizational leadership. You will contribute to our infrastructure roadmap, address our most challenging technical dilemmas, and ensure our systems can efficiently scale to accommodate the next wave of users.

Principal Software Engineer Saviynt offers an AI-driven identity platform that effectively manages and governs access permissions for both human and non-human entities across all organizational applications, data, and processes. Our clients rely on Saviynt to protect their digital assets, enhance operational efficiency, and lower compliance expenses. Designed for the age of AI, Saviynt is at the forefront of helping organizations safely advance their AI deployments and utilization. As a recognized leader in identity security, we provide solutions that empower and protect some of the world’s leading brands, Fortune 500 companies, and government institutions. For more details, please visit www.saviynt.com. Role Summary In this pivotal role, you will provide technical leadership and extensive knowledge in complex engineering domains, guiding architectural decisions while ensuring scalability, reliability, and quality across key platform components. As a Principal Engineer, you will act as a technical authority, mentor senior engineers, and tackle the most intricate technical challenges. The Connectors team plays a crucial role in facilitating seamless integrations between Saviynt's Identity Governance platform and a multitude of enterprise applications by developing and maintaining robust, scalable connector frameworks. We are committed to ensuring reliable data synchronization, provisioning, and lifecycle management across diverse external systems, forming a vital foundation for the entire platform. What You Will Be Doing ● Design and architect scalable, high-performance connector frameworks for enterprise application integrations.● Define technical standards, best practices, and design patterns for connector development.● Drive architectural decisions for complex integration scenarios involving over 200 enterprise applications.● Evaluate and recommend new technologies, tools, and frameworks to enhance connector reliability and performance.● Lead technical design reviews and provide guidance on system architecture and design trade-offs.

Join Mixpanel as a Software Engineer focusing on growth initiatives! In this role, you will leverage your technical expertise to enhance our product's reach and performance. Collaborate with cross-functional teams to develop innovative features that drive user engagement and retention.

Join Cloudflare as a Principal Software Engineer, where you will play a pivotal role in designing and implementing innovative software solutions. You will collaborate with cross-functional teams to enhance our platform's scalability, security, and performance, making a significant impact on our global user base.

At Lassie, we are revolutionizing healthcare by creating the AI that powers every health practice.Over a million health practices are spending upwards of $100 billion annually on administrative staff, yet they struggle to recruit enough personnel. The ongoing impacts of COVID-19 have left many offices understaffed, resulting in patients experiencing unanswered calls and confusing bills daily.We envision a future where AI manages the operations of a doctor's office, streamlining administration and facilitating patient interactions.Founded by Steijn Pelle, who played a pivotal role in scaling Robinhood and Coinbase to hundreds of millions in revenue, and Frédéric Renken, a former engineer and the first product hire at Superhuman, we are infusing consumer product excellence into healthcare and transforming the interaction dynamic between doctors and their patients.About the RoleWe are seeking a Software Engineer to take charge of the systems that enhance the entire customer experience: from discovering our services to onboarding and going live.Independent health practices are often overburdened and require better tools. Your role will be crucial in helping them discover Lassie and achieve success swiftly. Collaborating closely with sales and product teams, you will develop infrastructure that ensures smooth deal closures and enables new customers to thrive from day one.This position is perfect for someone who enjoys experimentation, thrives in a fast-paced environment, and desires to see a direct correlation between their efforts and revenue impact.You Will Be a Great Fit If You...Are enthusiastic about experimentation, learning from mistakes, and employing first principles thinking.Develop tools and systems that amplify the effectiveness of sales and engineering teams.Work closely with sales to transform chaotic workflows into streamlined processes.Help shape our marketing strategies, branding, and distribution methods.Engage with technologies such as Python, TypeScript, various databases, serverless environments, and Salesforce, even if some are new to you.Some Things We've BuiltA specialized growth and onboarding infrastructure that has reduced the demo-to-close timeframe from weeks to mere hours.Data pipelines capable of processing over $1 billion in insurance claims.A synchronization engine supported by encrypted SQLite.

