B2Tech

אור יהודה, ישראל

פרילנסר

צור קשר

אודותינו

• Senior Backend/Full Stack Developer with 15+ years designing, building, and maintaining scalable, high‑traffic distributed applications.
• Proficient in .NET Core, C#, Python, ASP.NET, Microservices, SOA, Docker, Kubernetes, AWS, and Azure.
• Skilled in Agile/Scrum, TDD, SDLC principles, and various design patterns, resulting in robust, maintainable code.
• Experienced with CI/CD pipelines, DevOps practices, and automation using Azure DevOps, GitHub Actions, and Jenkins.
• Data expertise includes MS SQL, PostgreSQL, MongoDB, Redis, and proficiency in T‑SQL and stored procedures.
• Proven track record of refactoring legacy systems, reverse engineering projects, and modernizing applications with contemporary technologies.
• Build Apache Airflow pipelines on Astronomer Cloud (AWS) to orchestrate data transfers and transformations across S3, RDS/PostgreSQL, MongoDB, and external 3PL/eCommerce APIs; implement SLAs, retries/backfills, and data quality checks.
• Manage Airflow deployments and monitoring via Astronomer and AWS (alerts, logs, metrics); parameterize DAGs, template environments, and integrate secrets with AWS Secrets Manager.
• Excellent communication skills in English, with the ability to collaborate across geographical boundaries.
• Team Player: enjoys collaborating with global, cross‑functional teams in a dynamic, fast‑paced environment.

שפות

רוסית

שפת אם

עברית

שליטה קרובה לשפת אם

אנגלית

שליטה טובה

תחומי התמחות

טכנולוגיה

290 ₪ לשעה

Amazon EC2 - Elastic Compute Cloud

תכנון ופריסה, ניטור ועלויות, Auto‑Scaling ו־Hardening.

Amazon S3 - Simple Storage Service

אינטגרציות Data/ETL (Airflow/Astronomer), Lifecycle Policies, אבטחה ו־Pre‑Signed URLs.

Amazon RDS - Relational Database Service

RDS ל־PostgreSQL/MS SQL: פריסה, ניטור, גיבויים, כוונון פרמטרים ו־IAM/Secrets.

IIS

פריסת אתרי ASP.NET, הקשחות, Rewrite/Compression, Troubleshooting בייצור.

WCF

שירותי אינטגרציה בסגנון SOA, הקשחות ו־Throttling, מיגרציות ל־REST.

MVC

ASP.NET MVC 4/5, ארכיטקטורת שכבות, מעבר הדרגתי ל־Web API/SPA.

JSON

חוזי API יציבים, ולידציה/סכמות, ניהול גרסאות ותאימות לאחור.

Elastic Search

Elasticsearch/Kibana ללוגים ומדדים, שאילתות/אגרגציות, אופטימיזציה ותחזוקת קלאסטר.

Docker

Multi‑stage builds, Security Scanning, Compose/Kubernetes, CI/CD (Azure DevOps/Jenkins/GitHub Actions).

Jira

ניהול פרויקטים Agile, Workflows/Boards, דוחות ודאשבורדים.

Amazon Web Services (AWS)

EC2/S3/RDS/SQS, IAM/Secrets Manager, ניטור (Datadog/Elastic/Grafana), Astronomer Cloud ו־Airflow ב־AWS.

תכנות ופיתוח תוכנה

300 ₪ לשעה

.NET, C#, Dot Net, VB

C#/.NET 4.5–8 בפרודקשן בקנה מידה גדול; VB.NET — לא מרכזי.

ASP

התמחות ב־ASP.NET (Web API/MVC). Classic ASP — תחזוקה/מיגרציה נקודתית.

ASP.NET

.NET Core 3.1–8, Web API, Identity Server, EF Core, Microservices, Observability, CI/CD, Docker/K8s.

HTML5, CSS3, JavaScript

פיתוח UI עם Angular/React (בסיס), נגישות וביצועים.

מתכנת, פיתוח תוכנה כללי

15+ שנות ניסיון מקצה לקצה: ארכיטקטורה, פיתוח, TDD, DevOps ו־Automation.

DB - MySQL

היכרות תפעולית; עיקר הניסיון ב־MSSQL/PostgreSQL.

DB - PostgreSQL

תכנון סכמות ואינדקסים, EF Core, אופטימיזציה, עבודה ב־AWS RDS, גיבויים ורפליקציה.

