# Senior Software Engineer, Growth

**Company:** [Apollo](https://hotfix.jobs/companies/apollo)
**Location:** Remote
**Role:** Fullstack Engineering
**Experience:** 5+ years
**Skills:** JavaScript, TypeScript, React, Redux, HTML, CSS, Ruby on Rails, Python, Node.js, AWS, GCP, REST APIs, MongoDB, Elasticsearch, Kubernetes
**Posted:** 2026-08-21

> Build scalable growth systems and experimentation capabilities across onboarding, personalization, analytics, and engagement. The role requires 5+ years of frontend or full-stack experience, strong JavaScript/TypeScript and React skills, backend proficiency, cloud experience, and a data-driven product mindset.

## Job Description

## Responsibilities
- Develop and execute engineering strategies that enable rapid experimentation and data-driven decision-making.
- Collaborate with Product, Design, Marketing, Data Science, and Engineering to optimize growth metrics and support core product initiatives.
- Architect and build scalable systems for onboarding flows, personalization engines, and viral loops.
- Implement A/B testing and data instrumentation to measure experiments accurately.
- Use automation and machine learning to optimize engagement, reduce churn, and personalize user experiences.
- Produce clean, structured, documented code and implement cross-browser, pixel-perfect designs.
- Maintain code quality, automation, and continuous delivery.
- Ensure performance, security, and scalability through engineering best practices.
- Communicate progress and blockers with stakeholders and participate effectively in a global team.
- Give and receive constructive feedback.

## Requirements
- Proven experience using AI tools for code generation, debugging, and productivity optimization.
- Bachelor of Science in Computer Science or equivalent experience.
- At least 5 years of industry experience in frontend or full-stack development building large-scale applications.
- Proficiency with JavaScript (ES6)/TypeScript, React, Redux, HTML, CSS, and at least one backend language: Ruby/Rails, Python, or Node.js.
- Experience with AWS or GCP and REST APIs.
- Experience with analytics tools and A/B testing platforms.
- Familiarity with growth frameworks and viral loops.
- Strong UX and product sense, including MVP definition.
- Attention to performance, accessibility, and scalability.

## Nice-to-haves
- Growth experience at a startup or scaling product.
- Knowledge of SEO, CRM tools such as Braze or HubSpot, or marketing automation.

## Compensation and Benefits
- Permanent employment under an employment contract (Umowa o pracę), not a B2B contract.
- Hands-on mentorship, career growth opportunities, autonomy, and a collaborative cross-functional environment.

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**Canonical:** https://hotfix.jobs/jobs/869e6ccb-0650-44a4-b605-b5a27dc1fb5c