Oxigen

Our client is a full-service media buying and advertising company running a global ad network across push, native, popunder, and in-page formats. The team works from offices in Prague and Warsaw plus remote hubs across Europe and beyond, bringing together decades of combined expertise in digital advertising.

The business has built a strong, fast-growing demand side and is now looking for a Chief Commercial Officer to own that growth engine. The mission of the role is to drive stable growth of company income by building a scalable, high-performing demand organization.

Key goals for the first stretch in the role:

• Audit the current demand function and define a growth strategy
• Build a full advertiser lifecycle process: sales, launch, account management, scaling, retention, reactivation
• Grow demand department spend to $1.5M+ monthly
   

Requirements

• 10+ years in digital marketing (ad network / affiliate network), including 5+ years in a leadership role
• 5-7+ years of overall commercial experience
• Proven experience building or scaling demand/sales units
• Track record managing revenue in the $5M-$10M range
• Deep understanding of direct demand/supply and RTB/programmatic advertising
• Experience managing teams of 30+
• Experience implementing KPI and motivation systems
• Strong sales and negotiation skills
• English B2+
   

Responsibilities

• Team development Hire and develop key talent, build a scalable commercial structure, set KPIs and motivation systems, run performance reviews.
• Sales & growth management Own the full advertiser lifecycle (sales, launch, account management, scaling, retention, reactivation). Control and grow key metrics: new revenue, LTV, ARPU, churn.
• Strategy Develop and execute the demand strategy. Define priority GEOs, verticals, and segments. Identify new growth opportunities and scale spend.
• Process Build and optimize the end-to-end funnel. Own CRM/pipeline hygiene, conversion rates, and deal cycle. Set up cross-team workflows within the department.
• Cross-department collaboration Sync with Traffic, CPA, RTB, Product, and Marketing teams. Shape product requirements from the demand side.
   

Benefits

• Full-time role, remote / hybrid / office format, work from anywhere
• Ownership of demand strategy end-to-end, from audit to execution
• 28 working days of vacation (not calendar days)
• Additional paid leave for family events
• 10 days of sick leave with medical certificate + 3 sick days without one
• Access to internal Academy courses for professional growth
• Modern offices in Prague & Warsaw for those who prefer hybrid/office
• Top equipment, paid tools and programs
• Fully paid participation in professional conferences

We’re building and scaling a high-volume, performance-driven newsletter portfolio and are looking for a Senior Email Marketing Manager to fully own newsletter growth, engagement, and monetization.

This role is for someone who understands newsletters as a revenue channel, not just a publishing task.

You’ll work closely with authors, AI writers, designers, and monetization partners to ensure every send is optimized for opens, clicks, and revenue, while maintaining strong editorial quality.

Your primary mission:
 

Key Responsibilities

Email & Newsletter Performance Ownership

• Own end-to-end newsletter strategy, publishing, and optimization
• Optimize subject lines, preheaders, layouts, CTAs, and content flow
• Maintain consistent, high-quality publishing schedules across all newsletters
• Review, QA, and approve all outgoing content before sending

 Monetization & Advertising Optimization

• Integrate ads natively within newsletters to maximize CTR and revenue
• Test ad placements, formats, and messaging without harming reader trust
• Analyze performance and continuously improve monetization strategy

Scaling & Team Leadership

• Collaborate closely with writers, AI tools, designers, and growth teams
• Build repeatable processes, guidelines, and quality standards
• Provide weekly performance insights and improvement recommendations
   

Requirements

• Strong experience in email marketing
• Deep understanding of email performance metrics: open rate, CTR, conversions, revenue per send
• Hands-on experience managing multiple email campaings at scale
• Comfortable using AI tools
• Strong editorial and layout instincts (formatting, hierarchy, readability)
• Excellent organization — able to manage 15–20+ newsletters simultaneously
• Strong QA mindset: zero tolerance for broken links, typos, or formatting errors
• High level of English: C1
   

Nice to Have

• Experience with platforms like Beehiiv, Substack, Ghost
• Experience working with ad monetization, sponsorships, or affiliate content
• Background in content-led growth or digital publishing
• Experience scaling multiple content brands or media products

We are hiring on behalf of our client – an American media company with an office in Warsaw. They run large-scale newsletter and web operations across finance, health, and business verticals. The design team ships high-volume landing pages and web properties that directly impact revenue. Speed and quality are the two things measured above everything else.
 

