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About the Role
Cosuno is a B2B marketplace connecting general contractors and subcontractors. As Senior Lifecycle & Retention Manager, you will build the growth engine to convert new users into active, paying, and retained customers, moving towards an AI-native, signal-driven system. You will be one of the first marketing hires, shaping the team's operations as it scales.
Responsibilities
- Build CRM programs and lifecycle journeys to drive adoption and conversion for subcontractors and construction companies.
- Collaborate with the Marketing Lead to build an agentic, signal-driven system using behavioral data, call insights, and enrichment signals for personalized next-best-action triggers.
- Conduct A/B tests and holdout groups to ensure decisions are based on incremental impact.
- Scale successful initiatives into repeatable systems, moving beyond one-off campaigns.
- Integrate journeys with Sales and Customer Success for effective human-touch handoffs.
- Utilize CRM to enhance marketplace liquidity by connecting the right subcontractors with the right tenders.
- Orchestrate email, in-app, transactional communications, and marketplace recommendations with Product.
- Support growth programs such as referrals, from design through CRM execution.
Requirements
- Proven experience owning CRM, lifecycle, retention, or growth programs with demonstrable commercial impact, ideally in B2B SaaS or a two-sided business model.
- Direct influence on conversion, activation, or retention metrics.
- Confidence with data and experimentation.
- Proven experience building AI-driven automation or agentic CRM systems.
- Ability to write and run SQL queries independently.
- Capacity to independently drive projects from data analysis to implementation and results.
- Experience solving ambiguous problems and building from scratch.
- Effective collaboration across Product, Sales, Customer Success, and Engineering.
- Focus on measurable business impact over campaign output.
- Hands-on experience with ActiveCampaign and Salesforce (or comparable CRM tools) is a plus.
- Fluent in written and spoken German and English.
Skills
- CRM
- Lifecycle Marketing
- Retention Marketing
- Growth Marketing
- B2B SaaS
- Two-sided marketplaces
- Data Analysis
- Experimentation (A/B testing)
- AI-driven automation
- Agentic CRM systems
- SQL
- Product Marketing
- Salesforce
- ActiveCampaign
Location
- Berlin Kreuzberg
- Remote
Work Type
- Fully remote
- Hybrid
Experience Level
- Senior
Salary/Compensations
- Salary above market average
Benefits
- Opportunity to shape and grow the lifecycle and CRM function.
- AI-centric internal tools and processes.
- Competitive compensation with a permanent contract.
- Work-life balance with flexible hours.
- Fully remote or office-based work options.
- Top-notch equipment (new MacBook Pro).
- Great team environment with regular off-sites and team events.
- Open feedback culture with regular 1:1s and development conversations.
About the Company
- Cosuno is a fast-growing tech startup revolutionizing the construction industry with a digital platform for tenders and procurement processes.
- The company aims to solve complex industry challenges with innovation and simplicity.
- The product uses AI to analyze price data and improve bidding for construction companies.