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Yelizaveta Molchanova

Reliable Plus holder
Offer Yelizaveta work on your next project.

Ukraine Zaporizhzhia, Ukraine
currently online
A little busy a little busy
24 Safes completed
3 days 16 hours back
4 clients
3 proposals made
on the service 4 years
  • back-end
  • web developer
  • golang
  • Data mining
  • data collection
  • data engineering
  • Redis / PostgreSQL / MySQL
  • Docker / Docker compose
  • python
  • AI

Rating

Successful projects
100%
Average rating
10 out of 10
Rating
9277
AI & Machine Learning
4 place out of 2838
Data Parsing
43 place out of 769
Databases & SQL
19 place out of 1205
DevOps
11 place out of 196
18 projects
AI & Machine Learning
4 projects
Data Parsing
3 projects
Python
2 projects
DevOps

Language proficiency level

Українська Українська: fluent
Русский Русский: advanced
English English: upper-intermediate

Skills and abilities

Portfolio


  • 30 USD

    Maintenance

    Data Parsing
    Comprehensive support for existing data collection systems is offered to ensure uninterrupted operation and optimal performance throughout their entire lifecycle. Below is a detailed description of this service:
    - Monitoring and Analysis: Regular monitoring of system operations and analysis of its performance and stability are conducted by specialists. This includes checking event logs, monitoring system loads, and analyzing logs, among other tasks.
    - Updates and Patches: New releases for the components and tools used are tracked, and regular updates and patches are provided to maintain security and address any potential issues.
    - Performance Optimization: If necessary, optimization work is carried out to enhance system performance, such as tuning parameters, optimizing database queries, and implementing load balancing strategies.
    - Technical Support and Consultation: Experts are available to provide technical assistance and answer any questions related to system operation. Additionally, guidance is offered on optimizing and refining data collection processes.
    - Adaptation to Change: In response to evolving business requirements or changes in target resources, the existing data collection system is adjusted to align with new conditions and business needs.
    - Regular Reporting and Feedback: Regular reports on system operation, performance, and maintenance status are delivered. Furthermore, feedback is welcomed and support processes are adjusted accordingly to meet the specific needs of clients.

    #maintenance #report #statistics #support #analytics
  • 30 USD

    Data collection system

    Data Parsing
    - Development of a data collection system: Based on collected business requirements and an analysis of target resources, specialists initiate the development of a data collection system. This involves selecting appropriate technologies and tools, designing system architecture, and crafting necessary components and functionality.
    - Implementation of data transfer pipelines: Following the development of the data collection system, pipelines or processes for transferring received data to the client are established. This may entail integration with existing client systems or the creation of new data transfer methods such as APIs or file transfers.
    - Integration with existing systems (if required): In cases where an existing system is already in place, integration of the developed data collection system with the current infrastructure is undertaken. This ensures seamless operation and compatibility with the client's existing business processes.

    #back-end #bigdata #architecture #database #parsers
  • 20 USD

    Parsers Estimate

    Data Parsing
    This service provides a comprehensive approach to analyzing and selecting optimal technologies for implementing a parser (data collection system) tailored to a specific task and target resource. Here is a detailed description:
    - Target Resource Exploration: A thorough study of the target web resource slated for parsing is conducted. This encompasses analyzing site structure, available data, formats for information presentation, and access methods.
    - Implementation Plan Development: Based on the gathered information, an implementation plan is crafted. This plan determines the appropriate parser and integration method with the target resource. It involves selecting technologies, tools, and scraping methods best suited for the given context.
    - Implementation Cost Estimation: Using the implementation plan, the expected cost of the parsing project is assessed. This estimation includes evaluating the time and resources required for parser development, testing, and implementation.
    - Full Parsing Cycle: Upon the customer's decision, specialists commence the parsing project implementation. This process encompasses parser creation, configuration, optimization, as well as performance testing and data quality assessment.