DB - MSSQL, SQL Server

T‑SQL, Stored Procedures/Views, ניתוח Execution Plans, טיוב ביצועים בסביבות ייצור.

DB - MongoDB

סכמות דוקומנטריות, Aggregation Pipeline, אינדוקס וביצועים תחת עומס גבוה.

XAML

פיתוח ממשקי WPF/UWP/MAUI עם MVVM, Data Binding מתקדם, Styles/Templates, משאבים דינמיים ואופטימיזציית ביצועים. בניית רכיבי UI מותאמים ושילוב מלא עם .NET Core/ASP.NET APIs.

AngularJS

תחזוקה ושדרוג מערכות קיימות, תכנון מיגרציה ל־Angular מודרני.

DB - NoSQL

תכנון סכמות דוקומנטריות, דנורמליזציה חכמה, אינדוקס ואופטימיזציה לשאילתות במערכות בעלות נפח גבוה ו־low latency. ניסיון עם Redis לקאשינג ו־DynamoDB/MongoDB לעומסים גבוהים. MongoDB, Redis, RavenDB בפרודקשן; מודל דוקומנטים, Aggregation, אינדקסים, רפליקציה ושילוב ב־Microservices.

API, REST, SOAP

RESTful APIs עם OpenAPI, OAuth2/JWT, Rate Limiting/Idempotency; SOAP/WCF — תחזוקה ומיגרציות ל־REST.

מפתחי Back-end

Microservices, Event‑Driven, RabbitMQ/Kafka/SQS, אבטחה ו־Observability (Grafana/Elastic/Datadog), .NET Aspire Telemetry.

נסיון תעסוקתי

אוגוסט 2023 - היום

Senior Backend Engineer Core-Platform Team

B2Tech , Or Yehuda, Tel Aviv District, Israel

• Develop and maintain a high‑load Sports Book Platform (Backoffice, Payments, CRM) utilizing .NET 8, C#, and Python.
• Build Apache Airflow pipelines on Astronomer Cloud (AWS) to orchestrate data transfers and transformations across S3, RDS/PostgreSQL, MongoDB, and external 3PL/eCommerce APIs; implement SLAs, retries/backfills, and data quality checks.
• Manage Airflow deployments and monitoring via Astronomer and AWS (alerts, logs, metrics); parameterize DAGs, template environments, and integrate secrets with AWS Secrets Manager.
• Implement CI/CD pipelines using Azure DevOps; automated tests, security checks, container build/publish, and deploy.
• Design and optimize MS SQL databases, including stored procedures, views, T‑SQL queries; add caching with Redis.
• Experience with monitoring/logging tools such as Grafana, Elastic, Datadog, LogsIO.
• Deploy telemetry (.NET Aspire) to write and monitor logs, traces, and metrics.
• Ability to deploy and maintain monitoring systems for services.
• Experience with multi‑site or distributed network environments.
• Collaborate with cross‑functional teams to ensure network security, high performance, and system reliability.

אפריל 2021 - אוגוסט 2023

Senior FullStack Developer / TechLead C# .NET CORE

Aman Group

Developed an application server side using .Net Core 8.0, Asp.Net Core WEB API, TPL, Entity Framework, PostgreSQL.
Microservices using Docker, Web API, .Net Framework 4.7.2, EF Core 7.0, Dot Net Core 8.0, AWS, Azure.
Unit Tests and Integration Tests using VS2022, MOQ Mocking Framework, xUnit.net.
Continue Integration (CI/CD) on Kubernetes, Docker, Azure DevOps, Azure TFS.
Designed and managed PostgreSQL, Redis, SQL, Stored Procedures, Views, CRUD commands.
Development audit and logging infrastructure using C#, Log4net, Elastic Search, Kibana, MSMQ, AWS SQS.
Development of “Authentication and Authorization” of users using Identity Server and JWT token, OAuth 2.0.
Developed and Application client side using React, Angular 17, TypeScript, HTML5, CSS3

