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Senior Backend Engineer

Remote, United States

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.

OUR ROLE & MISSION
 
As a Sr. Backend Software Engineer, you will be a critical part of our growing company, working on a cross-functional team to implement best practices in technology, architecture, and process. 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. In this role, you will be interfacing with design, front-end, analytics, as well as teams outside of Engineering. You enjoy working cross functionally to solve hard problems and make an impact. At Apollo, you strive for quality, and are obsessed with improving quality, automation, and squashing any bugs that sneak through. You have a drive to constantly investigate performance improvements and innovative ideas.
 
 
OUR TECH STACK
  • Frontend: React/Redux/Node.js
  • Backend: Ruby/Ruby on Rails/MongoDB/Redis/Elasticsearch
  • Infrastructure: Kubernetes/Docker/Ansible/Terraform in infrastructure
 
DAILY ADVENTURES & RESPONSIBILITIES
  • Design and implement highly scalable backend endpoints
  • Deliver features/systems to customers to improve customer metrics
  • Gather product requirements and write eng design docs to satisfy product needs
  • Drive/Lead full lifecycle of software development: product requirements, architecture, solution design, development, quality assurance, and maintenance
  • Deliver high quality implementations and promote engineering excellence within the team
  • Mentor others on best practices and effectively share knowledge
  • Ability to effectively communicate development progress to the product lead, engineering manager, and other stakeholders
  • Be comfortable introducing new technologies and new ideas as required
  • Work effectively as part of a large global team
  • Lead spring planning for your ownership areas and drive execution
  • Mentor junior engineers with feedback and technical guidance and respond to technical and behavioral feedback from managers and peers
 
QUALIFICATIONS
  • Minimum 5 years of industry experience in backend development, at least 1-2 years in senior positions, developing large-scale applications
  • Experience developing distributed web applications
  • Your code is comprehensible, well-structured, highly performant
  • Experience with database modeling (SQL or NoSQL both OK)
  • Experience with using and designing RESTful services
  • Strong knowledge of computer science fundamentals, including data structures, algorithms, and object-oriented design
 
#LI-SD1

Why You’ll Love Working at Apollo

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.

As a remote-first company, 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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