Sergiu Danalachi
Verified Expert in Engineering
Software Developer
Brașov, Brașov County, Romania
Toptal member since November 3, 2020
Sergiu is a technology-agnostic software developer who learned over the years to streamline all aspects of the software development lifecycle: challenging the requirements, architecting and implementing scalable and maintainable code, and owning the code to production. He has a continuous strive for knowledge, likes to experiment with new technologies, and implement PoCs (e.g., Native FS API, WebRTC, Web Workers, Pytorch). He also likes to contribute to open-source projects.
Portfolio
Experience
- MySQL - 6 years
- Node.js - 6 years
- Git - 6 years
- MongoDB - 5 years
- AngularJS - 4 years
- Java - 4 years
- Vue - 2 years
- Spring Boot - 1 year
Availability
Preferred Environment
Figma, Linux, Windows, Git, JetBrains
The most amazing...
...thing I've built is healthcare software for controlling the actuators of a hospital bed and visualizing a virtual copy of the bed.
Work Experience
Software Engineer
Security and Safety Things GmbH
- Implemented user and company end-to-end registration flow (signing-up, company screening, and approving commercial).
- Drove UI consistency across the ecosystem by introducing sharable and scalable web components.
- Worked on, and improved, identity and permission management (OAuth 2.0 + OpenID connect).
- Created μService to integrate external company screening services.
- Improved continuous integrations and continuous deployment pipelines.
Software Developer
Smart-Trial ApS
- Contributed to the core product, an end-to-end solution for clinical trials: questionnaires, medicine tracking, events tracking, etc.
- Improved existing code using SOLID design principles.
- Improved code quality using: TDD and unit/component//integration/E2E tests.
- Improved security by always integrating security fixes and actively trying to break the development system with well-known attacks.
Student Research Assistant
University College Nordjylland
- Created a scalable data generator for smart metering.
- Clustered and found patterns in existing data sets using data science methods (e.g. k-means, auto-regression).
- Validated the solution by running and assessing experiments.
- Contributed to the results into two papers which were presented at two conferences.
Intern Software Developer
MEDEI ApS
- Created, deployed, and maintained the company's marketing website.
- Improved SEO of the marketing website for better conversion rates.
- Contributed to Android applications for outsourcing projects.
Experience
Live Short-Term Load Forecast for Smart Meters Data
In addition, a web application for visualization of the ingested data as well as the short-term forecasted energy.
The target customers are the energy utility companies that want to store the smart metering data and to optimize the amount of power to generate as excess power is expensive to store. Knowledge of future demand allows for the releasing of stored energy in anticipation of peaks in demand and thus reducing costs.
Education
Master's Degree in Computer Science
Aalborg University - Aalborg
Bachelor's Degree in Software Development
University College Nordjylland - Aalborg
Certifications
Improving Deep Neural Networks: Hyperparameter tuning, Regularization and Optimization
Coursera
Neural Networks and Deep Learning
Coursera
Skills
Libraries/APIs
Node.js, Vue, Mustache, Web3.js
Tools
JetBrains, Git, Figma, LaTeX
Languages
Java, JavaScript, TypeScript, SCSS, HTML, CSS, HTML5, Python, C#, Scala, GraphQL, PHP, Solidity
Frameworks
Vuetify, Nuxt.js, Jest, AngularJS, Spring Boot, OAuth 2, Express.js, Spark, Angular
Paradigms
REST, Testing, Microservices, Microservices Architecture, DevOps
Storage
JSON, Databases, MongoDB, MySQL, MemSQL
Platforms
Amazon Web Services (AWS), Windows, Linux, Azure, Kubernetes, Android, Apache Kafka
Other
Front-end, APIs, Back-end, Startups, Artificial Intelligence (AI), Minimum Viable Product (MVP), Early-stage Startups, Verification, Large-scale Distributed Systems, System Integration, Semantics, Design by Contract (DbC), Google SEO, Machine Learning, Deep Learning, Neural Networks, Hyperparameters, Regularization, Apollo, Apollo Server, Languages, Compilers, Programming
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