Deividas Ambrazevicius

(Industry-leading password manager by Nord Security, driving innovation in web technology, performance, and automation.)

• Designed and built a fraud detection service which integrates LLM methods, preventing invalid signups and saved €100,000 annually.
• Measured and improved team velocity, task complexity progression, and story point efficiency, ensuring data-driven team growth.
• Ensured staging and review environments, set the rules when we use both of these environments
• Enabled continuous automated testing, reducing manual QA time by 40% and improving release reliability.
• Empowered non-technical teams to build and edit content independently with headless CMS, cutting content update/create time by 90% (from 3 days to 30 minutes) also successfully migrated 1,600+ landing pages from Gatsby to NextJS
• Developed a Grafana dashboard for B2C payment analytics, providing real-time tracking of initial and recurring payment success rates, enabling the marketing team to monitor transaction performance and optimize strategies.
• Built a unified Web API integrating multiple services with centralized error handling, single API endpoint for all services (replacing multiple scattered APIs)
• Implemented growth-focused development roadmaps for engineers, ensuring structured skill progression and technical excellence.
• Introduced automated monitoring for outdated/vulnerable packages with proactive fixes and workload tracking, optimizing task distribution and balancing complexity across the team.
• Enforced detailed briefs before sprint acceptance, reducing estimation errors by 50%.

• Oversaw the entire IT infrastructure, cybersecurity, and software maintenance, ensuring seamless operations across the company.
• Led infrastructure changes and supplier renegotiations, reducing annual IT expenses by €20,000, while maintaining high system performance and security.
• Negotiated and optimized contracts with third-party service providers, reducing costs by 15% while improving service quality.
• Ensured IT solutions were fully aligned with business needs, enhancing productivity and supporting company-wide digital transformation initiatives.

(Fastest-growing digital health companies in Europe, with 6.5M+ customers worldwide, ranked 2nd fastest-growing company by Financial Times FT 1,000 in 2022.)

• Technical Lead for DoFasting (We were in App Store #1 in Health & Fitness category) – Led the end-to-end technical delivery of one of Kilo Health’s most successful projects, overseeing website development, payments infrastructure, and app releases.
• Designed and implemented multiple APIs and microservices, supporting millions of users and ensuring seamless cross-platform integrations.(Exercises, meal plans)
• Optimized infrastructure and CI/CD pipelines, reducing website deployment time by 80% and enabling one-day landing page launches for new products.
• Managed a high-performing team of 2 back-end developers, 2 front-end developers, 2 mobile developers, and 2 QA engineers, ensuring top-tier execution and delivery.
• Led the development of a new service generating an additional €2,000/month in revenue, contributing to company growth.
• Contributed to the company's expansion from 30 to 500+ experts, 30+ products, and 5 European offices, driving innovation in the digital health space.

• Engineered a scalable and reusable back-end architecture, reducing development time by 80%, allowing new product landing pages to be built and launched within one day.
• Implemented auto-scaling and proactive monitoring, reducing downtime by 40% and improving server efficiency by 30%.
• Designed a secure and modular payment system which included different payment providers(braintree,paypal, klarna, paypal), integrated into multiple projects, increasing transaction success rates by 25% and reducing payment processing issues by 35%.
• Led initiatives that improved load times by 50%, reduced server costs by 20%, and ensured 99.9% uptime across all web applications.

• Developed enhancements that improved page speed by 70%, leading to a 40% increase in contact form submissions and higher organic traffic.
• Implemented Amazon S3 and CloudFront CDN solutions, reducing server costs by 20% while improving asset delivery speed.
• Built tailored internal tools that streamlined workflows, saving clients 15% annually and improving efficiency.
• Provided expert guidance on web architecture, performance tuning, and scalable solutions for agencies and businesses.

• Developed user-friendly interfaces using HTML, CSS, JavaScript, and other front-end technologies for seamless user experience for the clients
• Made responsive web applications to provide consistent user experiences across multiple devices and platforms.
• Built custom functionalities for WordPress platforms which improved work efficiency in clients daily work.
• Introduces website maintenance agreements for the client which added additional 40 000 GBP pe year for the agency profit.

• Improved Database performance by 30% to support back-end services
• Integrated third-party APIs to enhance functionality and improve overall user experience on e-commerce platform.
• Reduced page load times 40% by optimizing front-end assets such as JavaScript chunk sizes and preloaded images