Full Stack Engineer - Java, Go, Microservices

UTKARSH SAXENA

Lucknow, India +91-911******* *******.****.*******@*****.***

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Full Stack Software Engineer Java, PHP, Node.js, Go Microservices & Event-Driven Systems AWS PROFESSIONAL SUMMARY

Full Stack Software Engineer with 4+ years of experience building and scaling SaaS products across PHP, Java, Node.js, and Go. Skilled in event-driven systems, distributed systems, microservices architecture, monolith-to-SOA migrations, and SQL/NoSQL performance tuning. Proven ability to deliver production-grade systems with 80%+ test coverage and full observability across dev, staging, and production environments.Working knowledge of Agile methodologies and experience in a Scrum environment. TECHNICAL SKILLS

Languages: Java, PHP, Go (Golang), Python, JavaScript, HTML, CSS, Bash/Linux Backend: Laravel, CakePHP, CodeIgniter, Yii, Express.js, Nest.js, Spring Boot, Micronaut, GraphQL Frontend: Alpine.js, Tailwind CSS, Redux, AJAX, WebSockets, Socket.io Databases & Caching: MySQL, PostgreSQL, MongoDB, Redis Messaging / Queues: Apache Kafka, RabbitMQ, ActiveMQ, AWS SQS, Laravel Queues ORMs: Eloquent, Hibernate, TypeORM, Drizzle ORM

Cloud & DevOps: AWS (S3, RDS, ECS, SQS, Cognito, Lambda/Serverless, Load Balancer, CloudWatch), GCP, Docker, CI/CD, Git, Bitbucket, DynamoDB, CI/CD pipelines, DataDog

Auth & Integrations: AWS Cognito, Cerbos (RBAC), OAuth2, JWT, Google 2FA, Stripe Payment Integration Concepts: REST APIs, Microservices, SOA, Event-Driven Architecture, SaaS Product Development, JSON-Logic AI Tools: LLMs, Claude, ChatGPT, Cursor AI

PROFESSIONAL EXPERIENCE

Software Engineer II Codevyasa Nov 2025 – Present

Solely designed and built a new CakePHP-based queue feature (ActiveMQ) for a client-facing data-sync service handling ~200 messages/hour, implementing dead-letter queue handling, automated message retries, duplicate-detection, and failure-recovery for reliable asynchronous processing.

Contribute to API development and peer code reviews as part of the core backend engineering team. Software Engineer Studio Graphene (UK / US / Europe) Jul 2024 – Oct 2025

Built and maintained web applications in LAMP (Core PHP, Laravel), designing event-driven workflows using AWS SQS and integrating S3, RDS, ECS, and Serverless (Lambda) services.

Implemented authentication and authorization using AWS Cognito and Cerbos (RBAC) to enforce fine-grained access control across services.

Migrated legacy backend from PHP (Yii) to Node.js (Express.js) and database from MySQL to PostgreSQL, supporting the move from monolithic to Service-Oriented Architecture — achieving max 2ms API response time.

Built frontend components using Alpine.js, and Tailwind CSS.

Developed browser extensions and supported CI-based deployments. SDE-1 Visdum Tech (Sales Compensation SaaS) Apr 2024 – Jul 2024

Engineered Laravel Queues to parse large Excel datasets, tuning sync/async queue performance.

Used JSON-Logic (infix-to-postfix) to power compensation calculations.

Implemented WebSockets and broadcasting for real-time data updates, reducing database hits by 40%.

Built React frontend features including DOM manipulation, modals, Redux, and async/await patterns.

Used MySQL (stored procedures), Redis (cache/queue), and MongoDB for activity logs. Software Engineer Hale HIT Labs (US Healthcare) Nov 2023 – Mar 2024

Built food-admin and restaurant-admin portals for Eatingpoints.app (food delivery web/mobile app), enabling restaurant and dish management in production.

Integrated Stripe payments into the Eatingpoints.app platform.

Delivered nearmelisting.com (USA Local Business Directory) and optimized SQL queries, improving API response time from 8ms to 2ms.

Configured Auth0 for authentication across 3 environments (dev, staging, production), integrating JWT validation with environment- specific issuer and audience settings across multiple services.Learned about Oracle FHIR protocols. Associate Software Engineer iZooto (Marketing Automation SaaS) Jan 2022 – Jul 2023

Led full backend migration from PHP (Laravel) to Java (Spring Boot) using JDBC, Gradle, and JVM tuning.

Owned product development, release, and maintenance cycles for subscriber-engagement features, coordinating releases across dev, staging, and production environments.

Reduced processing load on high-traffic subscriber-count and impression-tracking jobs by 50% using Go routines and optimized MySQL/MongoDB queries — cutting average job runtime from 10s to 3s.

Built queue-based pipelines with Kafka and RabbitMQ processing ~100k messages/day across 6 downstream services using go routines

Integrated third-party APIs including Google 2FA, Google Login, and OAuth2. EDUCATION

B.Tech, Computer Science & Engineering — GLA University (2018 – 2022)

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