Yogesh Kumar
Senior Backend Developer | Python, Django, TDD
Salary / Daily rate
Berlin, Germany
Freelance
Can come onsite
Skills
Languages
About me
Intro
Backend engineer with 8+ years building scalable Python/Django systems at Kraken and leading teams. Reduced technical debt by 80%, cut bugs by 50% through TDD, and automated 70% of testing processes. Specialized in clean APIs, AWS infrastructure, and mentoring teams to deliver high-performance solutions.
Work experience
Software Engineer ll
Kraken
Nov 2024 - Present
2 years
Berlin, Germany · Hybrid
Senior Python Developer
EmergnFreelance
Jun 2024 - Dec 2024
7 months
Berlin, Germany · Remote
* Designed and implemented advanced data analytics tools using Python and its libraries (NumPy, Pandas) to support various business needs and reduce manual data doing by over 70%. * Develop scripts and automated workflows to streamline data processing, analysis, and reporting tasks. * Collect, clean, and preprocess large datasets from multiple sources, ensuring data quality and integrity for accurate analysis.
Mika
Oct 2021 - Jul 2024
2 years 10 months
Berlin, Germany
Lead Backend Developer
Nov 2022 - Jul 2024
1 year 9 months
Berlin, Germany
* Reduced technical debt by 80% through the development and enforcement of coding standards and best practices, ensuring clean and efficient codebases. * Conducted architectural reviews and design discussions, collaborating with stakeholders to deliver solutions aligned with business goals. * Mentored junior developers on design patterns and architectural principles, fostering continuous learning and improvement. * Implemented robust API designs and documented over 70% of APIs, ensuring seamless service integration and reducing onboarding time. * Led the adoption of test-driven development (TDD) using Pytest, enhancing code reliability and decreasing bugs by 50%. * Collaborated with stakeholders to define project requirements, scope, and timelines, ensuring timely delivery of key features. * Utilized AWS SNS for pub/sub messaging to send notifications and alerts, optimizing communication across services. * Configured S3 buckets with appropriate access controls and policies, ensuring data security and regulatory compliance.
Senior Backend Engineer
Oct 2021 - Dec 2022
1 year 3 months
Berlin, Germany
Working as a Backend Engineer handling tasks related to Django Rest Framework. Supporting iOS and Android application. Working in collaboration with Data Science team to help cancer patients to see better content of Articles, Journeys etc.
Senior Python Developer
Emerson
Apr 2021 - Oct 2021
7 months
Chandigarh, India
* Spearheaded development and maintenance of mission-critical software applications, improving operational efficiency by 30%. * Designed and implemented full-stack solutions, optimizing both front-end performance and back-end scalability. * Delivered innovative software projects, driving digital transformation initiatives within the company. * Collaborated with cross-functional teams to align technical solutions with business objectives, ensuring project success.
Senior Software Development Engineer
TestingXperts
Oct 2019 - May 2021
1 year 8 months
Chandigarh, India
* Specialized in validating data flow across APIs, Data Management Applications, and ETL processes at Consumer Reports Union, USA. * Developed automated test scripts using Python, Pytest, and Pandas, ensuring seamless functionality of critical data pipelines. * Conducted thorough code reviews, enforcing best practices and maintaining high code quality standards. * Collaborated closely with the Data Engineering team to understand requirements and design effective automation solutions for API and ETL testing. * Improved testing efficiency by automating 70% of manual test cases, reducing errors and improving data pipeline reliability.
German Language Scholar
IFS Bonn, Germany
May 2019 - Oct 2019
6 months
53 Bonn, Germany
•Attended intensive German language courses at IFS Bonn, Germany. •Focused on mastering fundamental German grammar, vocabulary, and conversational skills. •Successfully passed the B1 level certification in German, demonstrating proficiency in reading, writing, and speaking. •The B1 certification from IFS Bonn signifies intermediate proficiency in the German language. •Gained confidence to handle daily conversations, work, and social interactions in German-speaking environments.
Python Developer
Net Solutions
Jan 2017 - Mar 2019
2 years 3 months
Chandigarh · On-site
* Collaborated with the Business Analysis team to gather and implement project specifications, ensuring alignment with business goals and user needs. * Developed server-side applications using Python, Django, and integrated technologies like OAuth, Google Firebase, Postgres SQL, and Redis. * Built and maintained RESTful APIs to enable seamless communication across application components. * Wrote comprehensive unit tests, improving product reliability and ensuring functionality with 95% test coverage. * Utilized front-end technologies like HTML, CSS, JavaScript, jQuery, and Ajax to enhance user interfaces and experiences. * Focused on maintaining high code quality standards and proactively solving technical challenges to drive project success.
Software Design and Developer
CodeQuotient
Jun 2016 - Dec 2016
7 months
Sahibzada Ajit Singh Nagar, Punjab, India
Skills: Python · C · C++ · Data Structures · Databases · JavaScript · MySQL · SQL
Education
UIET - Kurukshetra University
Engineer’s Degree
2012 - 2016
4 years 1 month
Licenses & certifications
Problem Solving (Intermediate)
Issued: May 2025
Software Engineer
Issued: May 2024
FastAPI - The Complete Course 2024 (Beginner + Advanced)
Issued: Apr 2024
Python Microservices: Breaking a Monolith to Microservices
Issued: Feb 2024
Problem Solving
Issued: May 2023
Introduction to Data Science
Issued: Nov 2020
Rest API (Intermediate)
Issued: Jul 2020
Python Machine Learning and Data Science Boot Camp
Issued: Apr 2020
Python(Basics)
Issued: Mar 2020
German B1
Issued: Aug 2019
German A2
Issued: May 2019
German A1
Issued: Feb 2019