ינואר 2019 - מרץ 2021

Senior Full Stack Developer C# .NET CORE

User1st , Tel Aviv District, Israel

Developed an application server side using .Net Core 3.1, Asp.Net Core WEB API, TPL, Entity framework 6.4, PostgreSQL.
Development of Microservices Systems using Web API running on Docker, AWS, AZURE.
Developed and Application client side using React, Angular, TypeScript, HTML5, CSS3.
Unit Tests and Integration Tests using VS2019 Unit Testing Framework & MOQ Mocking Framework With xUnit.net.
Continue Integration (CI/CD) on Kubernetes with Source Control on Azure TFS, AWS SAAS.
Development audit and logging infrastructure using C#, Log4net, RabbitMQ, MSMQ, AWS SQS.
Designed and managed PostgreSQL GUI Client and SQL Management Tools, Stored Procedures, CRUD commands.
Development of “Authentication and Authorization” of users using Identity Server and JWT token, OAuth 2.0

פברואר 2017 - ינואר 2019

Full Stack Developer .NET

ManpowerGroup , Tel Aviv District, Israel

Developed an application using .NET 4.6, Asp.NET, MVC4, WEB API, Angular
Designed and develop integration platform (SOA based) using .Net 4.6 (WCF Services, TPL),
Entity framework 6, MS SQL 2014, Oracle DB, MongoDB.
Designed and develop unit and integration tests using Visual Studio Unit Testing Framework.
Designed and managed MS SQL 2014 DB for projects, including T-SQL: SP, Triggers, Functions and Views.
Development audit and logging infrastructure using C#, Log4net, Elastic Search, Kibana, RabbitMQ, MSMQ, AWS SQS.
Integration with Amazon CloudFront, AWS S3, AWS EC2, Azure SaaS.
Integration and configuration DataPower to response for difference types of Applications.

ינואר 2014 - דצמבר 2017

Full Stack Developer .NET

Radware , Tel Aviv Area, Israel

Designed and developed Web Application https://portals.radware.com (client and server side) using
.NET 4.5 (Asp.Net, Rest API, MVC 5), HTML5, CSS 3, Bootstrap, JavaScript, AngularJS, Kentico CMS.
Designed and develop integration platform (SOA based) using .Net 4.5 (WCF Services, TPL), Entity framework 6,
MS SQL 2012/2014, Oracle DB, Oracle Sales Cloud.
Designed and develop unit and integration tests using Visual Studio Unit Testing Framework.
Designed and managed MS SQL 2012 DB for projects, including T-SQL: SP, Triggers, Functions and Views.
Integration with Amazon CloudFront, Amazon CloudFront, AWS EC2, Azure TFS, AWS SQS

פברואר 2010 - ינואר 2014

Full Stack Developer .NET

Beatman , Tel Aviv District, Israel

Designed and developed Web Application (Jobniks, Meba, Join Me - client and server side) using ASP.NET 4.0, ASP.NET MVC 3, WEB
API, HTML 4/5, CSS 2/3, JavaScript, jQuery and jQuery UI latest version
Designed and developed Android Application (2net, Jobniks - client and server side) using Java, Asp.Net WEB API.
Designed and developed Android Application with Unity3D.
Designed and developed Facebook Application (Insight Pages, Afikoman) using ASP.NET 4.0, FQL.
Designed and developed WCF services for internal and external applications.
Designed and managed MS SQL 2005/2008/2012 DB for projects, including T-SQL: SP, Triggers, Functions and Views.
Designed and managed Raven DB (NoSQL) databases for projects.
Design and development last application "90 seconds" using MVC 3, Amazon services AWS, Raven DB (NoSQL)

קורסים, הסמכות, לימודי תעודה

אוקטובר 2009

Dot Net

Camtek College Tel-Aviv

Microsoft Certified Professional Developer, Professional Web DeveloperProfessional Web Developer - 2009 - 2011 years.
MCPD on Microsoft Visual Studio 2010
Introduction to Programming, HTML, DHTML, CSS, JavaScript — 30 hours
Programming with C# — 50
Web Applications Development with Microsoft .NET Framework 4 — 50
Accessing Data with Microsoft .NET Framework 4 — 60
Designing and Developing Web Applications Using Microsoft .NET Framework 4 — 60
Windows Communication Foundation Development with Microsoft .NET Framework 4 — 20
Windows Applications Development with Microsoft .NET Framework 4 — 25
Designing and Developing Windows Applications Using Microsoft .NET Framework 4 — 25
Implementing a Microsoft SQL Server 2008 Database — 50
Writing Queries Using Microsoft SQL Server 2008 Transact‑SQL — 30
Total: 400 hours