Senior Lifecycle & Retention Manager

Cosuno Ventures GmbH; United States; Hybrid; USD 97,000 - 125,000; Full time

Benefits offered by this job

Remote-friendly

Berlin Kreuzberg office

MacBook Pro

Open, international team

Growth opportunities

Job summary

Cosuno is seeking a Senior Lifecycle & Retention Manager. You will build the growth engine to turn new users into paying, retained customers, and move us toward AI-native signal-driven decisions that automate next steps.

You will shape how marketing operates at scale, align with Product, Sales and Customer Success, and drive measurable business impact through data-driven experimentation and cross-team collaboration.

Qualifications

• CRM, lifecycle, retention or growth programs with measurable impact.
• Experience driving conversion, activation or retention metrics.
• Proven AI-driven automation experience, not just copywriting.
• Ability to write and run SQL queries independently.
• Strong cross-functional collaboration across Product, Sales, CS and Engineering.
• Experience with ActiveCampaign and Salesforce is a plus.

Responsibilities

• Build the CRM programmes and lifecycle journeys from tender discovery to paid conversion.
• Develop a signal-driven system turning data into personalised next-best-action triggers.
• Experiment and measure with A/B tests and holdout groups for incremental impact.
• Scale proven approaches into repeatable systems, not one-off campaigns.
• Coordinate journeys with Sales and Customer Success, handing off when automation isn’t optimal.
• Orchestrate email, in-app, transactional comms and marketplace recommendations with Product.
• Support growth programmes such as referrals through CRM execution.

Skills

CRM lifecycle

AI automation

SQL

Cross-functional

German/English

ActiveCampaign

Salesforce

Tools

ActiveCampaign

Salesforce

Job description

Your Mission

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.

What you’ll do

• You 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.

• Together with the Marketing Lead, you 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.

• You experiment and measure with A/B tests and holdout groups, so decisions are based on incremental impact, not campaign output.

• You scale what works into a repeatable system, not one-off campaigns.

• You connect journeys with Sales and Customer Success, handing off to a human touch when that’s more effective than automation.

• You 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.

• You support growth programmes such as referrals — from design through CRM execution.

What You Bring

• You’ve 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.

• You’ve directly influenced conversion, activation or retention metrics and are confident with data and experimentation.

• You’re genuinely AI-native: proven experience building AI-driven automation or agentic CRM systems, not just using AI to write copy faster.

• You write and run SQL queries independently.

• You 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.

• You work effectively across Product, Sales, Customer Success and Engineering, and care more about measurable business impact than campaign output.

• A plus: hands-on experience with ActiveCampaign and Salesforce (or comparable CRM tools).

• Fluent in written and spoken German and English.

Your Benefits

• Room to shape and grow: One of the first marketing hires — real ownership of lifecycle and CRM, with plenty of space to make an impact.

• AI at the core: Our product uses AI to analyze millions of price data points and help construction companies bid better — and we invest in it just as much internally. You’ll 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.

• Work-life balance: Fully remote or from our office in Berlin Kreuzberg, flexible hours.

• Top-notch equipment: A new MacBook Pro.

• A great team: Open, international, with regular off-sites and team events.

• Growth & feedback: Open feedback culture with regular 1:1s and development conversations.

About us

Cosuno – Revolutionizing construction through technology.

We are Cosuno – a fast-growing tech startup that is making the construction industry more efficient and transparent with our digital platform for tenders and procurement processes. Our goal: to solve the most complex challenges in the industry with innovation and simplicity.

Join us – Build the future of construction.