CLAUDIU HARTON
Senior React Fullstack Engineer • Contractor • Freelancer
ABOUT ME
I am a senior React Fullstack Engineer / Developer / Consultant / Contractor / Freelancer
with 8+ years experience, only interested in remote work.
I use my passion, skills and experience to design and implement state of the art software
solutions for business customers worldwide.
Drop me a message if you think my expertise could help your organisation.
MOS T R ELE VANT W O R K EXP ER IENC E
CONTACT
Senior React Fullstack Engineer
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INNIO Group
-
Apr 2023 - Present
The client, a notable energy solution provider with its digital platform being connected to
over 10,000 engines in about 100 countries is facing large costs due to maintaining the
quality of the engines.
Bucharest, Romania
claudiu.harton
in/claudiuharton
SKILLS
Increased user satisfaction by 70% by migrating the customer-facing app to
Material UI, including improvements on user journeys and various design changes.
Increased support team productivity by at least 10% by having easier access to
relevant information within the app.
Decreased costs of maintaining the quality for the customers by 3% by new
features added within the customer-facing interface app.
ReactJS
6 years
VueJS
7 years
JS/ES6
8 years
Redux
5 years
Vuex
5 years
Mocha/Chai
4 years
Metro.digital
NodeJS
7 years
ExpressJS
7 years
Java SE/EE
7 years
The client, an IT solution provider for well-known cash&carry stores across Europe and Asia,
was dealing with highly inefficient management of the voucher systems across the countries due to operating outdated employee-facing applications for managing the vouchers.
Springboot
5 years
Microservices
5 years
Hibernate
6 years
Sequelize
7 years
SQL
8 years
GCP
3 years
CI/CD
5 years
GIT
8 years
EDUCATION
Skills: GraphQL, ReactJS, TypeScript, MochaJS, Cypress, Java, Hibernate, Spring Boot,
Microservices, Web Services, PostgreSQL, CI/CD
Senior React Fullstack Engineer
Ensured integration for extra 3 countries in 6 months due to the flexibility of
adjusting the voucher layout and better handling of internal data.
Decreased page loading time from 2-3 seconds to 0.5 seconds by optimising the
data pooling inside the application and changing the technology of the visual
interface.
Decreased release time from 1-2 hours with possible downtimes to 15 minutes
with no downtime by changing the deployment environment to a well-known cloud
provider.
Skills: ReactJS, Redux, MochaJS, Cypress, JavaScript, Java, Spring Boot, Microservices,
Postgres, Google Cloud Platform
Senior VueJS Fullstack Engineer
University of Economic Studies
MSc in E-Business
Bucharest,-
University of Economic Studies
BSc in Computer Science
Bucharest,-
Dec 2021 - Apr 2023
NN Group
Jan 2022 - Dec 2022
The client, a well-known provider of retirement services, pensions, insurance, banking and
investments to approximately 18 million customers, is facing a set of governmental directives consisting in better services for end-customers which needed to be integrated within
their customer-facing application in the next few years.
Increased user satisfaction by 30% by implementing a new user experience design
system including 2 funnels pages.
Increased total usage of the application by nearly 50% by integrating with other
pension providers within the Netherlands.
Reduced technical depth by 70% by removing or changing non-migratable components.
Skills: VueJS, Composition API, Vuex, JavaScript, TypeScript, Cypress, Mocha, NodeJS,
ExpressJS, Sequelize, Amazon Web Services
Senior VueJS Fullstack Engineer
Shopping Cart
Apr 2020 - Sep 2020
The client, a small town local business owner of a fashion in Romania was losing customers
due to pandemics restrictions and required an online solution in order to continue sustaining its business in the new environment.
Increased customer retention to more than 50% by using the application in the
first stages.
Decreased losses by 70% by exposing the products of the client by finding new
creative ways of showing their products within the app.
Incresead previous customer satisfaction by 5X by using app features to check and
purchase products compare to only onsite option.
Skills: VueJS, Vuex, QuasarJS, JavaScript, Progressive Web App, NodeJS, ExpressJS,
Sequelize, Postgres, Mailgun, Heroku
Senior Java Fullstack Engineer
Metro Systems
Sep 2018 - Dec 2020
The client, an IT solution provider for well-known cash&carry stores across Europe and Asia,
was dealing with highly inefficient management of the voucher systems across the countries due to operating outdated employee-facing applications for managing the vouchers.
Increased performance by over 1000% for certain service requests and Reduced
processing time from several hours to an average of 10-15 minutes by redesigning
the accessor methods within ORM.
Increased marketing team productivity by at least 50% by having the documents
processed significantly faster due to the new design of the process.
Skills: Java, JPA, JSF, IBM WebShpere Application Server, Hibernate, Spring, Spring Boot,
Microservices, Oracle
Senior VueJS Fullstack Engineer
S.L.E.E.P.
Sep 2019 - Feb 2020
Project in the education domain for university students in the highest university from
Romania according to „Times Higher Education World University Ranking” regarding a
common problem of lack of attendance and involvement in university classes potentially
benefiting more than 23k students per year.
Increased user attendance to classes to 50% for the sample students group
compared to solutions prior used by using our application.
Increased involvement in class due papers of students by 30% by having the
tasks listed in their dashboard compared to prior solutions like instant messages.
Increased interaction between students and they're in charge classmates by
over 25% by using in-app features.
Skills: VueJS, Vuex, JavaScript, ElementUI, NodeJS, ExpressJS, Sequelize, Postgres, Heroku
NodeJS Fullstack Engineer
Cybernetics Student Union
Jan 2018 - Jun 2018
The client, an active organisation with more than 200 individuals leading projects with
students and top business owners in Bucharest needed help with keeping the records for a
recruitment process.
Increased by 40% of registered users and increased the user experience of
intern and external users by 5X by using having the features listed in one single app
built from scratch instead of previous solutions.
Reduced time and human resources needed for sustaining the process by over
70% by having the data stored in one place and using a single interface made from
scratch instead of multiple apps as a service for different tasks.
Skills: JavaScript, Bootstrap, HTML, CSS, NodeJS, ExpressJS, Sequelize, MailGun, MySQL,
Digital Ocean
