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Who We Are Sendoso is where you go to build something bigger than yourself. We’re a Series C company with $154M in venture capital funding with more than 800+ customers and 20,000 active users, and multiple revenue streams. Our company is on an unprecedented growth trajectory and we’re looking for people who want to do great things. Sendoso is the leading Sending Platform that delivers modern direct mail, personalized gifts, eGifts, and other Physical Impressions™ at scale. This makes it possible to build stronger, deeper, and more trusted relationships that move everything up and to the right! Our award-winning Sending Platform connects online and offline experiences via cloud software, automation, and real-world logistics, a feat that few companies have achieved. Our mission statement is to help companies rise above the noise by eradicating spam and elevating relationships. Our goal is to enable businesses everywhere to make more human connections in a digital world. About the Role As a Staff Software Engineer at Sendoso, you’ll play a critical role in shaping the architecture and technical strategy of our platform. You will work closely with product managers, designers, and other engineers to deliver scalable solutions, mentor senior engineers, and drive cross-team initiatives. This role is both hands-on and strategic, ideal for someone who thrives on solving complex problems and guiding technical direction across multiple domains. What You’ll Do Lead the design and development of highly scalable, reliable, and secure systems. Define and drive technical standards, best practices, and long-term architecture across multiple engineering teams. Partner with product and business stakeholders to translate complex requirements into technical execution plans. Mentor and coach engineers at all levels, fostering growth and technical excellence. Conduct design and code reviews to ensure quality, maintainability, and performance. Proactively identify system bottlenecks, risk