Senior Software Engineer

Apollo.io

About The Position

As a Senior Software Engineer at Apollo.io, you will be a critical part of a growing company, working on a cross-functional team to implement best practices in technology, architecture, and process. You will 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. The role involves working across two high-impact domains: data platform architecture and integrations with distributed systems, building the infrastructure that powers Apollo’s AI-driven internal products. On the data side, you will organize and make sense of data at scale, working closely with the data engineering team to structure pipelines and enable intelligent product experiences. On the integrations side, you will own the connections layer and the distributed architecture that keeps Apollo reliably linked to the broader ecosystem at high throughput. The ideal candidate enjoys working cross-functionally to solve hard problems and make an impact, striving for quality and being obsessed with improving automation, squashing bugs, and investigating performance improvements and innovative ideas. An AI-first mindset is expected, reaching for AI tools as naturally as any other part of the workflow and helping the team do the same.

Requirements

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 at scale
Code that is comprehensible, well-structured, and highly performant
Experience with database modeling (SQL or NoSQL)
Experience using and designing RESTful services
Strong knowledge of computer science fundamentals, including data structures, algorithms, and object-oriented design
Proven experience leveraging AI tools to enhance software development processes, including code generation, debugging, and productivity optimization, with a willingness to stay current with emerging AI technologies
Background in fast-scaling startup or high-velocity environments where going beyond your job title was the norm
Communication Skills
Problem Solving
Proactivity
Team Player
Listening Skills
Creativity and Innovation
Organization and Planning
Dealing with Ambiguity
Ownership of projects from start to finish
Distributed Web Development

Nice To Haves

BS or MS degree in Computer Science, Computer Engineering or similar
GCP
Kubernetes
Docker
Mongo
Redis
Ruby on Rails
Microservices
Machine Learning

Responsibilities

Design and implement highly scalable backend services, data pipelines, and integration endpoints that perform reliably at high volume
Gather product and engineering requirements; write design documents and drive technical discussions to align cross-functional stakeholders
Drive and lead the full software development lifecycle: product requirements, architecture, solution design, development, quality assurance, and maintenance
Build systems with observability as a first-class concern proper monitoring, alerting, and dashboards so issues are caught before customers notice
Mentor others on best practices and effectively share knowledge across the engineering team
Communicate development progress clearly to product leads, engineering managers, and other stakeholders
Be comfortable introducing new technologies and new ideas as required, including AI tools that accelerate your workflow and the team’s
Navigate ambiguity and roadblocks proactively when a project hits a wall, you find a path forward and maintain cadence
Work effectively as part of a large global team, attending scrum ceremonies, team events, and manager 1:1s
Provide and respond to technical and behavioral feedback from managers and peers in written and verbal form

Benefits

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.
Encourage bold ideas and courageous action, giving you the freedom to experiment, take smart risks, and drive big wins.

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