Mikhail Klimchuk

Defined and launched a portfolio product (consumer mobile app, marketing landing pages, CRM) and drove the MVP from value proposition to release - ready backlog and UX for key journeys within 8 months.

Reduced MVP scope by 20% by cutting non - core features, avoiding ~ € 60,000 in development costs.

Established a cross - functional team of 12, achieving ~80% on - time delivery for major releases and improving stakeholder visibility of product status.

Introduced a unified backlog, regular grooming and sprint planning, halving requirement and design approval time from 4 to 2 weeks.

Designed a basic acquisition funnel (install → sign - up → booking/purchase) with 45% install - to - sign - up and 20% sign - up - to - first - booking conversion in target - audience tests.

Reworked the integration architecture and justified dropping an expensive third - party system, cutting projected annual operating expenses by ~15%.

Coordinated release preparation with development, QA, design, legal, and marketing teams, including store listings, screenshots, release notes, versioning, and production checklists.

Planned and managed staged rollouts, phased releases, hotfixes, and rollback procedures; monitored store feedback, crashes, and performance indicators to ensure stable launches.

Launched a new mobile app for a retail sub - brand in 6 months, reaching 60,000+ installs in the first post - launch quarter.

Grew the product to 20,000–25,000 MAU with D30 retention of 26% during year one.

Increased the mobile app share of e - commerce revenue to 60–70% in the first year.

Lowered outsourced development team costs by 23% over 6 months while keeping delivery quality stable.

Increased monthly GMV through the app from € 9,630,000 to € 11,330,000 (~20% growth) within one year.

Managed end-to-end mobile app publishing across the App Store and Google Play, from developer-account setup and access management to release submission and post-launch monitoring.

Ensured app, metadata, privacy disclosures, payments, and technical configurations complied with Apple and Google platform requirements, reducing review risks and release delays.

Built an experimentation backlog based on funnel analysis, user research, and business priorities, focusing delivery on the highest-impact growth opportunities.

Turned a loss - making subscription app profitable in 4 months by redesigning unit economics, introducing new pricing tiers, executing a full product redesign and sharpening the core value proposition.

Boosted LTV by 40% via tiered subscriptions and focused churn - reduction initiatives for paying users.

Raised the App Store rating from 3.2 to 4.4 by improving support workflows and user communication.

Designed and ran A/B tests across key user journeys, validating product hypotheses and improving conversion by 20%.

Defined test methodology, target segments, success metrics, and statistical criteria - translated results into clear product decisions and roadmap priorities.

Scaled winning experiments into production features, contributing to measurable improvements in retention, engagement and revenue.