Deepak Malik

Backend Engineer

Bengaluru, Karnataka, India4 yrs 3 mos experience

Key Highlights

Achieved 97.6% infrastructure cost reduction at Amazon.
Developed high-performance systems handling 784M+ records.
Led cost optimization initiative using DuckDB and WebAssembly.

Stackforce AI infers this person is a Full Stack Engineer with expertise in SaaS and Fintech industries.

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Skills

Core Skills

Backend EngineeringDistributed SystemsFull Stack DevelopmentWeb Development

Other Skills

JavaTypeScriptAWSmodern frontend frameworksGo (Programming Language)PostgreSQLBackend DevelopmentStripo APIMySQLAmazon Web Services (AWS)PDF generationGolangReact.jsNode.jsFirebase

About

Software Development Engineer II at Amazon with experience building scalable, high-performance systems across frontend and backend. I specialize in distributed systems, backend engineering, and data-intensive applications, with hands-on experience in Java, Go, AWS, and modern web technologies. My work focuses on designing systems that are reliable, cost-efficient, and scalable. At Amazon, I contributed to Growth Planner as a full-stack engineer, owning features end-to-end and improving system reliability. I also led a cost optimization initiative using DuckDB and WebAssembly (WASM), enabling in-browser analytics and eliminating backend dependencies for read-heavy workloads. This reduced infrastructure costs by 97.6% while delivering sub-second query performance at scale (784M+ records, 22TB datasets). I have strong experience in system design, API development, database optimization, and performance tuning. Previously, I built high-scale backend systems, optimized APIs to sub-100ms latency, improved CI/CD pipelines, and delivered features that improved customer engagement and revenue. I enjoy solving complex engineering problems, exploring new technologies, and building systems that balance performance, scalability, and business impact.

Experience

4 yrs 3 mos

Total Experience

1 yr 1 mo

Average Tenure

10 mos

Current Experience

Amazon

Sde-2

Jul 2025 – Present · 10 mos · Bengaluru

Contributed as a Full-Stack Engineer on a seller-facing analytics platform, building scalable systems across frontend and backend.
Owned end-to-end feature development, resolving 14+ critical frontend and backend issues to improve system reliability and user experience.
Designed and built an in-browser analytics solution using DuckDB and WebAssembly (WASM), eliminating backend API dependencies for read-heavy workloads.
Achieved 97.6% infrastructure cost reduction ($60K/year → $1.6K/year) while delivering sub-second query performance (<200ms) on large-scale datasets (784M+ records, 22TB).
Proposed and contributed to a reusable architecture pattern enabling faster dashboard development, which was adopted across teams.
Extended this approach across multiple internal platforms, building a 3-page dashboard within ~6 hours using AI-assisted development, demonstrating rapid development and scalability.
Participated in system design discussions focused on scalability, distributed systems, and cost optimization.
Demonstrated ownership by stepping in for stakeholder communication during Tech Lead absence and ensuring alignment across cross-functional teams.
Worked with technologies including Java, TypeScript, AWS, distributed systems, and modern frontend frameworks to build high-performance applications.

JavaTypeScriptAWSdistributed systemsmodern frontend frameworksBackend Engineering+1

Nielsen

Member of Technical Staff 2

Sep 2024 – Jul 2025 · 10 mos · Gurugram, Haryana, India

Sinch

Full Stack Engineer

Sep 2023 – Sep 2024 · 1 yr · Noida, Uttar Pradesh, India · Hybrid

Sinch - SaaS-Based Product Company
Developed A/B Testing Feature:
Situation: Clients needed a way to optimize their email campaigns, particularly to increase the open rates of promotional emails.
Task: Develop an A/B testing feature.
Action: Designed the schema in PostgreSQL, developed the backend, and implemented a user-friendly dashboard for A/B testing.
Result: Increased campaign effectiveness by 20%, attracting major clients.
Optimized Email Creation Process:
Situation: The email creation process was inefficient.
Task: Enhance the email creation workflow.
Action: Integrated Stripo API to introduce a drag-and-drop editor.
Result: Reduced email creation time by 30% and improved engagement rates by 7%.
Streamlined Testing Processes:
Situation: Testing processes were prone to errors and were time-consuming, leading to wasted developer hours.
Task: Optimize the email testing workflow.
Action: Developed a customized send test email feature.
Result: Saved 1 hour per testing cycle and minimized errors.
Automated Domain Verification:
Situation: Manual domain verification was labor-intensive for the customer team.
Task: Automate the domain verification process.
Action: Developed an automated verification system.
Result: Reduced manual effort by 30%.
Optimized CI/CD Pipeline:
Situation: Large build images were slowing down the CI/CD pipeline.
Task: Optimize the build process.
Action: Utilized multi-stage Docker builds.
Result: Reduced build image size by 93%.

Go (Programming Language)JavaFull Stack Development

Undostres

Software Engineer

Jan 2022 – Aug 2023 · 1 yr 7 mos · Remote

UnDosTres is Mexico's largest B2C payments platform, having received series B funding and achieving $50 million in annual sales, with 4 million monthly transactions and 5 million app downloads. I joined UnDosTres as a Full Stack Developer.Technical project highlights:
Integrated Entertainment Merchants:
Situation: Need to integrate new merchants for ticket booking.
Task: Develop and integrate a streamlined booking system.
Action: Implemented complete functionality with a recovery system, including PDF generation and fraud prevention metrics such as showing the last opened PDF timing PLUS COUNT, all hosted on AWS.
Result: Achieved 99% accuracy in ticket recovery.
Migrated Legacy APIs:
Situation: Legacy PHP APIs were slow.
Task: Migrate APIs to modern languages.
Action: Rewrote APIs in Java and Golang.
Result: Achieved sub-100ms latency.
Integrated Payment Providers:
Situation: Need for diverse payment options.
Task: Integrate new payment providers.
Action: Implemented integration for OpenPay and OxxoPay.
Result: Expanded payment options for users.
Developed Fraud Detection System:
Situation: High rate of fraud and misuse.(13%)
Task: Develop a fraud detection system
Action: Implemented bot detection and user fingerprinting.
Result: Saved 75k MXN in the first month
Improved Notifications:
Situation: Low engagement with bill payment reminders.
Task: Enhance the reminder notification system.
Action: Implemented notifications via CleverTap.
Result: Increased revenue by 7%.
On-call Responsibilities & Code Contributions:
Situation: Need for reliable code contributions and on-call support.
Task: Manage codebase and on-call duties.
Action: Actively contributed code and provided support.
Result: Maintained operational efficiency.
Leadership highlights:
Conducted interviews for tech roles from top colleges, including IIT, NIT, and DTU.

MySQLAmazon Web Services (AWS)Full Stack Development

Lofty dreams pvt. ltd

Web Developer

Apr 2021 – Jul 2021 · 3 mos · Delhi, India

Designed a E-commerce website for Lofty Dreams Recliners Pvt. Ltd. As a team we designed, developed, hosted, and managed the website. We made it from scratch using React.js & Firebase.

React.jsNode.jsWeb Development