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.
Your Role & Mission
As a Sr. Full-stack Engineer at Apollo, you will work with Apollo’s 200M+ Leads data and build features on top of it. You will be responsible for improving the quality of our data and building customer-facing products by coming up with innovative, yet simple, solutions and implementing them end-to-end. This involves building highly scalable web services, an excellent understanding of software design and databases, and a solid grasp of frontend engineering. You will be a critical part of our growing company, working on a cross-functional team to implement and drive best practices in technology, architecture, and process. In this role, you will interface with a product, design, software engineers, and members on teams outside of Engineering. At Apollo, we are obsessed with improving quality, automation, and squashing any bugs that sneak through, and we expect the same from you. You have a drive to investigate performance improvements and generate innovative ideas constantly.
Our tech stack is React/Redux/NodeJS on the front-end, Ruby/Ruby on Rails/Python/MongoDB/Elasticsearch on the backend, and Kubernetes/Docker/Ansible/Terraform for infrastructure. We use Google Cloud Platform as our cloud provider.
Daily Adventures and Responsibilities
- Design, implement, test, deploy and iterate on end to end features in our products covering both frontend and backend
- Implement "pixel perfect" design as delivered by our designers that works across different browsers, according to specifications provided
- Produce "clean" and well-structured code, with detailed specifications and documentation.
- Help maintain code quality, organization, automation and continuous delivery
- Effectively communicate development progress or blockers to the product lead, engineering manager, and other stakeholders
- Work effectively as part of a large global team • Attend and engage in scrum ceremonies, oncall, and other team processes
- Write unit/integration tests and contribute to engineering wikis
Competencies
- Customer driven: Attentive to our customers’ needs and strive to deliver a seamless and delightful customer experience.
- High Impact: Understand what the most important customer metrics are and find the right direction to impact them by working with Product Managers and through multiple agile iterations
- Ownership: Have ownership of projects from start to finish, make sure to have high quality implementation, and have urgency to move fast and find the most efficient ways to iterate
- Team Mentorship & Sharing: Able to up-level the team by sharing knowledge and best practices with the engineering team
- Agility: Organized and able to effectively plan and breakdown large projects into smaller tasks that are easier to estimate and deliver. Can lead fast iterations
- Speak and Act Courageously:aren’t afraid to fail, aren’t afraid to challenge status quo, speak up for contrarian view
- Focus and Move with Urgency: Able to prioritize for impact and move fast to deliver experiment, features to achieve customer value
- Intelligence: Learns quickly. Demonstrates ability to quickly and proficiently understand and absorb new codebase and frameworks.
Skills & Relevant Experience
- 5+ years of industry experience in Frontend development and at least 3+ years in backend development
- Solid understanding of Ruby, Ruby on Rails, JavaScript (ES6), React, Redux, HTML, and CSS
- Strong system design fundamentals and experience building scalable systems
- Good understanding of software development lifecycle
- Strong analytical and problem-solving skills
- Proven software engineering skills in production environment, including test-driven development
- Experience with Cypress in writing meaningful tests
- Your code is comprehensible, well-structured, and highly performant
- Experience or willingness to work on Web Browser Extensions is a plus.
At Apollo, we’re driven by a shared mission: to help our customers unlock their full revenue potential. That’s why we take extreme ownership of our work, move with focus and urgency, and learn voraciously to stay ahead.
We invest deeply in your growth, ensuring you have the resources, support, and autonomy to own your role and make a real impact. Collaboration is at our core—we’re all for one, meaning you’ll have a team across departments ready to help you succeed. We encourage bold ideas and courageous action, giving you the freedom to experiment, take smart risks, and drive big wins.
If you’re looking for a place where your work matters, where you can push boundaries, and where your career can thrive—Apollo is the place for you.
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