Hire Vetted Data and Analytics Engineers at Upstaff - Page 3

All vetted software engineers you need to build AI, Web3, and data Products.
  • Dedicated Full-time commitment for long-term or Time& Material for shorter or ongoing support
  • Europe, Israel, LatAm, United States, Asia geography coverage
  • Remote and hybrid engagement
  • Trial period, no termination fees or hidden costs for transparent and risk-free onboarding.
Python 3yr.
JavaScript 3yr.
TypeScript 3yr.
React 3yr.
Ext JS 1yr.
...
  • Full-Stack Developer with 3 years of experience specializing in Blockchain, AI, and Healthcare AI domains, delivering scalable, secure, and modular web and mobile applications.
  • Proficient in Python, JavaScript/TypeScript, React, Next.js, FastAPI, Django, PostgreSQL, Docker, and cloud infrastructure (GCP), with strong expertise in asynchronous programming and software architecture design.
  • Implemented AI-driven solutions including Retrieval-Augmented Generation pipelines, vector database semantic search, and real-time chatbots integrating LangChain and OpenAI technologies.

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Middle
Bulgaria
Python 3yr.
PyTorch 2yr.
FastAPI 2yr.
JavaScript 1yr.
TypeScript 1yr.
...
  • AI/ML Engineer with 3 years of experience delivering production-ready machine learning systems, including real-time generative AI avatars and multi-agent orchestration frameworks.
  • Proficient in Python, PyTorch, FastAPI, and LLM ecosystems (OpenAI, LLaMA, LangChain), with strong expertise in deploying scalable AI solutions using Docker and AWS cloud services.
  • Skilled in full ML lifecycle: data engineering, model training, deployment, monitoring, and optimization, demonstrated by building an AI-driven ad bid price optimization model and modular workflow systems.

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WordPress
Python
PHP
JavaScript
MySQL
...
  • Full-stack engineer with 7+ years in PHP/WordPress and 5+ years in JavaScript/TypeScript;
  • Built data platforms using Python, SQL, ETL pipelines (Airflow, PySpark), and AWS;
  • Developed custom WordPress plugins, REST APIs, and data-driven features (tables, reports, analytics);
  • Skilled SQL and database design (PostgreSQL/MySQL), including query optimization;
  • Experience integrating AI/LLM features into data products and analytics workflows.

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Senior
Poltava, Ukraine
Python 8yr.
Scikit-learn 6yr.
PyTorch 4yr.
TensorFlow 4yr.
Hugging Face 3yr.
...

AI & Machine Learning Engineer with 8+ years designing and deploying production ML systems in NLP, recommendation engines, forecasting, anomaly detection, and computer vision.

Expertise in Python, PyTorch, TensorFlow, scikit-learn, Hugging Face, FastAPI, Docker, Kubernetes, AWS, and MLOps tools like MLflow and Airflow.

Proven track record building scalable AI platforms, including retrieval-augmented knowledge assistants and real-time fraud detection frameworks.

Strong foundation in computer science with a B.Sc. degree, skilled in end-to-end ML pipelines from data ingestion to model monitoring and API deployment.

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Spring 6yr.
Django 6yr.
...

Innovative Senior Software and AI Engineer with 13+ years of experience across backend, frontend, mobile development, and system design. Skilled in Python, Node.js, PHP, C#, Java, cloud-native architectures, and modern frameworks including React, Next.js, Angular, React Native, and native Android. Experienced in building scalable applications, developer tools, and intelligent automation that improve SDLC efficiency. Strong background in CI/CD, OOP, performance optimization, and testing frameworks for high-impact engineering teams.

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Senior
United States
Python
Node.js
C/C++/C#
Java
PHP
...

Innovative Senior Software and AI Engineer with 13+ years of experience across backend, frontend, mobile development, and system design. Skilled in Python, Node.js, PHP, C#, Java, cloud-native architectures, and modern frameworks including React, Next.js, Angular, React Native, and native Android. Experienced in building scalable applications, developer tools, and intelligent automation that improve SDLC efficiency. Strong background in CI/CD, OOP, performance optimization, and testing frameworks for high-impact engineering teams.

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Senior
Alexandria, United States
JavaScript 8yr.
TypeScript 6yr.
Node.js 6yr.
React 5yr.
Ext JS 3yr.
...
  • Full Stack Developer with 8+ years of experience specializing in JavaScript/TypeScript, React, Next.js, Angular, Node.js (Express, NestJS), and cloud platforms AWS & Azure.
  • Proficient in designing scalable architectures, REST & real-time APIs (Socket.IO), and working with RDBMS (PostgreSQL, MySQL) and NoSQL (MongoDB).
  • Strong background in Computer Science (Master’s degree) with expertise in OOP, design patterns, UML, and SDLC including Agile and TDD methodologies.

