MSMarius Staicu
@mariusstaicu
Senior Java Solutions Architect / Developer / Freelancer
RomaniaWhat I'm looking for
I'm a seasoned Java Solutions Architect / Developer / Freelancer with 17+ years of experience, specializing in IoT, application modernization and scaling, cloud migration, and sustainable code development. With a strong background in Java, Spring, and cloud technologies, I excel in designing and building reliable solutions for international clients.
My expertise spans across IoT platform development, microservices architecture, and cloud migration. I'm passionate about delivering scalable and highly available solutions that meet the needs of my clients. With a proven track record of success, I'm committed to helping businesses achieve their goals through innovative technology solutions.
As a freelancer, I'm dedicated to delivering high-quality results and exceeding client expectations. I'm always looking for new opportunities to collaborate and drive innovation in the tech industry.
Experience
IE- Designed and built a cloud platform capable of accommodating 200k+ always-connected devices, enabling worldwide device control for hundreds of thousands of users by using event driven distributed microservices.
- Led a team of 5 developers.
- Achieved 99.995% service uptime by using highly available and scalable services in the cloud and employing a zero-downtime mentality for all operations.
SE- Improved security by up to 90% by implementing an extremely fast and low-memory footprint encryption algorithm for communication.
- Accelerated the development speed 3x for new products by creating a reusable device framework for common functions.
- Achieved an industry leading 0.05 ml dosing accuracy with cost effective DC motors.
RE- Decreased the number of bugs in releases by 80% by implementing automated tests.
- Increased the reliability by 95% by modernizing the codebase, containerization and making it horizontally scalable.
- Decreased 6x the time spent onboarding a new client by feature standardization, configuration and API integration with a single codebase.
WE- Led two teams of 14 developers that planned and performed the migration of the deployment platform from one cloud to another with zero downtime.
- Accelerated the feature delivery speed to production by 50%.
- Increased the customer base 3x by successfully launching the product in multiple countries.
PE- Created a rule engine that allowed the end user to define extremely dynamic pricing policies which could take into account competition prices, margins and price history.
- Improved initial price computation speed 5x by tuning the rule engine and database parameters so the system could compute the prices for 100k products in less than 10 seconds.
OE- Increased the addressability of the product 3x by integrating enterprise security standards in the product, including a never done before implementation of SOAP over JMS with Metro.
- Increased the number of authentication methods 3x by adding one-time password, certificate authentication as well as multi-factor authentication into the product.
Tech stack
Learn about the tools and technologies that Marius likes to use.
Availability
Location
RomaniaAuthorized to work in
Job categories
Skills
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