Senior Lifecycle & Retention Manager

Cosuno

1d • Hybrid

About The Position

Cosuno is a B2B marketplace connecting general contractors and subcontractors across the construction industry. As our Senior Lifecycle & Retention Manager, you'll build the growth engine that turns new users into active, paying and retained customers — and move us toward an AI-native, signal-driven system that decides what happens next on its own. You'll be one of the first to join the marketing lead in a lean marketing team: you'll shape how it operates as it scales, not just execute inside a fixed setup.

Requirements

• Owned CRM, lifecycle, retention or growth programmes and can show the commercial impact they created — ideally in B2B SaaS or a two-sided business model.
• Directly influenced conversion, activation or retention metrics and are confident with data and experimentation.
• Proven experience building AI-driven automation or agentic CRM systems, not just using AI to write copy faster.
• Write and run SQL queries independently.
• Go from data → insight → idea → implementation → result without needing someone else to define every step, and you like solving ambiguous problems and building from scratch.
• Work effectively across Product, Sales, Customer Success and Engineering, and care more about measurable business impact than campaign output.
• Fluent in written and spoken German and English.

Nice To Haves

• Hands-on experience with ActiveCampaign and Salesforce (or comparable CRM tools).

Responsibilities

• Build the CRM programmes and lifecycle journeys that drive adoption and conversion — from first tender discovery to paid conversion for subcontractors, and early product adoption to repeat tendering for construction companies.
• Build an agentic, signal-driven system that turns behavioural data, call insights and enrichment signals into personalised next-best-action triggers — replacing static journeys with ones that decide what happens next on their own.
• Experiment and measure with A/B tests and holdout groups, so decisions are based on incremental impact, not campaign output.
• Scale what works into a repeatable system, not one-off campaigns.
• Connect journeys with Sales and Customer Success, handing off to a human touch when that's more effective than automation.
• Use CRM as a lever for marketplace liquidity — getting the right subcontractors onto the right tenders — and orchestrate email, in-app, transactional comms and marketplace recommendations as one journey with Product.
• Support growth programmes such as referrals — from design through CRM execution.

Benefits

• Real ownership of lifecycle and CRM, with plenty of space to make an impact.
• Build with the latest tools and move fast, not wait for approval.
• Competitive compensation: Salary above market average, permanent contract in a stable, well-funded company.
• Fully remote or from our office in Berlin Kreuzberg, flexible hours.
• A new MacBook Pro.
• Open, international, with regular off-sites and team events.
• Open feedback culture with regular 1:1s and development conversations.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed