Oxigen

We’re looking for a hands-on Head of Growth to lead and scale customer acquisition, performance marketing, funnels, and retention across a fast-growing DTC eCommerce brand.

This is an operator role for someone who can move fast, think strategically, and stay deeply involved in execution. You’ll work closely with founders and creative teams to drive growth through experimentation, optimization, and strong performance systems.
 

What you’ll do:

• Own growth strategy across acquisition, retention, and conversion
• Scale paid social channels including Meta and TikTok
• Launch, test, and optimize campaigns, creatives, funnels, and landing pages
• Improve CRO and customer journey performance across the funnel
• Analyze performance metrics and identify growth opportunities
• Work closely with creative, content, and operations teams
• Build reporting systems and maintain clear visibility into KPIs
• Drive fast experimentation and continuous iteration across channels

Requirements:

• 5–8+ years of experience in growth, performance marketing, or digital marketing
• At least 3+ years working with DTC / eCommerce brands
• Strong hands-on experience with Meta Ads and TikTok Ads
• Deep understanding of performance marketing, funnels, CRO, and retention
• Strong analytical mindset with attention to metrics and data
• Comfortable managing multiple workstreams in a fast-paced environment
• Clear communicator with strong ownership mentality
• Preferably experience working directly inside brands rather than agency-only background
   

Nice to have:

• Experience scaling consumer brands
• Experience with subscription or retention-focused products
• Familiarity with Klaviyo, Shopify, GA4, Triple Whale, or similar tools
• Experience working with creative testing systems and UGC workflows
   

Why join:

• High ownership and direct impact on growth
• Fast-moving team with strong execution culture
• Ability to influence strategy and build systems from scratch
• Remote and flexible work environment

We are hiring on behalf of our client — an American media company with an office in Warsaw. They run a large newsletter operation sending millions of emails a day to cold audiences across multiple verticals. Getting into the inbox is the difference between revenue and noise, and this role owns that outcome end to end.
 

The role

This is a hands-on, deeply technical role for someone who lives and breathes deliverability. You will work directly with the Head of Project and the production manager, and guide marketers on every decision that touches deliverability: infrastructure, authentication, content, segmentation, and sending strategy.

You will not be directing a team to do the work. You will be in the DNS, in the headers, in the seed data, and in the postmaster tools yourself. The two things measured above everything else are inbox placement and the speed at which deliverability issues get resolved.
 

What you will own

• Inbox placement and sender reputation
• Infrastructure and authentication (SPF, DKIM, DMARC, BIMI, IP and domain warming, feedback loops)
• ESP strategy and operations — configuration, optimization, migration
• Cold audience deliverability
• Marketer guidance and enablement
• Monitoring, reporting, and incident response
   

Must-have

• 6+ years in email deliverability as your primary focus — not as a side responsibility
• Hands-on experience operating at 5M+ sends per day
• Proven track record diagnosing and fixing real placement issues at scale
• Experience sending to cold audiences
• Technical fluency with postmaster tools across major mailbox providers
• Deep expertise across major ESPs
• Excellent English, C1 or above
   

Nice to have

• Direct newsletter experience with promotional content at scale
• Experience using AI tools for deliverability work
• Existing relationships with deliverability teams at major ESPs and mailbox providers
• Background in performance marketing, affiliate, or media
   

Compensation and benefits

• Competitive salary + bonuses
• 21 paid vacation days, 14 paid sick days
• Hybrid format, Warsaw office
• Corporate library, team activities

About the project
 

US-founded media company operating email newsletters at scale – millions of subscribers across finance, health, and business verticals. Small engineering team, flat structure, direct ownership, fast iteration. No layers of approval, no large org to navigate.

You'll own the AI layer of the automation platform alongside a counterpart engineer who handles integration and infrastructure.
 

What you'll work on

• AI-driven content generation and management workflows at production scale
• Agent systems coordinating multi-step operational tasks: content, QA, validation, reporting
• RAG pipelines over internal knowledge bases and operational data
• Prompt architectures designed for reliability, cost control, and measurable output quality
• Evaluation and regression testing for LLM systems — "it looked fine when I tested it" isn't good enough
   

Real production systems, not demos. The work removes hours of manual operational work daily and needs to be reliable enough that people actually trust it.
 

Requirements

• 6+ years of development experience
• 4+ years of production Python
• 2+ years shipping production systems with LLMs and agents
• Solid understanding of what happens underneath the frameworks: tokenization, context windows, function calling, when RAG helps and when it doesn't
• Hands-on with agent orchestration: LangChain, LangGraph, MCP, or equivalent
• Clean, maintainable Python – frameworks support your thinking, not replace it
   

Tech stack

Python · FastAPI · PostgreSQL · LLM APIs (OpenAI, Anthropic) · LangChain / LangGraph / MCP · vector databases · Playwright · Docker · proxy infrastructure
 

Conditions

• B2B contract, full-time
• Warsaw office (onsite preferred, remote considered)
• Direct collaboration with technical PM and small senior team
• Fast-moving environment: ambiguity, shifting priorities, growing scope