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Python 3yr.
FastAPI 3yr.
OpenAI 3yr.
LangChain 3yr.
PostgreSQL 3yr.
...
  • Over 15 years of expertise in data architecture, ETL pipelines, and AI/ML-driven analytics, with a PhD in Mathematics emphasizing analytical rigor.
  • Proficient in Python, SQL/PLSQL, Java, Golang, and modern frameworks like FastAPI, LangChain, and LangGraph, delivering scalable AI and data engineering solutions.
  • Led cloud-native microservices and event-driven architectures using Docker, NATS, and CI/CD pipelines across AWS, GCP, and IBM Cloud
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Architect/Team-lead
Cyprus
JavaScript 5yr.
TypeScript 5yr.
Node.js 5yr.
NestJS 5yr.
Angular 5yr.
...
  • Full Stack Developer with 5+ years of experience in designing and scaling AI-driven and cloud-native web applications using Node.js, NestJS, Angular, and TypeScript.
  • Expertise in system architecture design, RESTful API integration, and optimizing performance across SQL/NoSQL databases including PostgreSQL, MySQL, MongoDB, and Redis.

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Python 1yr.
SQL 1yr.
Power BI 1yr.
Scala
R
...
  • Data Analyst with extensive experience in Big Data technologies, specializing in Microsoft Fabric, Python, SQL, PowerBI, Scala, and R.
  • Proven track record in designing and implementing Data Warehouses and Lakehouse architectures (Medallion pattern) with efficient ETL/ELT pipelines using Data Factory and DBeaver.
  • Skilled in developing predictive algorithms, machine learning pipelines, and APIs for data-driven applications, enhancing decision-making processes.
  • Over 7 years of professional experience managing complex projects in data analytics and construction, demonstrating strong technical and project management capabilities.
  • Certified in Programming 101, Microsoft Fabric, BIM Archicad, and PRESTO, with advanced proficiency in data visualization tools like Power BI and Tableau.
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Python 1yr.
SQL 1yr.
Power BI 1yr.
Scala
R
...
  • Data Analyst with extensive experience in Big Data technologies, specializing in Microsoft Fabric, Python, SQL, PowerBI, Scala, and R.
  • Proven track record in designing and implementing Data Warehouses and Lakehouse architectures (Medallion pattern) with efficient ETL/ELT pipelines using Data Factory and DBeaver.
  • Skilled in developing predictive algorithms, machine learning pipelines, and APIs for data-driven applications, enhancing decision-making processes.
  • Over 7 years of professional experience managing complex projects in data analytics and construction, demonstrating strong technical and project management capabilities.
  • Certified in Programming 101, Microsoft Fabric, BIM Archicad, and PRESTO, with advanced proficiency in data visualization tools like Power BI and Tableau.
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Java 10yr.
Spring Boot 5yr.
RESTful API 5yr.
microservices 3yr.
AWS 3yr.
...
  • Senior Java Backend Engineer with 10+ years of experience delivering high-throughput, production-grade systems in healthcare and fintech domains.
  • Expertise in Java (8 to 22), Spring Boot (2.7 to 3.5), microservices, Hexagonal and Clean Architecture, and SOLID principles ensuring scalable and maintainable codebases.
  • Proven track record in architecting backend services, optimizing PostgreSQL performance, and integrating AWS cloud services including S3 and ECS.
  • Hands-on experience with real-time big data pipelines processing 20+ TB/day using Kafka, Spark, Hadoop, and Cassandra.
  • Strong foundation in computer science with M.Sc. degree and extensive knowledge of RESTful API design, CI/CD pipelines, and test-driven development using JUnit, Mockito, and Jacoco.
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Python 7yr.
Django REST framework 2yr.
Flask 2yr.
FastAPI
Celery
...
  • Senior Backend & AI Engineer with 7+ years designing scalable, low-latency distributed systems and GenAI platforms in YC-backed and enterprise environments.
  • Expert in Python, FastAPI, Django/DRF, and event-driven microservices, specializing in resilient, self-scaling cloud-native backends using AWS, GCP, and Kubernetes.
  • Proficient in Agentic RAG pipelines, LangChain, LLM inference (Ollama/VLLM), vector databases, and real-time data pipelines for fintech and AI-driven applications.
  • Led teams and architected high-throughput data systems ensuring 99.9% uptime during transaction spikes and optimized database performance with PostgreSQL, MongoDB, and advanced ORM techniques.
