Senior Lifecycle & Retention Manager

Cosuno Ventures GmbH; Berlin; Hybrid; EUR 65,000 - 85,000; Full time

Benefits offered by this job

Remote or Berlin office

MacBook Pro

Competitive salary

Flexible hours

Regular off-sites

Growth & feedback culture

Job summary

Cosuno Ventures GmbH in Berlin is hiring a Senior Lifecycle & Retention Manager to build the growth engine that turns new users into paying, retained customers in a lean marketing team. You'll shape AI-native, signal-driven journeys, craft CRM programs across email, in-app, and marketplace communications, and collaborate with Product, Sales and Customer Success to drive measurable business impact.

This role offers remote work or Berlin office, with a competitive salary of €65K–€85K and ownership

Qualifications

• Proven experience owning CRM, lifecycle, retention or growth programmes with measurable business impact.
• Directly influenced conversion, activation or retention metrics with data and experimentation.
• AI-native approach: building AI-driven automation or agentic CRM systems.
• Ability to write and run SQL queries independently.
• Collaborates across Product, Sales, Customer Success and Engineering.
• Experience with ActiveCampaign and Salesforce is a plus.

Responsibilities

• Build CRM programmes and lifecycle journeys from tender discovery to paid conversion for subcontractors.
• Develop an agentic, signal-driven system for next-best-action triggers using behavioural data.
• Experiment with A/B tests and holdout groups to optimize incremental impact.
• Scale successful approaches into repeatable, integrated systemic processes.
• Coordinate journeys with Sales and Customer Success, balancing automation and human touch.
• Use CRM to improve marketplace liquidity and orchestrate multi-channel communications.
• Support growth programmes such as referrals from design to execution.

Skills

CRM lifecycle growth

AI-driven automation

SQL queries

Data-driven experimentation

Cross-functional collaboration

German & English fluent

Tools

ActiveCampaign

Salesforce

Job description

Your Mission

The company 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

The company – Revolutionizing construction through technology.

We are the company – 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.

Compensation

€65K – €85K