The role

This is a leadership role at the intersection of design, marketing, and execution. You will own the design pipeline end to end: leading projects from brief to launch, managing and developing a team of designers including leads who report into you, and acting as the central traffic manager for all design work across the operation.

You are not just coordinating. You are setting the creative direction, reviewing work in progress, pushing the standard higher, and making sure nothing loses momentum. You bring your own point of view on what makes a page convert — and you apply it every day.
 

What you will own

• Design projects end to end: brief, creative direction, review, launch
• Traffic management for all design requests across the operation
• Team development: regular reviews, feedback, skill plans, hiring
• Conversion thinking: you know what makes a page perform, not just look good
• Design systems and workflows: briefs, review cycles, handoffs, version control
   

Must-have

• 4+ years in design project management, creative operations, or a similar leadership role at a fast-paced agency or in-house team
• Strong understanding of web design and design fundamentals — you give useful feedback and tell good work from average
• Strong understanding of marketing and conversion — landing pages, not just aesthetics
• Proven experience leading and developing a design team, not just coordinating one
• Ability to traffic-manage high-volume design work across multiple projects simultaneously
• AI-first operator — you already use AI across ideation, briefing, research, image generation, and project management. This is your default, not an experiment
• C2 English, written and verbal
   

Nice to have

• PM certification (PMP, PRINCE2, Scrum, or equivalent)
• Hands-on Figma proficiency
• Experience integrating AI tools into a design team workflow: Midjourney, AI copy, automated briefing, AI-assisted design
• Experience with Notion, ClickUp, Asana, or similar
• Background in performance marketing, affiliate, newsletter, or media
   

Compensation and benefits

• Competitive salary + bonuses
• 21 paid vacation days, 14 paid sick days
• Hybrid format, Warsaw office
• B2B contract, company covers taxes

Our client is a mobile gaming company building 2D games for iOS audiences worldwide. Their Unity team is responsible for gameplay systems, UI, animations, and the full in-game experience. They ship fast, iterate based on data, and build with modularity in mind.
 

We are looking for an experienced Unity Engineer who has shipped mobile games and knows the platform constraints cold. You'll be building and maintaining gameplay systems, implementing animations and UI, and working with Addressables to keep builds clean and modular. Strong C# and a practical mindset are a must.
 

Responsibilities

• Develop and maintain gameplay features, UI systems, and animations in Unity
• Work with Unity Addressables and Unity Package Manager to manage assets and dependencies
• Optimize game performance for mobile hardware (memory, draw calls, load times)
• Collaborate with game designers to implement and iterate on game mechanics
• Write clean, maintainable C# with an eye on scalability
• Use AI tools daily to accelerate implementation and reduce repetitive work
• Participate in code reviews and contribute to technical documentation
   

Requirements

• 5+ years of experience building mobile games in Unity
• Strong C# skills
• Deep knowledge of Unity's scripting APIs, 2D tools, UI systems, and animation
• Hands-on experience with Unity Addressables and Unity Package Manager
• Understanding of mobile performance constraints and optimization techniques
• Daily use of AI tools and coding agents
• English: Upper-Intermediate or higher (B2+)
   

Nice to have

• Experience with live ops or games-as-a-service products
• Familiarity with analytics integration or A/B testing frameworks in games
   

Conditions

• Full-time or part-time (3 days/week)
• Remote with occasional travel to team offsites

 Our client is a mobile gaming company shipping consumer iOS games to a global audience. Quality is a first-class concern for them — they test deep, break things early, and ship with confidence. The QA team is embedded in the product process from day one, not bolted on at the end.

