← All roles

Senior Fullstack Software Engineer

Apollo.io· Engineering
Apply on company site
Remotefull-timePosted 11mo ago

About the role

Senior Full-Stack Software Engineer at Apollo.io, focusing on implementing best practices in technology, architecture, and process across a cross-functional team, working remotely from the US.

Responsibilities

  • Collaborate with CTO and CEO to design, iterate upon, as well as implement core product initiatives.
  • Front-end development in React/Redux/NodeJS/ES6, SCSS.
  • Backend development of RESTful services in Ruby on Rails, MongoDB, and Elasticsearch.
  • Scaling existing backend systems to handle ever increasing amounts of traffic and new product requirements.
  • Create internal tools to help our sales and support teams guide our customers to success.

Qualifications

  • Full-stack engineering experience in Ruby/Ruby on Rails, Java, JavaScript, Python/Django.
  • Experience with database modeling (SQL and/or NoSQL).
  • Minimum of 5 years of industry experience in engineering.
  • Evidence of exposure to architectural patterns of a large, high-scale web application (e.g., well-designed APIs, high volume data pipelines, efficient algorithms).
  • Ability to take complex product goals and efficiently deliver working software in logically consumable pieces.
  • Creative and innovative problem solver with experience working in a startup environment.

Skills

Required:JavaJavaScriptNode.jsReactRuby on Rails

Benefits

  • Remote work from anywhere in the world.
  • Focus on solving impactful problems.
  • Collaborative open environment with mentorship and growth opportunities.
  • Less time dealing with processes, systems, and commuting.
Last updated Mar 18, 2026. Interested? Apply on the company site.
Apollo.io logo

About Apollo.io

Apollo is the foundation of your entire go-to-market strategy.

Founded in 2015, Apollo.io is a lead intelligence and sales engagement platform trusted by nearly 9,000 paying customers, from rapidly growing startups to some of the largest global enterprises. Our community-based approach to crowdsourcing data gives users maximum coverage while ensuring data accuracy. Our advanced algorithms and unique data acquisition methods help over 500,000 sales professionals enrich and analyze prospects' data to increase quality conversations and opportunities. We have notable investors: Y Combinator and Nexus Venture Partners. We recently completed a Series B financing to fuel our next growth phase. We have reached and maintained profitability for the last 18 months. Our growth and customer feedback set us apart from competitors. Apollo had over one million sign-ups for its platform in the past year, and the number of weekly active users increased by over 400%. We are a top-ranking G2 Crowd vendor in the Sales Intelligence, Lead Intelligence, Marketing Account Intelligence, and Sales Engagement categories. Our highest scores are in the B2B data space for accuracy and ROI based on customer reviews.

brex-fastest-growing-2025marketingsales

More open roles at Apollo.io