About the Role: The Tubi team is dedicated to creating and refining exceptional user interfaces and experiences across our web and OTT applications. Our primary focus is on implementing features that aid in user acquisition and growth, such as user registration, onboarding, SEO optimization, and account management. As a member of this dynamic team, you will collaborate closely with Product and Design teams to innovate and develop cutting-edge, experiment-driven features that significantly enhance the user experience. Your responsibilities will encompass both front-end development and building robust technical architecture to ensure optimal performance and scalability, while continuously exploring engineering-driven features and experiments that can propel user growth. You will leverage technologies such as React, Node.js, GitHub Actions, Terraform, and CDN infrastructure to create and deploy high-performance applications that serve millions of users. This position is hybrid, based in our San Francisco office, and requires you to be present in the office three days a week.

About GustoAt Gusto, our mission is to empower the small business economy. We tackle essential services like payroll, health insurance, 401(k)s, and HR, allowing business owners to concentrate on their passion and their customers. With teams in Denver, San Francisco, and New York, we proudly support over 400,000 small businesses across the nation, while fostering a workplace that reflects and honors the diverse customers we serve. Discover more about our Total Rewards philosophy.About the Role:We are seeking experienced engineers to join our teams focused on enhancing core platform capabilities, optimizing existing systems for scalability, and shaping the future of Gusto's Payroll and Tax systems. As a Principal Software Engineer, you will lead projects from inception to completion, influencing initial feature specifications, optimizing systems towards desired outcomes, executing projects, and maintaining the code that underpins key user experiences. If you are passionate about developing sophisticated software that has a significant impact on the modern economy, we invite you to join us!About the Team:The Payroll team is the core of Gusto’s operations. The Pay Group teams (responsible for payroll and tax) oversee the product, operational, and service aspects that Gusto utilizes to onboard clients, process payroll, calculate taxes and deductions, pay and file with tax authorities, and ensure compliance on behalf of our clients. This domain is intricate and offers opportunities to engage in system design that simplifies processes for both internal and external customers.Sub-Teams:Tax Accuracy: This group is responsible for gathering and maintaining the essential information required to ensure timely and accurate tax payments and filings for our clients, consisting of multiple teams covering various aspects of the process.Ledger: This team is developing a payroll ledger to monitor accrual accounting for payroll-related monetary movements, beginning to support the payroll domain, risk management, payments, and accounting.Engine: This team collaborates closely with the payroll compliance team to facilitate compliant payroll processes, such as minimum wage adjustments and regular pay rates.

At ZoomInfo, we are committed to accelerating careers. We foster a dynamic environment where innovation thrives, empowering you to produce your best work. Our team is dedicated, supportive, and celebrates victories together. With cutting-edge tools that amplify your contributions and a culture that nurtures your ambitions, you'll not only make an impact but also drive change swiftly.As a Principal Software Engineer on our Advertising, Company Intelligence, and Intent team, you will play a pivotal role in designing and implementing the foundational systems that drive our real-time marketing platform. You will work on high-throughput ad infrastructure, large-scale identity resolution, and intelligent systems enhanced by large language models (LLMs), pushing the boundaries of scalability, intelligence, and speed to achieve significant business outcomes.You will join a team engaged in a variety of ambitious and technically challenging projects—from APIs processing tens of billions of events daily to innovative buyer intent algorithms powered by LLMs and a unified B2B identity graph. Your strengths and interests will guide your assignment to initiatives where your impact can be maximized.This role is situated in a high-growth, high-ownership environment at the forefront of modern software engineering, data infrastructure, and applied AI.

Join Crusoe Technologies as a Principal Software Engineer specializing in Software-Defined Networking (SDN). In this pivotal role, you will lead the design and development of innovative networking solutions that leverage SDN technologies. You will work closely with cross-functional teams to enhance our networking capabilities and drive the future of our products.As a thought leader in SDN, you will be responsible for architecting scalable solutions, optimizing performance, and ensuring robust security across our network infrastructure. This is an exciting opportunity to impact the rapidly evolving tech landscape.

