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Sumit Raj

Engineering Manager

Bengaluru, Karnataka, India13 yrs 9 mos experience
AI ML PractitionerHighly Stable

Key Highlights

  • Over a decade of experience in product innovation.
  • Expert in AI-driven risk management solutions.
  • Proven track record in leading engineering teams.
Stackforce AI infers this person is a FinTech and SaaS expert with strong leadership in product strategy and technical innovation.

Contact

Skills

Core Skills

Technical LeadershipProduct StrategySoftware ManagementAlgorithmic TradingProject Delivery

Other Skills

AWS Elastic BeanstalkAWS LambdaAgenticAgile MethodologiesAmazon DynamoDBAmazon EC2Amazon S3Amazon SQSAmazon Voice Service & Alexa Skill KitAmazon Web Services (AWS)Artificial Intelligence (AI)Business AnalysisBusiness RequirementsChatbot DevelopmentCoding Standards

About

With over a decade of experience, I specialize in crafting innovative products from inception to fruition, collaborating closely with startups to achieve exponential growth. Remaining hands-on with coding and engineering teams, I thrive on mentoring and guiding fellow engineers towards success. Domain Experience:- FinTech | Real Estate | Revenue Management | Developer Platform | Location Tracking | Indian Stock Market | Forex | MT5 | Edtech | CRM Designing, Architecting and building products with technologies like AWS Lambda | EC2 | Auto Scaling | ELB | Target Groups | Launch Configurations | Route53 | S3 | MongoDB | SES | SNS | Pingdom | Blazemeter | Redis | Nginx | uWSGI | Webhooks | API Gateway | ElasticBeanStalk | DynamoDB

Experience

13 yrs 9 mos
Total Experience
2 yrs 10 mos
Average Tenure
1 yr 11 mos
Current Experience

Razorpay

Engineering Manager

Jul 2024Present · 1 yr 11 mos · Bengaluru, Karnataka, India

  • Leading the Risk, Trust & Safety Charter at Razorpay
  • Currently driving the strategic vision and execution of Razorpay’s Trust & Safety initiatives with a focus on proactive risk management, platform integrity, and scalable product innovation. My core responsibilities include:
  • Strategic Direction – Defining the long-term Trust & Safety strategy, identifying high-impact investment areas to enhance Razorpay’s risk resilience.
  • AI-Powered Risk Intelligence – Designing and launching new platform capabilities that leverage data and AI/ML to detect and prevent malicious behavior across both merchant and customer touchpoints—while maintaining a seamless merchant experience.
  • Operational Excellence through Automation – Championing AI-driven internal automation to streamline fraud operations and enhance efficiency.
  • Fraud Pattern Surveillance & Response – Building systems to proactively track emerging fraud vectors and open risks, and collaborating cross-functionally to close gaps and safeguard Razorpay against financial and compliance threats.
  • SaaS Platform Innovation – Productizing internal risk capabilities into a 0-to-1 SaaS offering tailored for banks and merchants, enabling the broader ecosystem to benefit from Razorpay’s trust infrastructure.
  • Payments Platform for Recon (Reconciling Millions of txn everyday) & Recon SaaS (0-1).
  • Led a team of 17 engineers. Managing more than 90+ gateways.
  • Developed in-house Reconciliation Solutions to detect mistakes, discrepancies, or fraud.
  • Automated Financial Reconciliation to enhance operational efficiency, reduce money loss & improve data accuracy.
  • Expertise in Large-Scale Data Processing using Apache Spark and EMR
  • Built High-Throughput Batch Processing Solutions handling over 2,000 batch instances at 1K TPS
  • Building an AI based Ingestion of merchant data and reconciliation solution for seamless UPI, NetBanking, Cards, Wallet, Affordability, Gift Cards Reconciliation
n8nLangChainAgenticArtificial Intelligence (AI)cursorGo (Programming Language)+5

Unacademy

2 roles

Engineering Manager

Promoted

Jul 2022Jul 2024 · 2 yrs · Bengaluru, Karnataka, India

  • As an EM took end to end responsibility of Growth and Payments team of Unacademy responsible to manage payment system of 500-600 Cr annually
  • Led multiple refactoring and optimization projects to reduce cost while keeping 100% uptime of the services
  • Worked with Sales and Business team to set up processes for seamless co-ordination in order to improve throughput and productively of the team
  • I also worked as an IC during the critical times of the company where I
  • Owned engineering efforts for the revenue vertical
  • Responsible for architecture, implementation and delivery for various 0-1 products
  • Conceptualise, Designed, Architected, Implemented & successfully launched the in-house CRM for a sales team of over 5000+ business executives to optimise revenue generation via sales/leads conversion
  • Built and managed a team from scratch within Unacademy for handling Sales Technology initiatives, responsible for managing realtime event tracking across the platform, data engineering pipelines, sales incentive calculation, dialler/outbound-calling systems
Technical DocumentationProblem SolvingProduct StrategySoftware ManagementCoding StandardsTechnical Writing+9