    #bigdata #Databases #datacollection

Reviews and compliments on completed projects 24

31 May 330 USD
Scope of Tasks (Initial Infrastructure Phase)

Quality
Professionalism
Cost
Contactability
Deadlines

Very satisfied with the collaboration. Elizaveta not only completed tasks but also genuinely helped to build the architecture and workflow logic.

I especially liked the ownership approach, code quality, calm communication, and the ability to make technical decisions independently without overengineering.

The work was done very professionally, structured, and with a good understanding of the long-term development direction. We plan to continue the collaboration in the future.

22 May 165 USD
API + website integration для tangential map.

Quality
Professionalism
Cost
Contactability
Deadlines

Very good technical result and communication throughout the entire project. The tangential map implementation turned out to be very interesting and became an important step for the further keratoconus validation platform. Thank you for your work.

21 May 275 USD
Tangential Map v1.

Quality
Professionalism
Cost
Contactability
Deadlines

Very good experience of collaboration. Strong technical work, good communication, and attention to detail. I particularly liked the structure of the code, the documentation, and the readiness for research-oriented tasks.

16 May 220 USD
Keratoconus — stabilization batch #

Quality
Professionalism
Cost
Contactability
Deadlines

Professional and responsible work. She understood the pipeline and detection/QC logic well, conducted stabilization carefully without regressions on good cases. Communication was quick and comfortable, all stages were completed within the agreed deadlines. Thank you for the work.

2 May 110 USD
Task for API integration into website

Quality
Professionalism
Cost
Contactability
Deadlines

Elizaveta quickly understood the task, worked in a structured and precise manner. All corrections were made clearly and without unnecessary questions, communication was easy and pleasant.

I would especially note the responsibility and attention to detail; all changes were made thoughtfully, without "breaking" decisions.

1 May 170 USD
Logging для clinical validation.

Quality
Professionalism
Cost
Contactability
Deadlines

Elizaveta quickly understood the complex architecture of the project, proposed the right technical solutions, and successfully implemented the API, regression testing, and logging. It is especially valuable that she thinks systematically, pays attention to stability and reproducibility of results, rather than just "making it work." Communication was easy, all tasks were completed on time and with attention to detail.

29 April 170 USD
Regression / stability check.

Quality
Professionalism
Cost
Contactability
Deadlines

Excellent work. The contractor carefully brought the stage to a stable state: the API pipeline was implemented, the aggregation logic was corrected, and regression was added to check stability. The code is structured, and revisions from the review were made quickly and accurately. Communication is at a high level, and deadlines were met. We plan to continue the collaboration.

25 April 330 USD
Minimal Scope: Stage 1 API Integration

Quality
Professionalism
Cost
Contactability
Deadlines

The work was done quality and on time. Quick communication, all corrections made correctly. I recommend for collaboration.

9 April 220 USD
Phase 7 Website Demo Integration

Quality
Professionalism
Cost
Contactability
Deadlines

Laid down by the result.
The project included the integration of an ML pipeline, API, and web UI with deployment on Railway. As a result, we obtained a fully functional end-to-end demo (upload → analysis → result).
The performer demonstrated a good level: independently found and fixed problems, correctly set up deployment, integration, and API. Communication was clear and to the point.
Ready to continue collaboration in the next stages.

7 April 220 USD
Phase 6

Quality
Professionalism
Cost
Contactability
Deadlines

Very satisfied with the collaboration. All tasks completed according to the requirements, the result is suitable for further integration. I recommend for collaboration.

7 April 200 USD
Phase 5 Batch Validation & Reliability

Quality
Professionalism
Cost
Contactability
Deadlines

Very satisfied with the collaboration. The work was done at a high level: the pipeline became stable, deterministic, and well-structured. I especially appreciate the attention to detail, quality analysis of edge cases, and a systematic approach to the task. All stages were completed on time, communication was quick and clear. I recommend as a strong and responsible specialist.

4 April 250 USD
Phase 4 Metrics & Output Standardization

Quality
Professionalism
Cost
Contactability
Deadlines

Thank you for the collaboration, very high-quality and professional work. The pipeline has become stable, well-structured, and suitable for further integration. I especially appreciate the attention to detail, independent problem analysis, and careful implementation. I recommend for collaboration.

