SaaS Developer with 5 years of experience. Working on AI-based projects involving computer vision and GenAI pipelines using Python. Hands-on experience with Laravel (10/11/12), Node.js/Express, and Go for backend development, and VueJS, ReactJS, NuxtJS, and NextJS for frontend work. In past created future proof api's those are currently handling 100K+ concurrent users.

Staff Software Engineer | Business-Focused Development | AI-Powered Development With 10+ years of experience across startups and Amazon/AWS, I've learned that great software starts with having clear understanding of product requirements and a technical implementation plan that fits in the landscape of the existing architecture. I am a firm believer in translating requirements to tests and then using agentic coding workflows to deliver. What I do: - Full-Stack Development: React, TypeScript, Node.js/Express, GraphQL, Python, REST APIs - Build high-performance data systems - Architecture and data modeling consultations - Application performance optimization How I work: I ask questions. I want to understand your users, constraints, existing code, and what success looks like before implementation. Once I have a clear understanding I start implementation with the use of claude code and cursor.

I have experience more than 12 years as web-developer. I work with Elixir almost 3 years. I prefer to work as Elixir developer.

I specialize in blockchain engineering(experience in DeFi protocol design and MEV strategies),BigData development and Agentic AI development. As a former tech lead and engineer at major industry players, I bring a deep understanding of smart contract development and on-chain optimization. I excel at building high-performance bots for arbitrage and front-running, ensuring efficient execution of complex trading strategies. I have several years of experience in big data and have worked with Elasticsearch, ClickHouse, Spark, Flink, and other technologies. I am also skilled in Agent development and familiar with the Langchain development workflow. My expertise extends to writing clear technical documentation that facilitates seamless collaboration and project onboarding. If you're looking for a knowledgeable partner to enhance your blockchain projects, refine your DeFi protocols or enhance your AI work flow, let's connect. I look forward to discussing how my skills can contribute to your success.

As a seasoned Senior Backend Developer with extensive experience in designing, developing, and deploying robust enterprise solutions, I bring expertise in leveraging Backend technologies to deliver high-performance applications. My strengths lie in object-oriented programming, microservices architecture, and optimizing software performance for scalable solutions. Skills and Expertise Core Java & Advanced Frameworks: Proficient in Spring Boot, Hibernate, and RESTful APIs. JavaScript. Cloud & DevOps: Hands-on experience with AWS, Kubernetes, and CI/CD pipelines. Database Management: Skilled in SQL, NoSQL databases, and database optimization. Problem-Solving: Adept at debugging, performance tuning, and ensuring code quality with modern best practices. Accomplishments: Enterprise Application Development: Led the successful migration of a monolithic legacy system to a cloud-based microservices architecture, improving system uptime by 30%. Process Improvement: Implemented automated testing frameworks that reduced QA cycles by 40%.

I help startups and tech companies build reliable backend systems and data infrastructure that actually scale — from event-driven pipelines processing millions of records a day, to production-ready AI features backed by fine-tuned models and solid engineering decisions. Over the past 4+ years, I've worked on international projects as a backend and data engineer, leading a cross-functional team while staying hands-on with architecture and technical strategy. My core focus is distributed systems — I've designed and maintained telemetry pipelines handling ~50M events/day using Kafka, gRPC, PostgreSQL, and Kubernetes. I also bridge the gap between product and engineering, translating business needs into grounded tech decisions — not just picking trendy stacks, but evaluating tradeoffs with real benchmarks and first-principles thinking. What I can help you with: Data Engineering — event-driven pipelines, real-time ingestion, geospatial analytics, Kafka-based architectures. Backend / API Development — Node.js, Go, Python; REST & gRPC; scalable microservices. Cloud & DevOps — Kubernetes, Docker, Terraform; CI/CD; on-premise and cloud infrastructure. AI / LLM Integration — RAG pipelines, vector databases, LLM orchestration, integrating AI features into production systems. Model Fine-Tuning — LoRA/QLoRA fine-tuning, augmented benchmarking, evaluating model performance for domain-specific use cases. Tech Strategy & Decision Making — architecture reviews, benchmark-driven model/tool selection, stack evaluation for long-term maintainability. I don't just implement — I think about why a solution makes sense, whether it's choosing between self-managed vs. managed infrastructure, evaluating LLM providers on SWE-bench and task-specific metrics, or designing a caching strategy that handles real-world edge cases. I take ownership seriously. I communicate clearly, flag issues early, and care about shipping things that work long-term — not just things that demo well. Available full-time · $30/hr · Jakarta, Indonesia (GMT+7)