  • Holds MCA and PGDCA degrees with a strong foundation in computer science, delivering end-to-end solutions across SDLC, CI/CD, Terraform, and security audits for global clients.
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PHP 4yr.
MySQL 4yr.
Redis 4yr.
Laravel 2yr.
...
  • Software engineer with 4+ years of experience specializing in backend development using PHP, Laravel, Phalcon, and Symfony, delivering optimized web applications and scalable APIs.
  • Proficient in database design and management with MySQL, Redis, and Elasticsearch, alongside expertise in queue processing and performance optimization.
  • Skilled in cloud infrastructure and DevOps tools including Docker, AWS (EC2, S3, CloudWatch), Azure, Nginx, Linux, and CI/CD pipelines to ensure robust deployment workflows.
  • Strong foundation in computer science with a Bachelor's degree, covering algorithms, data structures, design patterns, OOP, SOLID principles, and multiple programming paradigms.
  • Experience mentoring developers and integrating complex APIs, with additional knowledge in C++, JavaScript, and machine learning concepts, contributing to diverse project success.
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Python 10yr.
PyTorch 6yr.
TensorFlow 6yr.
Kubernetes 4yr.
LangChain 1yr.
...
  • Senior Machine Learning Engineer with 10+ years architecting scalable AI systems, specializing in deep learning, LLM orchestration, and MLOps across AWS, Azure, and Databricks.
  • Expertise in Python, C++, Java, Rust, and Go, with advanced skills in PyTorch, TensorFlow, LangChain, Kubernetes, and distributed computing frameworks.
  • Proven track record delivering enterprise-grade AI products including multi-agent LangGraph pipelines, real-time voice tutoring platforms, and decentralized ML infrastructure.
  • Strong background in computer vision, NLP, and autonomous systems, with hands-on experience in YOLO, OpenCV, CUDA, and GPU optimization.
  • Master’s degree in Computer Science, skilled in CI/CD, containerization, microservices, and compliance-driven software development for high-impact AI applications.
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Architect/Team-lead
United States
Python 6yr.
Django REST framework 2yr.
Flask 2yr.
JavaScript
FastAPI
...
  • Senior Backend Engineer with 7+ years of expertise in designing and deploying scalable, secure backend systems and AI-powered platforms using Python, Django, Flask, and FastAPI.
  • Proficient in integrating databases (MySQL, PostgreSQL, MongoDB) with ORM tools like Django ORM and SQLAlchemy, and experienced in cloud-native architectures across AWS, Azure, and GCP.
  • Hands-on experience in AI/ML, LLM inference, Agentic RAG pipelines, and productionizing intelligent systems for real-time, high-traffic consumer applications.
  • Strong engineering background with a Master’s in Computer Application and top academic performance, complemented by leadership roles mentoring development teams and managing end-to-end project delivery.
  • Skilled in distributed systems, API development, automation, cybersecurity best practices, and modern software development methodologies ensuring system stability and performance.
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Python 8yr.
TensorFlow 8yr.
PyTorch 8yr.
SciPy 8yr.
PostgreSQL 2yr.
...
  • AI/ML Engineer with 8+ years leading projects in computer vision, NLP, and predictive modeling, leveraging Python, C++, and cloud platforms (AWS, Azure, GCP).
  • Expertise in designing scalable ML pipelines, time series forecasting, and real-time data processing using TensorFlow, PyTorch, Spark, and MLflow.
  • Proven track record managing teams and delivering AI-driven solutions including automated lead generation, chatbot systems, and image-based product classification.
  • Strong background in applied mathematics with Master’s degree, skilled in advanced algorithms, ensemble methods, and deep learning architectures (CNNs, Transformers, GNNs).
  • Hands-on experience with databases (MySQL, PostgreSQL), containerization (Docker), and cloud-native services for end-to-end ML lifecycle management.
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Architect/Team-lead
Ukraine
Python
C++
Scala
Apache Airflow
...
  • 15+ years of experience in IT;
  • Strong knowledge in Mathematics and physics (over 30 scientific publications);
  • Data Engineering and Data Architecture Experience
  • System-level programming, OOP and OOD, functional programming;
  • Profiling and optimizing code; Writing reliable code; Writing product documentation, supporting products;
  • Team working, team leading; Mentoring skills as a senior developer;