3 April 250 USD
Phase 3 Detection & QC Hardening

Quality
Professionalism
Cost
Contactability
Deadlines

Thank you, very good result. The pipeline has become stable, the errors are clean and understandable. I suggest closing Phase 3 and moving on to the next stage.

1 April 200 USD
Placido Pipeline Iris Detection Root Cause Analysis

Quality
Professionalism
Cost
Contactability
Deadlines

Thank you for the completed work — this is a strong result. You approached the task correctly: you found the root cause of the problem (IRIS_NOT_FOUND), carefully corrected the configuration without changing the logic, stabilized the pipeline and brought it to a working state, added a clear structure for results and logging. It is especially valuable that you did not try to "work around" the problem through parameters, but rather understood the cause. Now the pipeline is already providing valid results, and this is a good basis for the next stages.

31 March 330 USD
Placido / corneal analysis

Quality
Professionalism
Cost
Contactability
Deadlines

Thank you for your work, this is a very strong result.
We especially appreciate:
the stabilization of the pipeline (it now runs reliably on batch data)
proper error handling and isolation of failures
clearer output structure and status handling
added tests and detailed technical analysis
Your analysis of the system limitations is particularly valuable, it helps us clearly understand the current state of the pipeline and the next steps.

29 March 165 USD
Test

Quality
Professionalism
Cost
Contactability
Deadlines

Thank you for the completed work. I liked the structured approach, the modularity of the solution, and the attention to preprocessing and quality control. Good engineering thinking and a systematic view of the task are evident. Overall, the approach is interesting and professional.

Quality
Professionalism
Cost
Contactability
Deadlines

The project has been successfully completed, we continue the collaboration!

4 December 2024 165 USD
Automate ADSPower

Quality
Professionalism
Cost
Contactability
Deadlines

Very cool performer. Did everything quickly and efficiently! Not only follows the specifications but also adds a lot of expertise and value!

21 November 2024 255 USD
Refinement of the model for text analysis.

Quality
Professionalism
Cost
Contactability
Deadlines

I am very pleased with the collaboration, thank you!

2 November 2024 440 USD
Model for text filtering.

Quality
Professionalism
Cost
Contactability
Deadlines

Great performer, we have worked together before, everything is done excellently.

26 October 2024 90 USD
Analysis of data and making corrections in the parser

Quality
Professionalism
Cost
Contactability
Deadlines

Excellent project execution, responsible performance, and speed.

8 October 2024 220 USD
Setting up and launching the parser

Quality
Professionalism
Cost
Contactability
Deadlines

I am very pleased with the collaboration, I would highlight the speed and involvement in the project, and I hope for further cooperation.

23 September 2024 35 USD
Make changes to the parser

Quality
Professionalism
Cost
Contactability
Deadlines

Everything was done excellently and very promptly, I am completely satisfied with the collaboration with Elizabeth. I especially want to highlight her approach to problem-solving – she always offers effective solutions and carefully works through each stage of the work.

23 September 2024 300 USD
Implement a parser for a travel aggregator

Quality
Professionalism
Cost
Contactability
Deadlines

Elizaveta is an excellent performer, I especially want to note the work process and how Elizaveta constantly kept me informed about the progress.

Activity

  Projects underway 1
Backend completion / integration stabilization scope перед реальним data collection. Personal project
135 USD

  Latest proposals 10
Backend completion / integration stabilization scope перед реальним data collection. Personal project
135 USD
Scope of Tasks (Initial Infrastructure Phase) Personal project
330 USD
API + website integration для tangential map. Personal project
165 USD
Tangential Map v1. Personal project
275 USD
Keratoconus — stabilization batch # Personal project
220 USD
Freelance project
Task for API integration into website Personal project
110 USD
Logging для clinical validation. Personal project
170 USD
Regression / stability check. Personal project
170 USD
Minimal Scope: Stage 1 API Integration Personal project
330 USD