ABOUT THE COMPANY Crossian is a technology-driven e-commerce business. Behind our success is our people. As a start-up formed in 2020, we have created a fast-paced and dynamic environment, enabling our people to reach a cumulative average growth rate of over 1000% in just under 3 years. At Crossian, you don’t just execute ad campaigns — you control the strategy. Powered by AI agents that automate data analysis and optimization, our UA Specialists directly scale our global DTC E-commerce portfolio with full ownership — zero middle management. If you are data-driven, cool under pressure, and ready to master global paid ads at scale, join us. WHAT YOU WILL DO - Plan and execute UA campaigns for a portfolio of 3-5 projects - Work with AI agents to produce and scale creative, guiding and refining their output to drive performance - Manage large-scale budgets on channels such as Applovin, ironSource, Unity Ads, Ad Networks, Meta, Google Ads... - Monitor daily performance and adjust bids, budgets, and targeting to improve CPA and scale winning campaigns - Collaborate with the Creative team to brainstorm ad ideas; execute A/B tests for videos/images to find high-performing hooks - Track and report campaign metrics daily; extract actionable insights from data to improve performance. - Keep an eye on competitors and industry trends to suggest new growth tactics [Requirements] WHAT WE ARE LOOKING FOR - A bachelor's degree in Marketing, Data Analysis, Economics, or a related field. - A strong academic foundation in mathematics is a real plus (Or a track record of achievements or awards in math during your school years). - 2-5+ years of hands-on experience in User Acquisition or Paid Ads (Games/Apps). Background at a Top-tier Tech/E-commerce or gaming company is a real plus - Advanced English proficiency (equivalent to IELTS 7.0+) - Experience in managing at least one major channel: Applovin, Unity, ironSource, Mintegral, Meta, or Google UAC. - Proficiency in Excel/Google Sheets to analyze data and make logic-based decisions. - Comfortable using AI tools in a creative and analytics workflow. Experience building or working closely with AI-driven marketing workflows or agents is a plus - A fast learner who adapts quickly as tools and platforms change. - Strong analytical skills and the ability to read performance data and translate it into creative decisions. - A growth mindset and performance-driven approach — always testing, learning, and iterating. WHY CROSSIAN IS THE NEXT BIG STEP FOR YOUR CAREER At Crossian, our people are the key to our success. We believe in creating an attractive total compensation package (TCP) that not only retains employees but allows them to excel in their profession. These include: - Total Compensation Package (Avg. 25 months/year) - Monthly Salary: Competitive and negotiable based on experience - Guaranteed Pay: 13th-month salary and 100% gross salary during probation. - Premium Global Health Insurance - Statutory contributions (SI, HI, UI) based on 100% of gross salary. - 5-day working per week (Monday to Friday) - 12 days of paid annual leave & 3 well-being off days - Training & Development Budget, including access to free Coursera courses. - A special scheme is offered to long-term employees (3-5 years of service) to extend this health package to your dependents/family - An annual 5-star events & Team Building Budget - Office Life: A well-stocked Pantry and a dedicated Crossian Café with free refreshments and goodies. Other benefits fully comply with the Company's Policy and Vietnam Labor Laws.