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Senior
Ternopil, Ukraine
Python 6yr.
SQL 6yr.
Apache Airflow
Apache Spark
AWS
...
  • Experienced Data Engineer and BI Developer with 6+ years of expertise in Database Design and Business Intelligence Development.
  • Proficient in cloud technologies such as Amazon Web Services (AWS), Google Cloud Platform, and Microsoft Azure.
  • Skilled in building high-performance data integration and workflow solutions, including ETL operations for data warehousing and supporting OLAP, OLTP, and Data warehouse systems. Experience in optimizing DWH performance and automating data pipelines;
  • Modern data engineer skills such as data modeling, data warehousing, data lake, data governance, and data quality.
  • Experience with big data technologies such as Hadoop, Spark, and Kafka, and experience with data streaming and real-time data processing.
  • Proficiency in SQL and NoSQL databases, Snowflake, and ClickHouse
  • Data visualization tools such as Tableau or Power BI.
  • Programming languages such as Python, Java, or Scala, and understanding of machine learning concepts, with experience building and deploying machine learning models.
  • Experience with CI/CD, data governance, and security best practices.
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Senior
Tashkent, Uzbekistan
Tableau
...
- 12+years of professional experience as a BI - Client's requirements analysis - Database modeling - Writing SQL scripts - Tableau data sources building - Tableau dashboard building - Intermediate English
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Senior
Zaporizhzhya, Ukraine
Communication Skills
SPSS
DATA ANALYST
...
- Experienced software engineer with a strong background in computer science and a Bachelor's degree in Economics and Sociology. - Proficient in various programming languages, including but not limited to Java, Python, and C++. - Skilled in software development methodologies, principles, and patterns, with a solid understanding of the SDLC. - Experienced in developing and implementing software solutions, with a focus on problem-solving and delivering high-quality products. - Familiar with a wide range of technologies and tools, including MS Office Suite, SPSS, STATA, and more. - Strong analytical and problem-solving skills, with the ability to collaborate effectively in cross-functional teams. - Excellent communication and interpersonal skills, with a proven track record of delivering results and exceeding expectations.
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JavaScript
TypeScript
PHP
Java
Python
...
- Senior Full-Stack Engineer with over 8 years of industry experience and a solid educational background with a Bachelor's degree in Computer Science from Holy Angel University. - Expertise in a wide range of programming languages (JavaScript, TypeScript, PHP, Java, Python, Golang, C#) and frameworks (React, Next.js, Vue, Node, Laravel, Django), enabling versatile full-stack development. - Proficient in modern DevOps and cloud technologies (Docker, Kubernetes, AWS, GCP), AI & ML implementations (PyTorch, TensorFlow), and creating responsive front-end applications that improve user experience. - A track record of building and maintaining large-scale, AI-integrated applications, such as a consumer savings app with 20,000+ active users. - Strong grasp of databases (MySQL, PostgreSQL, MongoDB, Firebase, Redis) and proficiency in Version Control (Git), improving collaboration and SDLC efficiency. - Demonstrated ability to drive projects from concept to deployment, with an emphasis on clean code, automated testing, and CI/CD practices.
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Python 7yr.
.NET 4yr.
ASP.NET Core Framework 4yr.
Node.js
FastAPI
...
A seasoned Senior Software & Machine Learning Engineer with extensive experience in backend engineering, AI/ML, and data engineering. With a decade of professional involvement, the engineer boasts a deep understanding of distributed computing and database design, having worked with technologies like .NET, Python, Spark, and Kubernetes. Education includes a BSc in Computer Science & Artificial Intelligence, reinforcing a solid foundation in modern engineering principles. Holds a proven track record of implementing intelligent systems, such as conversational AI platforms and deep learning models, that have significantly improved user engagement and reduced operating costs. The engineer's technical acumen is further highlighted by expertise in full-stack development, including the use of React, Svelte, and Angular, and in creating robust cloud-based solutions leveraging AWS. This combination of practical experience and education makes the engineer a standout candidate for driving innovation and efficiency in complex software environments.
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Python
Java
JavaScript
C/C++/C#
PHP
...
Proven Software Engineer with robust academia in Intelligent Systems & Software Engineering, adept in Python, Java, and AI/ML technologies. Offers hands-on experience in AI model training and software development, with expertise in algorithm optimization and system design. Noteworthy involvement in developing an AI-augmented code optimization framework and a performance predictor project during BSc. Combines technical prowess with data annotation and model evaluation finesse, poised to thrive in AI innovation.
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Junior
Kerugoya, Kenya
Python 5yr.
JavaScript 5yr.
Java 2yr.
TypeScript
SQL
...