Substack is building a platform that enables writers and creators to publish independently, connect directly with their audiences, and maintain creative and economic control. By focusing on a direct subscription model, Substack supports a growing movement in independent publishing, allowing creators to sustain themselves outside traditional media channels. Role overview This Backend Software Engineer position sits within the Activation team. The team’s mission is to design and build features that bring in new readers and help them find content they care about. Work centers on improving how users discover publications, refining onboarding, enhancing notifications, and delivering personalized recommendations. The role also involves running A/B tests on important user flows to understand what drives engagement. Collaboration Engineers at Substack work closely with designers, product managers, and users. This collaboration ensures that the features built genuinely help creators succeed and maintain their independence.

About UsAt Twelve Labs, we are at the forefront of innovation, creating advanced multimodal foundation models that enable machines to understand videos in a human-like manner. Our groundbreaking approach to video-language modeling is setting new benchmarks, enhancing our ability to analyze and interact with diverse media formats.With an impressive $107 million in funding from leading venture capital firms including NVIDIA’s NVentures, NEA, Radical Ventures, and Index Ventures, as well as visionary AI leaders like Fei-Fei Li and Alexandr Wang, we are strategically positioned to drive global innovation. Our headquarters in San Francisco, along with a significant presence in Seoul, illustrates our commitment to reshaping the future of technology.We celebrate the unique journeys of every individual and believe that our diverse backgrounds fuel our creativity and innovation. We invite passionate individuals who share our mission to join us in transforming video understanding and multimodal AI.Role OverviewUnlike typical video engineering roles that focus primarily on enhancing human playback, at Twelve Labs, we engineer video for machine comprehension. This unique approach prioritizes AI model performance over mere perceptual quality. As the Principal Software Engineer for Video Engineering, you will architect and implement our video processing pipelines, overseeing the entire journey from byte ingestion through to playback. Your work will be pivotal in ensuring our systems are efficient, cost-effective, and tailored for AI-driven video intelligence at scale.Your ResponsibilitiesEnd-to-End Ownership: Lead the design and execution of video pipelines, covering ingestion, decoding, chunking, storage, and playback, applicable to both batch and streaming modes.Codec Expertise: Guide the development of decoding strategies, container format management, and codec implementations, ensuring optimal performance for various video types.

Are you ready to push the boundaries of your capabilities?At Coinbase, we are on a mission to enhance economic freedom globally. This ambitious goal challenges us to excel every day as we construct the future of the on-chain platform and the global financial system.We are looking for a unique individual who is not only passionate about our mission but also believes in the transformative potential of cryptocurrency and blockchain technology in modernizing the financial landscape. We seek someone eager to make a significant impact, thrives under pressure, collaborates with exceptional colleagues, and actively seeks constructive feedback to foster personal growth. We want someone who approaches the company's toughest challenges head-on.Our work culture is intense and may not be for everyone. However, if you aspire to shape the future alongside high-performing peers who expect the same from you, there is no better place to be.While many positions at Coinbase embrace a remote-first approach, we are not entirely remote. In-person participation is required periodically throughout the year. We organize team and company-wide retreats multiple times annually to enhance collaboration, connection, and alignment, and attendance is both expected and supported.As we strive to fulfill our mission, we are evolving into an "AI-first" organization, fundamentally rethinking the operations of a global financial institution. Artificial Intelligence is central to this strategy, enhancing our core processes while human experts provide high-level judgment as the system's "function calls".The RoleWe are in search of a visionary Principal Software Engineer with a focus on AI to serve as the technical guiding force for our AI Automation initiatives. You will be responsible for developing Agentic AI systems that drive multiple organization-wide projects, including their foundational elements, orchestration layers, and the tools necessary for every Coinbase team to automate their workflows. Reporting to the VP of Engineering, you will operate with a high degree of autonomy to define the essence of a fully AI-driven enterprise from the ground up.What You’ll DoArchitect Agentic Systems: Innovate and construct sophisticated multi-agent architectures that transition from simple interactions to autonomous execution and intricate reasoning.Tackle the "Hard Problems" of AI: Establish and implement reliable evaluation frameworks, eliminate hallucinations through rigorous data grounding, and build comprehensive solutions.