Senior Software Engineer, Growth

Apollo.io; Poland; Remote; PLN 240,000 - 360,000; Full time

Benefits offered by this job

AI-native culture

Mentorship and growth opportunities

Competitive equity and benefits

Job summary

Apollo.io is seeking a Senior Software Engineer on the Growth team to accelerate product growth through rapid experimentation and data-driven decisions. You will build scalable systems, drive automation, and own features from idea to production within a collaborative, AI-native environment.

You will work across Product, Design, Marketing, and Data Science to optimize funnels, personalize experiences, and measure impact with robust analytics and A/B testing.

Qualifications

• BS in Computer Science or equivalent.
• Minimum 5 years of frontend or full-stack development.
• Experience with cloud infrastructure (AWS/GCP) and REST APIs.
• Familiar with analytics tools (Amplitude, Mixpanel, GA) and A/B testing platforms.
• Strong UX sense and growth-centric mindset.

Responsibilities

• Develop growth-focused engineering strategies and experiments.
• Collaborate with product, design, marketing, data science, and engineering.
• Architect scalable systems to support onboarding and viral loops.
• Implement A/B testing and data instrumentation.
• Leverage AI tools to boost productivity and code quality.
• Maintain code quality, automation, and CI/CD pipelines.
• Communicate progress to stakeholders and align with leadership.
• Operate effectively in a large global team and seek continuous feedback.
• Own shipped features and uphold performance, security, and scalability.

Skills

React.js

TypeScript

Node.js

Ruby on Rails

REST APIs

AWS/GCP

Docker

Kubernetes

MongoDB

Data analysis

Education

BS in Computer Science

Tools

Ruby on Rails

React.js

TypeScript

Redux

Node.js

Python

MongoDB

Elasticsearch

Terraform

Grafana

Kibana

Docker

Kubernetes

AWS

GCP

GitHub Actions

Job description

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.

**This is a Permanent role (\"Umowa o pracę\") and not a B2B contract**

As a Senior Software Engineer on the Growth team, you will be a critical part of our growing company, working at the intersection of engineering, product, marketing, and data science to accelerate product growth through rapid experimentation, data analysis, and scalable technical solutions. You’ll implement and drive best practices in technology, architecture, and process while optimizing funnels, automating growth loops, and shipping features that drive measurable impact.

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, enjoy working cross-functional to solve hard problems, and strive for quality — obsessing over automation, performance, and squashing any bugs that sneak through.

Our tech stack:Ruby/RoR, React.js, TypeScript, Redux, Node.js, Python, MongoDB, Elasticsearch, Ansible, Terraform, Grafana, Kibana, Docker, Kubernetes, AWS/GCP, GitHub Actions.

Daily Adventures and Responsibilities

• Develop and execute engineering strategies that enable rapid experimentation and data-driven decision-making
• Collaborate cross-functionally with Product, Design, Marketing, Data Science, and Engineering to optimize key growth metrics and contribute to core product initiatives
• Architect and build scalable systems that support growth initiatives, such as onboarding flows, personalization engines, and viral loops
• Implement A/B testing and data instrumentation to ensure accurate tracking and measurement of experiments
• Leverage automation and machine learning to optimize user engagement, reduce churn, and personalize user experiences
• Help maintain code quality, organization, automation, and continuous delivery
• Ensure technical excellence through best practices in performance optimization, security, and scalability
• 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 stand-ups, team meetings, and manager 1:1s
• Give and receive constructive feedback and praise
• Proactively acts without being told what to do; identifies areas of improvement and drives best practices to deliver high-quality, performant, scalable solutions
• Takes ownership over everything shipped
• Communicates effectively, clearly, and concisely — technical and non-technical, written and verbal — and actively listens to ensure understanding
• Helps teammates overcome obstacles, resolve blockers, and complete work; shares credit where due
• Actively seeks out and acts on feedback as a tool for growth
• Confident in owning their role and bringing creative ideas to users
• Excellent leadership and stakeholder management skills
• Comfort with ambiguity and a bias toward action; obsession with metrics (LTV, CAC, retention) and rapid iteration
• Proven experience leveraging AI tools to enhance software development (code generation, debugging, productivity optimization), with fluency integrating AI‑driven solutions into your workflow and a willingness to stay current with emerging AI technologies
• BS in Computer Science, or equivalent
• Minimum 5 years of industry experience in frontend or full-stack development, building large-scale applications
• Experience with cloud infrastructure (AWS/GCP) and REST APIs
• Experience with analytics tools (Amplitude, Mixpanel, Google Analytics) and A/B testing platforms (e.g., Optimizely, LaunchDarkly, Segment)
• Familiarity with growth frameworks (e.g., Pirate Metrics, viral loops)
• Strong UX and product sense, with the ability to negotiate the right MVP
• Strong attention to detail; interest in building UI with performance, accessibility, and scalability in mind

Nice-to-Haves

• Experience with growth at a startup or scaling product
• Knowledge of SEO, CRM tools (Braze, HubSpot), or marketing automation

We are AI Native

Apollo.io is an AI-native company built on a culture of continuous improvement. We’re on the front lines of driving productivity for our customers—and we expect the same mindset from our team. If you're energized by finding smarter, faster ways to get things done using AI and automation, you'll thrive here.

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.

We invest deeply in your growth, ensuring you have the resources, support, and autonomy toown 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.