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Bijaya – Python, Typescript, PostgreSQL, experts in Lemon.io

Bijaya

From Poland (GMT+2)

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Full-stack Web DeveloperSenior
Hire developer
8 years of commercial experience
AI
Cloud computing
Computer science
Data analytics
Fintech
Govtech
Logistics
Machine learning
Pharmaceutics
Productivity
Project management
Scientific research
Telecommunications
Tourism
Travel
AI software
Compilers
Dev tools
Mobile apps
NLP software
No-code software
Lemon.io stats
3
projects done
590
hours worked
Open
to new offers

Bijaya – Python, Typescript, PostgreSQL

If you're looking for a developer who can bring the Python & Django magic, slay the database dragons, make React dance, and test all that like a pro, look no further! Bijaya is a Senior Full-stack developer with a strong foundation in Python, Django, FastAPI + Javascript, Typescript, and React. He is fluent in databases, particularly PostgreSQL, and can whip up incredible data-driven applications. When it comes to quality, Bijaya is all about unit testing, using tools like Pytest and Jest to ensure rock-solid code.

Main technologies
Python
5 years
Typescript
5 years
PostgreSQL
5 years
FastAPI
3.5 years
Vector Databases
1 year
React
5 years
Django
5 years
LLM
1 year
Prompt engineering
1 year
LangChain
1 year
Pandas
1 year
NumPy
1 year
Additional skills
AWS
Node.js
Django REST
React Native
Vue.js
Rust
Redis
ElasticSearch
Amazon EC2
Amazon SNS
Amazon S3
Kubernetes
Amazon RDS
Docker
Aiohttp
Microservices
asyncio
OpenAPI
Sentry
React Hooks
Docker Compose
Sentry
Material UI
JWT
SQLAlchemy
Stripe API
AWS SageMaker
BigQuery
Vertex AI
Google Analytics
OpenAI
Pinecone
AI
Context API
OpenAI API
REST API
DigitalOcean
WebSocket
GPT
Next.js
OAuth
Auth0
Data Structures
Vercel
Algorithms and Data Structures
Apache Airflow
PyTorch
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Tech Lead
Jan 2024 - Mar 20241 month
Project Overview

Created a sophisticated hotel booking assistant harnessing the power of Large Language Models (LLM). Applied vector embeddings to enhance data representation and retrieval efficiency. Implemented the Retrieval Augmented Generation (RAG) framework alongside LLM architecture to optimize conversational interactions and offer personalized recommendations to users.

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Responsibilities:
  • Created LLM agent assistant;
  • Implemented RAG architecture;
  • Built a pipeline for vector embeddings;
  • Utilized scalable vector database;
  • Advanced vector search.
Project Tech stack:
LLM
LangChain
Vercel
Next.js
React
OpenAI
OpenAI API
AWS
React Hooks
WebSocket
API
Prompt engineering
Tailwind CSS
Vector Databases
PostgreSQL
Google API and Services
Senior Full-stack Engineer
Jul 2023 - Oct 20233 months
Project Overview

Helping national banks, airlines, telcos, pharmaceutical companies, government, and the public sector deploy custom and commercial apps remote to 1000s of staff around the globe.

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Responsibilities:
  • Led the successful development of the latest iteration of ReFRMD, demonstrating adept leadership in overseeing the project from inception to completion.
  • Innovated an abstract syntax tree-like syntax tailored for describing ReFRMD-specific form UI elements. This breakthrough allowed for the seamless integration of complex validation logic, including dependencies on dynamically specified UI elements.
  • Engineered a cutting-edge solution enabling the dynamic construction of forms coupled with robust validation mechanisms and type safety throughout the development process.
Project Tech stack:
Typescript
Next.js
Python
FastAPI
PostgreSQL
Vercel
REST API
Auth0
OAuth
Algorithms and Data Structures
Data Structures
Lead Full-stack Engineer
Jan 2023 - Aug 20236 months
Project Overview

Your journaling companion.

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Responsibilities:
  • Led the development of the MVP for a cutting-edge conversational AI, taking charge of cloud, backend, and frontend stacks.
  • Pioneered the integration of LLM with other AI models, resulting in an AI that excels in natural language processing across text, audio, and speech interactions.
  • Engineered a sophisticated AI capable of storing and analyzing personality traits, memories, goals, and preferences, enriching the conversational experience for users.
Project Tech stack:
Python
LangChain
Pinecone
OpenAI
OpenAI API
AI
FastAPI
PostgreSQL
DigitalOcean
React
Typescript
React Hooks
Vite
WebSocket
REST API
Context API
GPT
Pandas
NumPy
PyTorch
Full-stack Web Developer
Mar 2022 - Mar 20231 year
Project Overview

No-code IDE for Quantum Computing. It builds a bridge between the end-users and quantum computing with visual, easy-to-use software development tools. It has been widely adopted in many quantum computing subjects, including prestigious institutions like Oxford University and Stanford University. The platform received global recognition and was nominated for The Webby Awards 2023 in the science category, further highlighting its impact and success.

