11/29/2025 updated

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Seasoned Software Engineer with Product Minset

Bucharest, Romania M.Sc. Internet Systems Engineering
Bucharest, Romania M.Sc. Internet Systems Engineering

Profile attachments

Ionut Baranga's CV.pdf

Seasoned software engineer with a strong product mindset. With 12 years of full-stack, backend-heavy experience across cloud and on-prem environments, I have delivered purpose-fit solutions for startups, scale-ups, and corporates, across domains including e-Commerce, Sports Betting, Micro-Mobility, Logistics, and Ad-Tech.

I specialize in driving end-to-end delivery - from requirements analysis, use-case mapping, and solution architecting to development, deployment, and monitoring - always with a focus on delivering product value, supported by performance, scalability, and long-term system health.

Languages

EnglishFluent

Project history

Senior Software Engineer

FedEx
The client, a leading global logistics and courier delivery provider operating in over 220 countries, was expanding their collaborative-shipping services.

✔️ Enabled smoother customer onboarding and cross-party collaboration for compliant international shipments by delivering microservices, APIs, integrations, and secure link-sharing features across multiple parties

✔️ Supported successful service delivery by acting as the technical point of contact in multi-layered client meetings

✔️ Ensured system stability, performance, and smooth feature adoption during daily deployments through monitoring production logs, metrics, and alerts, and carefully planning and executing Optimizely Rollouts

✔️ Reduced technical debt by optimizing CI/CD pipelines (zero test flakiness after migrating integration tests to TestContainers) and upgrading services to the latest Spring Boot versions

✔️ Ensured smooth team transition and continued delivery by organizing knowledge-transfer sessions and detailing technical proposals in backlog items

Lead Backend Engineer

US startup in stealth mode

Internet & IT

The client, a US startup in stealth mode developing a social app, was looking for an expert-level back-end engineer to review, optimize and make production-ready the existing backend codebase, while also implementing additional features.

I took full responsibility of the backend development and worked in close collaboration with the company owner, a Google Cloud Expert and a Senior Mobile Developer.

✔️ Identified key user interactions areas in need for optimisation, by analyzing API usage patterns from the mobile app

✔️ Enhanced application security, maintainability and error handling by migrating it from JavaScript to TypeScript and adopting schema-based request validators, and introducing API integration testing

✔️ Improved data retrieval speed by optimizing MongoDB queries and indexing, including specialized geospatial queries

✔️ Ensured consistency across environments and reduced potential troubleshooting time by establishing prod-dev parity

✔️ Enhanced system monitoring capabilities by introducing structured logging 

Skills: Firebase · docker · MongoDB · Requirements Analysis · TypeScript · Technical Solution Design · REST API · Express.js · Node.js · Microservices

Hand-On Tech Lead & AWS Solution Architect

Digital Marketing Analytics SaaS Platform

Internet & IT

The client, a Digital Marketing Analytics SaaS Platform was looking to expand a market-proven product to serve a growing customer base while also enabling the development team to introduce new features more swiftly.

After a careful analysis of the existing codebase and infrastructure, I recommended and executed a redesign of the platform, leveraging AWS services to achieve the desired level of performance, security and scalability.

✔️ Documented the business domain and mapping out use cases, in close collaboration with the company's CEO and a team of three developers

✔️ Redesigned the platform with AWS, EKS, DynamoDB, S3, CloudFront, and CloudFormation

✔️ Supported the dev team with K8 knowledge, code reviews, development & observability best practices

✔️ Decreased delivery time to less than 3 minutes by introducing CI/CD pipelines in GitHub actions 

Skills: Amazon EKS · docker · Requirements Analysis · Technical Solution Design · Solution Architecture · REST API · Amazon SQS · Amazon Web Services (AWS)

Certificates

AWS Certified Clould Practitioner

Amazon Web Services Training and Certification

2023


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