I'm a Data & AI Engineer with 6+ years of experience building cloud platforms, AI applications, and data pipelines. I currently work as the sole Data & AI Engineer for an NHS SaaS company, where I design and maintain AWS infrastructure, build secure healthcare data platforms, and develop AI solutions that process sensitive patient data. I enjoy solving complex technical problems and building systems that are reliable, scalable, and easy to maintain. Whether it's a production RAG system, an AI agent, an AWS migration, or a modern data platform, I focus on delivering solutions that people can actually use—not just demos. ### What I can help you with **AI & LLM Applications** * Retrieval-Augmented Generation (RAG) * AI Agents (LangGraph & LangChain) * Document Intelligence * Knowledge Base Chatbots * Multi-Agent Workflows * OpenAI, Claude & Amazon Bedrock integrations * FastAPI backends for AI applications * Vector databases (pgvector, Pinecone, ChromaDB) **AWS Cloud** * AWS Architecture * ECS/Fargate * Lambda * EC2 * S3 * RDS * Redshift * API Gateway * IAM * Secrets Manager * CloudWatch * Terraform * Docker * GitHub Actions CI/CD **Data Engineering** * Python * SQL * dbt * Dagster * Airflow * Snowflake * Redshift * ClickHouse * PostgreSQL * ETL & ELT Pipelines * Data Warehousing * Data Modelling ### A few projects I've worked on • Built a healthcare data platform on AWS that processes sensitive patient data securely. • Developed production RAG systems that allow teams to search contracts, reports, PDFs, and other documents with accurate, source-cited answers. • Built AI agents that automate document review, data extraction, and business workflows. • Designed AWS infrastructure using Terraform, Docker, ECS, Lambda, and GitHub Actions. • Built ETL pipelines and modern data warehouses using Redshift, Snowflake, dbt, and Python. ### Why clients like working with me I don't just write code—I like understanding the business problem first and then designing a solution that will still work six months or two years from now. I communicate regularly, keep projects well documented, and take ownership of my work from planning through deployment. Although I'm new to Upwork, I'm not new to building production systems. My goal here is to build long-term relationships by delivering quality work and being someone clients can rely on.

My focus is on creating robust, future-proof systems with clear logging, structured outputs, and minimal dependencies, ensuring every project is transparent, reliable, and built for long-term success. I specialize in advanced Claude AI workflows and multi-model orchestration for executives, investors, and professionals. I have also built a native macOS application in Swift that runs Claude as production infrastructure, including indexed session search, persistent project memory, automated hooks, and scheduled agent orchestration. My focus areas include custom skills and automations that compress multi-step workflows into single commands, MCP and connector integrations into calendar, email, and document storage, scheduled autonomous agents for background research and monitoring, and structured pipelines for high-volume document analysis and investment research.

Hi! I’m a software engineer with over 5 years of experience. I help create scalable, reliable, and efficient server-side solutions for your applications. My expertise includes designing APIs, integrating third-party services, and optimizing system performance. My projects involve working with high-load platforms, e-commerce solutions, and fintech applications where precision and speed are critical. I focus on writing clean, maintainable code and delivering on time.

Hello! I am Taron, a PHP developer with over six years of experience, during which I have worked on high-load projects (over 10000 RPS). Throughout my career, I have worked with frameworks such as Laravel and Symfony, Docker, and CI/CD, as well as deployed projects on Linux using Nginx. I have been involved in performance optimization, data security (encryption, SOLID, DRY, KISS principles), and integration of third-party services such as Facebook API, CloudPayments, Cryptadium, Capitalist, Stripe, Amplitude, Yandex Metrica... I also have experience working with asynchronous queues (Laravel Queues, Redis), analytics on ClickHouse, and real-time interactions via WebSocket and Pub/Sub. In my professional practice, I have actively participated in the development of scalable and stable solutions.