Sarthak Vijay
Verified Expert in Engineering
Software Developer
London, United Kingdom
Toptal member since September 14, 2022
Sarthak is a tech leader and senior software engineer with over eight years of experience designing high-throughput, distributed systems in the cloud. He is an expert in the AWS stack, having led 0-1 platforms, and delivers resilient, cost-efficient machine learning (ML) and large language models (LLMs)-enabled solutions that operate at a 5,000-6,000 QPS scale.
Portfolio
Experience
- Algorithms - 5 years
- Spring Boot - 4 years
- Java - 4 years
- SQL - 4 years
- Back-end - 4 years
- REST APIs - 4 years
- AWS Lambda - 3 years
- Artificial Intelligence (AI) - 2 years
Preferred Environment
Java, SQL, Back-end, Spring Boot, Algorithms, AWS Lambda, Amazon Web Services (AWS), Python
The most amazing...
...project I've helped build from the ground up is a market-fit product that was later used by millions of people.
Work Experience
Senior Software Engineer
Amazon UK
- Designed and launched a back-end platform service that supported large-scale content classification and policy workflows, handling sustained 5,000-6,000 QPS with strict latency SLAs.
- Built real-time, event-driven pipelines on AWS that processed tens of millions of requests per month while improving reliability and observability.
- Migrated large datasets to a new ingestion pipeline, expanding data coverage from 3.8 million to 26+ million records and unlocking downstream machine learning (ML) use cases.
- Introduced ML-based pre-processing that reduced expensive inference calls and delivered more than $1 million in annual compute savings.
- Improved near-real-time classification coverage from 89% to around 94% and reduced duplicate processing by around 95%, saving approximately $50,000 per month.
Specialist Software Engineer
Societe Generale
- Collaborated with a team to formulate innovative solutions for regulatory reporting applications. Developed strategies and risk metrics to improve performance.
- Managed technical responsibility and improvement in development standards and engineering excellence.
- Built a brand new tool to improve the productivity and efficiency of QA and the support team.
- Awarded with the Position of Responsibility award in 2020.
Software Engineer
Tavant
- Performed a broker application development used by a leading lending institution for mortgage lending.
- Analyzed requirements, design, and application development using Java and Jakarta EE technologies.
- Spearheaded the development of the app's new version with additional functionalities.
Web Developer
RedCarpet
- Modified and developed the company's existing website and the user login flow.
- Created a new marketing micro-website and a marketing channel.
- Managed the database of all subscribers and increased traffic retention on the website.
Experience
Asset Valuation Tracker
The assets' categorization was based on risk, volatility, and liquidity. The app delivered recommendations based on current investment and risk profile to improve or diversify portfolio investment across other asset classes.
Geek1Vision
Education
Bachelor's Degree in Metallurgical Engineering
Indian Institute of Technology (BHU) - Uttar Pradesh, India
Certifications
Object-oriented Design
Coursera
Object-oriented Programming in Java
Coursera
Skills
Libraries/APIs
REST APIs
Tools
IntelliJ IDEA, Git, Amazon Elastic MapReduce (EMR)
Languages
Java, SQL, TypeScript, Java 8, Python
Frameworks
Spring, Spring Boot
Paradigms
Microservices
Platforms
Linux, AWS Lambda, Amazon Web Services (AWS)
Storage
Databases
Other
Back-end, Algorithms, Distributed Systems, Web Scraping, Web Applications, API Applications, Design, System Design, Data Structures, APIs, Artificial Intelligence (AI)
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
Share your needs
Choose your talent
Start your risk-free talent trial
Top talent is in high demand.
Start hiring