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Senior Full Stack Software Engineer with 13+ years of experience building and scaling cloud-native, distributed systems across fintech, healthcare, SaaS, and enterprise platforms. Specializes in designing high-performance backend architectures using .NET (C#, ASP.NET Core), Java (Spring Boot), and Python (FastAPI, Django), with strong capability in modern frontend development using React and TypeScript when needed. Proven track record of leading end-to-end system design, from microservices and event-driven architectures to resilient REST/gRPC APIs, deployed on AWS and Azure with Docker and Kubernetes. Deep experience integrating AI-driven solutions, including LLM-based systems, RAG pipelines, and intelligent automation, into production environments. Strong focus on scalability, reliability, and engineering excellence, with hands-on expertise in CI/CD, observability, and secure system design. Comfortable driving technical decisions, collaborating crossfunctionally, and delivering impactful solutions across the full stack.…Senior Full Stack Software Engineer with 13+ years of experience building and scaling cloud-native, distributed systems across fintech, healthcare, SaaS, and enterprise platforms. Specializes in designing high-performance backend architectures using .NET (C#, ASP.NET Core), Java (Spring Boot), and Python (FastAPI, Django), with strong capability in modern frontend development using React and TypeScript when needed. Proven track record of leading end-to-end system design, from microservices and event-driven architectures to resilient REST/gRPC APIs, deployed on AWS and Azure with Docker and Kubernetes. Deep experience integrating AI-driven solutions, including LLM-based systems, RAG pipelines, and intelligent automation, into production environments. Strong focus on scalability, reliability, and engineering excellence, with hands-on expertise in CI/CD, observability, and secure system design. Comfortable driving technical decisions, collaborating crossfunctionally, and delivering impactful solutions across the full stack.

ANDRE DENNIS

Full Stack Developer, Back-End Developer, Front-End Developer, +4

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Senior Full Stack Software Engineer with 13+ years of experience building and scaling cloud-native, distributed systems across fintech, healthcare, SaaS, and enterprise platforms. Specializes in designing high-performance backend architectures using .NET (C#, ASP.NET Core), Java (Spring Boot), and Python (FastAPI, Django), with strong capability in modern frontend development using React and TypeScript when needed. Proven track record of leading end-to-end system design, from microservices and event-driven architectures to resilient REST/gRPC APIs, deployed on AWS and Azure with Docker and Kubernetes. Deep experience integrating AI-driven solutions, including LLM-based systems, RAG pipelines, and intelligent automation, into production environments. Strong focus on scalability, reliability, and engineering excellence, with hands-on expertise in CI/CD, observability, and secure system design. Comfortable driving technical decisions, collaborating crossfunctionally, and delivering impactful solutions across the full stack.…Senior Full Stack Software Engineer with 13+ years of experience building and scaling cloud-native, distributed systems across fintech, healthcare, SaaS, and enterprise platforms. Specializes in designing high-performance backend architectures using .NET (C#, ASP.NET Core), Java (Spring Boot), and Python (FastAPI, Django), with strong capability in modern frontend development using React and TypeScript when needed. Proven track record of leading end-to-end system design, from microservices and event-driven architectures to resilient REST/gRPC APIs, deployed on AWS and Azure with Docker and Kubernetes. Deep experience integrating AI-driven solutions, including LLM-based systems, RAG pipelines, and intelligent automation, into production environments. Strong focus on scalability, reliability, and engineering excellence, with hands-on expertise in CI/CD, observability, and secure system design. Comfortable driving technical decisions, collaborating crossfunctionally, and delivering impactful solutions across the full stack.

Available to hire

Senior Full Stack Software Engineer with 13+ years of experience building and scaling cloud-native, distributed
systems across fintech, healthcare, SaaS, and enterprise platforms. Specializes in designing high-performance
backend architectures using .NET (C#, ASP.NET Core), Java (Spring Boot), and Python (FastAPI, Django), with
strong capability in modern frontend development using React and TypeScript when needed.
Proven track record of leading end-to-end system design, from microservices and event-driven architectures to
resilient REST/gRPC APIs, deployed on AWS and Azure with Docker and Kubernetes. Deep experience
integrating AI-driven solutions, including LLM-based systems, RAG pipelines, and intelligent automation, into
production environments.
Strong focus on scalability, reliability, and engineering excellence, with hands-on expertise in CI/CD,
observability, and secure system design. Comfortable driving technical decisions, collaborating crossfunctionally, and delivering impactful solutions across the full stack.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer at Utility

August 1, 2022 - March 1, 2026

Designed and implemented distributed, cloud-native microservices using C# (.NET Core), Java (Spring Boot), and Python (FastAPI) deployed on AWS (EKS, ECS, S3, DynamoDB, RDS). Led end-to-end LLM-powered enterprise workflows with Retrieval-Augmented Generation (RAG) pipelines using LangChain and vector databases, improving knowledge retrieval accuracy by 40%. Architected secure REST and gRPC APIs with OAuth2/OIDC-based authentication and fine-grained RBAC for multi-tenant environments. Built scalable backend systems handling high-volume transactional data with Kubernetes-based horizontal scaling and auto-scaling. Developed full-stack features with React + TypeScript, optimizing rendering and performance. Integrated third-party financial APIs for credit bureau, identity verification, and payments. Implemented event-driven processing with RabbitMQ/JMS for loan status, underwriting events, document submissions, and notification pipelines. Model serving infrastructure using ONNX and TensorRT

Software Engineer at Google

May 1, 2018 - July 1, 2022

Architected scalable backend systems using Java (Spring Boot), Node.js, and Python for analytics and recommendations serving millions of users. Designed microservices with event-driven patterns using Kafka for real-time scoring and forecasting. Built and optimized REST and gRPC APIs with strict SLAs. Engineered data pipelines using Spark and Airflow for ingestion, transformation, and retraining ML models across distributed environments. Led ERP modernization, migrating legacy monoliths to Spring Boot microservices with Angular and React frontends, enabling modular service orchestration and improved maintainability. Implemented high-performance backend using Hibernate/JPA/JDBC, and optimized indexing to improve throughput; reduced query latency by 10–20%. Implemented distributed caching with Redis and in-memory data grids. Built frontend apps with Angular 17–19, React, Vue, TypeScript, and Material UI for responsive design. Improved API performance by 30% via query optimization, Red

Software Engineer at Itransition

January 1, 2012 - April 1, 2018

Designed modular backend services using .NET Core, NodeJS, and Django for fraud detection, ranking, and personalization. Re-architected legacy monolithic systems into service-oriented architectures, improving deployment velocity and reducing downtime by 25%. Built event-driven data processing pipelines using Spark and Airflow for reporting, analytics, and compliance monitoring. Developed responsive administrative dashboards using React and TypeScript, delivering near real-time operational metrics and A/B testing insights. Optimized SQL queries and schema designs in PostgreSQL and MySQL to support high-volume transactional and reporting workloads. Implemented distributed caching layers using Redis, significantly reducing API response times under peak loads. Introduced automated testing frameworks (unit, integration, regression). Led refactoring initiatives replacing legacy C#/Java modules with Python-based services to support ML integration. Established CI/CD pipelines using Jenkins and