About the role We are looking for an experienced QA Engineer who knows iOS mobile inside out. You will own the testing of complex game flows, validate API contracts, dig into databases, and use proxy tools to understand exactly what's happening under the hood. If you love breaking things and have the receipts to prove it, this role is for you.

Responsibilities

• Design and execute test plans for iOS mobile game features (functional, regression, edge cases)
• Use proxy tools (ProxyMan, Charles) to intercept and analyze network traffic
• Test APIs via Postman and Swagger; validate backend responses against front-end behavior
• Work directly with databases to verify data integrity and game state
• File clear, reproducible bug reports and follow them through to resolution
• Identify gaps in coverage and push for better testability at the product level
• Integrate AI tools into QA workflows to improve coverage speed and test case generation
   

Requirements

• 5+ years of QA experience with a focus on iOS mobile apps
• Hands-on experience with proxy tools (ProxyMan, Charles, or equivalent)
• API testing with Postman and/or Swagger
• Proficiency with database querying and management tools
• Solid understanding of iOS platform behavior, OS versions, and device-specific quirks
• Daily use of AI tools in QA work
• English: Upper-Intermediate or higher (B2+)
   

Nice to have

• Experience testing mobile games
• Familiarity with game mechanics, economies, or live ops testing
   

Conditions

• Full-time or part-time (3 days/week)
• Remote with occasional travel to team offsites

Our client is a mobile gaming company building consumer iOS games with real traction. Their mobile team owns the full product experience: from onboarding to core gameplay to retention mechanics. They care about performance, craft, and shipping things users actually love.

We are looking for a senior iOS Engineer with a strong track record on consumer apps. You've shipped products with real user bases, you understand what makes an app feel native and polished, and you can work independently without needing everything spelled out. 
 

Responsibilities

• Build and maintain core iOS features using Swift and native iOS frameworks
• Collaborate with game designers and backend engineers to implement game flows
• Own performance, memory, and battery usage on your features
• Conduct code reviews and raise the bar for iOS quality across the team
• Actively use AI coding agents to accelerate development and reduce boilerplate
• Contribute to technical decisions around architecture and tooling
   

Requirements

• 5+ years building consumer iOS apps (shipped products on the App Store with real user bases)
• Native iOS development with Swift
• Strong understanding of UIKit and/or SwiftUI
• Experience with app performance profiling and optimization
• Comfortable working async with distributed teams
• Daily use of AI tools and coding agents
• English: Upper-Intermediate or higher (B2+)
   

Conditions

• Part-time (3 days/week)
• Remote with occasional travel to team offsites

Our client is a mobile gaming company building consumer-facing products played by millions of users. Their backend powers real-time game mechanics, player data, in-app economies, and live operations at scale. They move fast, ship often, and rely heavily on AI tooling to stay lean and effective.
 

 We are looking for a seasoned Backend Engineer to join the core platform team. You will design, build, and maintain the services that keep their games running reliably at high load. This is a hands-on engineering role with real ownership, not ticket-pushing.
 

Responsibilities

• Design and develop scalable backend services using Java and Spring Framework
• Build and maintain data pipelines and event-driven systems with Kafka
• Own the reliability and performance of PostgreSQL and Redis-based infrastructure
• Contribute to microservices architecture decisions and cloud (AWS) operations
• Work closely with game, mobile, and DevOps engineers to ship features end-to-end
• Actively use AI coding agents in daily development to increase throughput and quality
   

Requirements

• 5+ years of backend engineering experience
• Strong Java skills with hands-on Spring Framework (Core, Boot, Web, Security)
• PostgreSQL and Redis in production environments
• Kafka for async/event-driven communication
• Docker and containerized deployments
• Microservices design patterns and AWS (any combination of EC2, ECS, RDS, S3, SQS, etc.)
• Daily hands-on use of AI tools and coding agents — this is a hard requirement, not a preference
• English: Upper-Intermediate or higher (B2+)
   

Conditions

• Full-time or part-time (3 days/week)
• Remote with occasional travel to team offsites

We are hiring on behalf of our client – an American media company with an office in Warsaw. They run email campaigns for 30+ clients across multiple verticals and need someone to own every interaction with ESPs. Getting accounts out of trouble, keeping them clean, and making sure no ticket goes cold – that is what this role exists to do.