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Responsibilities:
  • Created a modern web application for quantum computing hardware overriding and customizing almost every default browser behavior, such as scroll, context menu, etc.;
  • Added new features on top of the existing simulation engine in Rust WASM, which allowed a great deal of flexibility to the users;
  • Developed complex mathematical functions including Blackman waveform, kaiser waveform, and Piecewise Cubic Hermite Interpolating Polynomial from scratch;
  • Integrated functions into the UI and the simulation with SVG and numeric arrays, enabling real-time parameter changes without performance issues;
  • Detected and fixed major UI/UX issues and hard-to-find bugs and ported the web app to run smoothly on smaller screen devices which improved the number of users and the number of quantum experiments growth in the platform by 30%.
Project Tech stack:
Typescript
Vue.js
Vite
Rust
Full-stack Web Developer
Jul 2021 - Oct 20221 year 3 months
Project Overview

It is a comprehensive logistics solution. As the solo developer, he acted as the Tech lead, gathering requirements and building both the back end using Python and the front end using React.

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Responsibilities:
  • Created front-end and back-end architecture;
  • Successfully developed the project;
  • Acted as the Tech lead, overseeing the entire development process;
  • Conducted requirement-gathering sessions with the product owner to align project objectives;
  • Covered code with tests.
Project Tech stack:
Python
Django
Django REST
Docker
Docker Compose
React
React Hooks
Material UI
OpenAPI
Sentry
Amazon EC2
Amazon RDS
Amazon S3
Sentry
Apache Airflow
NumPy
Pandas
Full-stack Web Developer
Mar 2022 - Jul 20224 months
Project Overview

Provided by PASQAL, one of Europe's leading quantum computing companies, it is a platform to make neutral-atoms programming accessible to everyone with zero code. The zero-code platform also provides an auto-generated code output in Python continuously as the quantum device, pulses, and atoms are added, updated, and removed.

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Responsibilities:
  • Created a modern web application for quantum computing hardware overriding and customizing almost every default browser behavior such as scroll, context menu, etc.;
  • Added new features on top of the existing simulation engine in Rust WASM, which allowed a great deal of flexibility to the users;
  • Developed complex mathematical functions including Blackman waveform, kaiser waveform, and Piecewise Cubic Hermite Interpolating Polynomial from scratch ;
  • Integrated all functions into the UI and the simulation with SVG and numeric arrays, enabling real-time parameter changes without performance issues.
Project Tech stack:
Typescript
Vue.js
Rust
Vite
Python
Senior Full-stack Web Developer
Oct 2019 - Apr 20211 year 5 months
Project Overview

It is a workforce management software suite that monitors employees' work device activity, such as keyboard and mouse movements, currently using applications, and takes screenshots. An admin dashboard was provided that showed all the activities and productivity scores for each employee.

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Responsibilities:
  • Implemented a scalable and resilient back-end service in Python using FastAPI and Postgresql for the workforce management software suite, using microservice design principles, Docker containerization, and Kubernetes orchestration;
  • Developed a desktop client application using Python, Pyside2, and Qt5 for a workforce management software suite with a focus on functional programming. Successfully ensured cross-platform compatibility on Darwin, windows, and Linux and integrated log syncing with Graylog service;
  • Utilized Time series analysis techniques with TimescaleDB to analyze and visualize large datasets with the high temporal resolution, enabling accurate forecasting and trend identification. Leveraged advanced SQL queries and Python libraries such as Panda and NumPy to extract insights and communicate findings to stakeholders.
Project Tech stack:
Python
FastAPI
PostgreSQL
React
Docker
Kubernetes
AWS
Amazon SNS
Redis
ElasticSearch
Amazon EC2
Amazon RDS
Amazon S3
SQLAlchemy
OpenAPI
JWT
Apache Airflow
NumPy
Pandas
Full-stack Web Developer
Dec 2016 - Aug 20192 years 7 months
Project Overview

It is a traveling and trekking planning app

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Responsibilities:
  • Developed a service-oriented monolithic backend, adhering to Domain-Driven Design principles, utilizing Python, AIOHTTP, and Postgresql to ensure efficient performance and scalability, which was deployed in AWS;
  • Implemented Elasticsearch search functionality for efficient and accurate search results retrieval;
  • Utilized PostGIS extension to efficiently perform GIS analysis and modeling efficiently, enabling accurate geospatial data management and processing.
Project Tech stack:
Python
Aiohttp
PostgreSQL
Microservices
Docker
React
Node.js
Typescript
asyncio
AWS
Amazon EC2
Amazon SNS
Amazon S3
Amazon RDS
ElasticSearch
Apache Airflow
NumPy
Pandas

Education

2021
Mathematics
Bachelor's

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