A highly proficient Full-Stack Developer with over 7 years of experience, specializing in AI and NLP applications alongside web development. Adept at optimizing large language models, designing intelligent systems, and developing full-scale software solutions. The engineer's technical skill set encompasses Python, JavaScript, TypeScript, Java, C++, and SQL, with mastery in AI & NLP tools such as Hugging Face and TensorFlow. Their proficiency extends to full-stack development with a focus on MERN stack and Vue.js, demonstrated by a history of delivering high-performance, responsive e-commerce platforms, and proprietary CMS interfaces. With a Bachelor's degree in Computer Science and a strong background in DevOps practices, cloud platforms, and deployment technologies, the candidate has a proven track record of enhancing backend performance and streamlining deployment pipelines, positioning them as an asset for technically demanding roles.
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Senior
Lviv, Ukraine
Python
Django REST framework
VBA
NLP
Data Validation
...
Software engineer with extensive expertise in Python, Django, and AI/ML integration, adept at developing high-performance, scalable solutions. Significant experience in AI model training, data validation, and physics-based simulations, contributing to innovation in AI-driven applications. Strong background in data analysis and visualization using tools like Tableau and Looker Studio. Proven success in mechanical systems design and optimization. Holds a B.Sc. in Business Administration and a suite of technical certifications, including HackerRank problem-solving and Python programming. Over a decade of professional experience, offering a rich blend of technical prowess, analytical acumen, and project management skills.
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Python 3yr.
Django 1yr.
SQL
...
Software Engineer with a Master's from Sharif University of Technology, specializing in machine learning and predictive modeling, particularly in blockchain data analysis. Technical skill set includes Python, JavaScript, SQL, along with frameworks like Django and FastAPI, and tools such as Docker and Git. Proven expertise in data analysis, machine learning, and web development, with experience designing RESTful API and backend systems. Adept at leveraging modern databases like PostgreSQL, MongoDB, Redis, and implementing agile methodologies for efficient software development. Key projects demonstrate strong capabilities in data pipeline construction, machine learning model development, and creative solution engineering for complex challenges.
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JavaScript 5yr.
TypeScript 5yr.
Python 5yr.
Node.js 5yr.
React 5yr.
...
A Senior Full Stack Engineer with a Master's in Information Technology from the University of Central Punjab, distinguished by strong expertise in JavaScript, TypeScript, Python, and notable experience in AI integration. Over 7 years of hands-on engineering practice across various roles in programming and team leadership. Proficiency in full-stack web development, scalable backend architecture, and cloud computing underscored by an excellent track record with Node.js, React.js, Next.js, and NestJS. Possesses extensive knowledge of cloud platforms like GCP and Vertex AI and demonstrates a deep understanding of Agile methodologies, CI/CD pipelines, and DevOps practices. Recognition for effectively leading development teams, mentoring junior engineers, and consistently delivering high-quality software solutions.
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Expert
Lahore, Pakistan
Sales strategies
RPA
Strategic Planning
Problem Solving
...
Seasoned Marketing and Sales professional with a demonstrated history in behavioural management systems training and team leadership in Brazil. Proven capabilities in sales strategy development, KPI management, and team expansion from 8 to 24 representatives. Notable achievements include a 20% increase in monthly sales and a spike in qualified leads. Skilled in HubSpot CRM implementation and proficient in PowerBI, with a strong background in process optimization and data analysis. Currently expanding expertise in business studies while gaining international experience in the Irish retail and food service sectors.
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Python
Java
JavaScript
C/C++/C#
PHP
...
Software Engineer with hands-on experience in AI training and software development. Proficient in Python, Java, C++, JavaScript, PHP, and MySQL. Skilled with TensorFlow, Scikit-Learn, and PyTorch. Master's and Bachelor's degrees in Software Engineering and Intelligent Systems from Kirinyaga University. Developed an AI-augmented code optimization framework and an academic performance predictor using ML techniques. Strong background in full-stack system development, machine learning model evaluation, dataset annotation, and software engineering research.
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Junior
Kerugoya, Kenya
Go
Observer
Kotlin Coroutines
Django Channels
MS SQL Server Management Studio
...
Seasoned Backend Engineer with over 5 years of experience specializing in Golang, adept at constructing scalable microservices and REST APIs. Demonstrated expertise in concurrency patterns and system design, backed by a strong computer science foundation with a B.E. in Computers achieving a 9.18 CGPA. Proficient in a wide array of technologies, including Go 1.18+, Gin, gRPC, PostgreSQL, and AWS cloud services, complemented by a hands-on background in DevOps practices like Docker and Kubernetes. Significant contributions to projects like a facilities management platform, industrial data management system, and e-commerce platforms, showcasing skills in optimizing database performance and developing high-performance APIs with sub-100ms response times. Embraces agile methodologies and has a proven ability to mentor other developers and lead technical initiatives.
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