The role

This is a writing-heavy operational role. You will own all communication with ESP support, compliance, abuse, and deliverability teams across the entire client portfolio. That means you are the one submitting tickets, handling responses to abuse complaints and compliance flags, and seeing every issue through to resolution.

You will not be delegating the writing. Every word sent to an ESP is yours, and every word affects the outcome. You need to know how ESP compliance teams think, what they want to hear, and when to push back versus when to concede. The two things that matter most here are resolution rate and speed.

What you will own

• Full ticket lifecycle across 30+ clients – open to closed, nothing lost
• All written communications to ESP support, compliance, and deliverability teams
• Responses to abuse complaints, account warnings, and suspensions
• Risk identification and escalation to the Head of Project before things blow up
• Translation of ESP requirements into internal action items
• Structured logs of all communications, statuses, and outcomes

Must-have

• 3+ years in ESP-side compliance, deliverability, or direct ESP communications
• Strong understanding of how ESP abuse and compliance teams evaluate sender behavior
• Exceptional written English – near-native or native (this is your primary tool)
• Proven ability to manage a large client portfolio simultaneously without losing detail
• High attention to detail – errors in ESP communication have real consequences
• Comfortable working across US time zones when needed
• Comfortable working across all niches without restrictions

Nice to have

• Direct experience working inside an ESP (support, compliance, or deliverability)
• Familiarity with how ESP internal escalation and decision-making works
• Background in email marketing or marketing operations

Compensation and benefits

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

About us
Oxigen is a new generation of headhunting, powered by AI. We work with fast-moving tech companies that need the right people — and we find them faster and smarter than traditional recruiting.

We're looking for a sharp, self-driven Freelance Recruiter to join our growing team. Your focus: finding great candidates and getting them into the pipeline. No fluff, no corporate nonsense — just real sourcing work with real impact.
 

What you'll do

• Source candidates across LinkedIn, GitHub, and niche tech communities
• Run targeted outreach campaigns that actually get responses
• Build and maintain talent pipelines for active roles
• Collaborate closely with founder to align on candidate quality and fit
• Keep candidate data clean and up to date in our ATS
   

What we're looking for

• At least 1 year of recruiting or sourcing experience
• Strong LinkedIn outreach skills — you know what makes people reply
• Comfortable working independently and managing your own time
• Curious about AI tools and open to using them in your workflow
• Good level of English — you'll be reaching out to international candidates
   

Nice to have

• Experience in tech recruiting (engineers, product, leadership)
• Familiarity with AI sourcing tools
   

Compensation Commission-only to start, with clear growth into a base + commission structure as we scale together. This is a real opportunity to grow with the company — not just a one-off gig.
 

Why Oxigen

• Fully remote, flexible hours
• Small team, big autonomy
• You'll actually learn and grow here
• Direct access to the founder

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

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're hiring on behalf of a fast-growing wellness and lifestyle brand that's building something much bigger than a supplement company.

The founders believe the product is only one part of the business. Their long-term vision is to create a community where ambitious entrepreneurs, founders, creators, and high performers come to learn, connect, and build meaningful relationships.
 

We're looking for the person who will help build that community from the ground up.

This isn't a moderation role.

This isn't a traditional social media job.

It's an opportunity to shape the culture of a community before it exists.
 

