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. Apollo.io provides sales and marketing teams with easy access to verified contact data for over 270 million B2B contacts, 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. Apollo.io is growing rapidly, with 900% revenue growth since 2021, and is looking for world-class talent to keep building with us.

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

Required:

  • 5+ years of industry experience in backend development and at least 3+ years in frontend 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

Preferred:

  • Experience in Python
  • Experience with Sidekiq
  • Experience with Spark or other distributed processing frameworks
  • Experience with Google Cloud Platform, Databricks, Snowflake, MongoDB, Terraform, Ansible
  • Understanding of Design Systems and experience using them for frontend development

 #LI-JM1

What You’ll Love About Apollo

Besides the great compensation package and culture that thrives in openness and excellence, we invest tremendous effort into developing our remote employees’ careers. The team embraces that we have a sole purpose: to help customers maximize their full revenue potential on the Apollo platform. This mindset opens us up to a lot of creative approaches to making customers successful at scale. You’ll be a significant part of a lean, remote team, empowered to really own your role as a proactive educator. We’re very collaborative at Apollo, so you’ll be able to lean on your teammates, even in adjacent departments, to help you achieve lofty goals. You’ll be supported and encouraged to experiment and take educated risks that lead to big wins. And, you’ll have a whole team remotely by your side to help you do it!

Apply for this Job

* Required

resume chosen  
(File types: pdf, doc, docx, txt, rtf)
cover_letter chosen  
(File types: pdf, doc, docx, txt, rtf)


Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in Apollo.io’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.


Voluntary Self-Identification of Disability

Form CC-305
Page 1 of 1
OMB Control Number 1250-0005
Expires 04/30/2026

Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp.

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

  • Alcohol or other substance use disorder (not currently using drugs illegally)
  • Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
  • Blind or low vision
  • Cancer (past or present)
  • Cardiovascular or heart disease
  • Celiac disease
  • Cerebral palsy
  • Deaf or serious difficulty hearing
  • Diabetes
  • Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
  • Epilepsy or other seizure disorder
  • Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
  • Intellectual or developmental disability
  • Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
  • Missing limbs or partially missing limbs
  • Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
  • Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
  • Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
  • Partial or complete paralysis (any cause)
  • Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
  • Short stature (dwarfism)
  • Traumatic brain injury

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.


Enter the verification code sent to to confirm you are not a robot, then submit your application.

This application was flagged as potential bot traffic. To resubmit your application, turn off any VPNs, clear the browser's cache and cookies, or try another browser. If you still can't submit it, contact our support team through the help center.