Senior Software Engineer, Growth

Apollo.io is the leading go-to-market solution for revenue teams, trusted by over 500,000 companies and millions of users globally, from rapidly growing startups to some of the world's largest enterprises. Founded in 2015, the company is one of the fastest growing companies in SaaS, raising approximately $250 million to date and valued at $1.6 billion. Apollo.io provides sales and marketing teams with easy access to verified contact data for over 210 million B2B contacts and 35 million companies worldwide, along with tools to engage and convert these contacts in one unified platform. By helping revenue professionals find the most accurate contact information and automating the outreach process, Apollo.io turns prospects into customers. Apollo raised a series D in 2023 and is backed by top-tier investors, including Sequoia Capital, Bain Capital Ventures, and more, and counts the former President and COO of Hubspot, JD Sherman, among its board members. **This is a Permanent role ("Umowa o pracę") and not a B2B contract** As a Senior Software Engineer on the Growth team , you will be a critical part of our growing company, working at the intersection of engineering, product, marketing, and data science to accelerate product growth through rapid experimentation, data analysis, and scalable technical solutions. You’ll implement and drive best practices in technology, architecture, and process while optimizing funnels, automating growth loops, and shipping features that drive measurable impact. You’ll have the chance to work in an open and collaborative environment, receive and give hands-on mentorship, and have opportunities to grow and accelerate your career. You love both learning and teaching, enjoy working cross-functionally to solve hard problems, and strive for quality — obsessing over automation, performance, and squashing any bugs that sneak through. Our tech stack: Ruby/RoR, React.js, TypeScript, Redux, Node.js, Python, MongoDB, Elasticsearch, Ansible, Terraform