What You'll Do

• Build and grow an engaged community of entrepreneurs, founders, and ambitious professionals.
• Create conversations that people genuinely want to join.
• Develop recurring community rituals, discussions, challenges, AMAs, and events that keep members coming back.
• Become one of the recognizable voices of the brand across social media, community platforms, comments, and DMs.
• Turn followers into active community members and active members into advocates.
• Build relationships with creators, founders, and community members.
• Work closely with the founders to understand what the community needs and where it should evolve.
• Capture patterns, recurring questions, and insights from the community and turn them into recommendations for content, product, and marketing.
• Help shape the overall community strategy as the company grows.
• Publish content across social channels and actively participate in conversations around entrepreneurship, health, and performance.
   

What We're Looking For

We're looking for someone who naturally brings people together.

Someone who starts conversations instead of waiting for them.

Someone who creates momentum without being asked.

Ideally, you:

• Have experience building or growing communities, online or offline.
• Are genuinely interested in entrepreneurship, personal growth, health, and performance.
• Feel comfortable engaging with founders and business owners as a peer.
• Have excellent written and verbal communication skills.
• Know how to build trust and meaningful relationships online.
• Think in systems and can turn community feedback into actionable insights.
• Are proactive, independent, and comfortable working in a fast-moving startup.
• Are comfortable representing the brand publicly and appearing on camera when needed.
   

Nice to Have

• Experience building founder, creator, startup, or membership communities.
• Experience working with creator partnerships or ambassador programs.
• Experience in wellness, lifestyle, consumer brands, or startups.
• Experience running community events, masterminds, workshops, or online groups.
• Strong understanding of Instagram, TikTok, LinkedIn, X, Discord, Circle, Slack, or similar community platforms.
   

What We Offer

• Competitive compensation.
• Fully remote work.
• High ownership and autonomy.
• Direct collaboration with experienced founders.
• The opportunity to build a community from day one and have a visible impact on the company's growth.
   

If you enjoy creating spaces where ambitious people genuinely want to spend time – and you're excited by the idea of building something from scratch – we'd love to hear from you.

We are hiring on behalf of our client — an American media company with an office in Warsaw. They own and monetize a large newsletter portfolio across finance, health, and business verticals, sending to millions of subscribers in the US. SMS is their next major revenue channel, and nothing exists yet. This role builds it from scratch.
 

The role

This is a full ownership role for someone who has launched SMS programs at scale and knows how to turn a subscriber list into a revenue line. You will design the infrastructure, build the opt-in strategy, own the monetization, run the content operations, and hire a team as the channel grows.

You will not be inheriting an existing program. You will not be coordinating vendors. You will be the person who decides how this is done and executes it directly, with full access to leadership and real resources behind you.
 

What you will own

• SMS infrastructure: platform, vendor ecosystem, sending architecture, segmentation, and message routing
• Opt-in strategy and subscriber growth across newsletter properties, web, and email
• Deliverability, sender reputation, and performance metrics
• Full subscriber lifecycle from opt-in through churn
• SMS content calendar, copy standards, and editorial coordination
• SMS advertising product: rate card, inventory, targeting, advertiser reporting
• TCPA, GDPR, and carrier compliance end to end
• Team building as the channel scales
   

Must-have

• 5+ years in SMS marketing or mobile messaging, at least 2 at high-volume scale
• Proven track record launching an SMS program from scratch — not inheriting an existing channel
• Hands-on experience with a major SMS platform: Klaviyo, Attentive, Postscript, Twilio, or comparable
• Experience building and selling SMS advertising inventory: rate cards, targeting, advertiser reporting
• Deep compliance fluency: TCPA, GDPR, CTIA — lived and enforced, not listed
• Experience hiring and managing a small team
• Data-driven: tracks everything, reports clearly, decides from numbers
• C1+ English, written and verbal
   

Nice to have

• Background in newsletter, media, affiliate, or performance marketing
• Experience with workflow automation tools: Make, Zapier, or similar applied to messaging ops
• Familiarity with A/B testing applied to copy, send timing, and opt-in conversion
• Technical fluency with APIs, webhooks, or basic scripting for platform integrations
   

Compensation and benefits

• Competitive salary + bonuses
• 21 paid vacation days, 15 paid sick days
• Remote or hybrid, Warsaw office
• B2B contract, company covers taxes