Engineering Lead

Feb 2021Jul 2022 · 1 yr 5 mos · Bengaluru, Karnataka, India

  • Worked on building multiple 0-1 products as Lead
  • Not just led the team but played as an IC and code 80% of the time
  • Built in house tool called Atlas for educator management, KPMG auditing features, Contract management, Learner Management, Unacademy Centres quality dashboard for Leadership and verious other metrics tracking.
  • Built a web-app and ETL pipeline to extract data from Analytics DB and do queries to show vertical, group, category, goal level revenue single handedly.
Technical DocumentationProblem SolvingSoftware ManagementCoding StandardsTechnical WritingTeam Leadership+2

Apress

Internationally published Author of "Building Chatbots with Python" & Guest Blog Contributor

Dec 2018Jan 2021 · 2 yrs 1 mo · Greater New York City Area

  • Authored the book "Building Chatbots with Python - using Natural Language Processing and Machine Learning" published by Apress, New York. Later translated in Portuguese and Korean.
  • Book: https://amzn.to/2SmOnmB
  • Blog Post - Conversing with Bots: https://www.apress.com/us/blog/all-blog-posts/conversing-with-bots/16172596
  • Blog Post - Deploying Chatbots On Facebook: https://www.apress.com/us/blog/all-blog-posts/deploying-chatbots-on-facebook/16172662
  • Book Review by a popular Python blogger: https://coolpythoncodes.com/chatbots-python-book-review/
  • #chatbots #conversationalAI #NLP #AI #ML #spaCy #NLTK #conversationalAgents #DialogFlow #Rasa
Technical WritingTechnical LeadershipProject Delivery

Roam.ai (formerly geospark)

Senior Architect

May 2018Feb 2021 · 2 yrs 9 mos · Bengaluru, Karnataka, India · On-site

  • Design & Architecture of a system handling 20,000+ RPS & TBs of data cleaning & crunching
  • Serverless APIs, millions of logging every second using techs like Lambda, Kinesis Data Stream/Delivery Stream, S3, Redshift, API Gateway.
  • Hired and built the youngest team in terms of experience who helped build a system handling millions of requests/day
  • Solved Core Engineering problems with less cost and high reliability.
  • Location Intelligence & deriving user insights to help businesses understand their customer better
  • Part-time Product Management, Adding up new features, enhancements for better product usability & reliability. (Ideation => Design => Code => Delivery)
  • Optimizing the process of building good software and make it market-fit.
  • Learnt reviewing DPAs, Contract Terms, Software Licensing Agreements, Pricing Strategy for clients.
  • POC for any technical discussions, support for feature development, pilot for major clients.
Technical DocumentationProblem SolvingProduct StrategySoftware ManagementCoding StandardsTechnical Writing+8

Tapchief

Data Science Expert Mentor | Carrer Counselling & Advice | Mock Interviews

Jan 2018Feb 2021 · 3 yrs 1 mo · Online

  • Mentored 20 Postgraduate students for the diploma course on Data Analytics from IIIT-Bangalore for their 1.5 month capstone project.
  • 300+ calls for
  • ML Mock Interview
  • Resume Review
  • Career Counselling
  • Data Science & Data Analytics Special Request Mock Interview
  • Capstone Project Mentorship
  • Project Viva Call
  • I had the opportunity to guide people from almost 80+ unique companies where mentees are working or have worked with.
  • Below are a few to name:
  • American Express • Tata Consultancy Services • Accenture • HP
  • Microsoft • VMware • Amazon • Wipro • Limited • Infosys • Samsung Electronics
  • PHILIP MORRIS • Resolvo Systems • HungerBox • Target
  • Powerweave • Honeywell • Cognizant • Reactore • SAP Labs India
  • IBM • Huawei • Royal Bank of Scotland Business • Credit Suisse
  • Huntington National Bank • Cardinal Health • J.P. Morgan • Mphasis
  • Research Councils UK RCUK • Nokia • NTT DATA Services • Dell
  • Mindtree • GT Nexus • Silicon Labs • Verifone • Citibank India
  • Motorola Solutions • Concentrix • Honeywell • Tech Mahindra • Meditab
Algorithmic TradingTechnical WritingTechnical Leadership

Indian institute of science (iisc)

Guest Speaker

Aug 2016Aug 2016 · 0 mo · Bengaluru Area, India

  • Invited to give a talk on Natural Language Processing with Python. It was a 3 hour session organized at IISc, Bangalore in Golden Jublee Seminar Hall.
  • Topics Covered:
  • POS Tagging
  • Parsing
  • Stemming
  • Lemmatization
  • Generating sentences from context-free grammars
  • Logical Semantics
  • Building Chatbots in a day
  • Gender Classification using NLTK
  • Building a spam filter app using NLTK
  • http://sumitraj.in/blog/talk-on-natural-language-processing-at-indian-institute-of-science-bangalore/
Technical Writing

Lodgiq

Principal Engineer

Feb 2016May 2018 · 2 yrs 3 mos · Bangalore/San Francisco

  • A startup trying to crack Revenue Management with help of Machine Learning where I was leading the entire Backend Platform Development. (Web Application Architecture | Scalability | Performance & Cost Optimization [Helped reduce $$$$ with end-to-end automation by de-sparking the stack and using AWS & Open Source tools] )
  • Revenue Analytics + Data Mining + Data Science + Machine Learning + Python/Django + REST APIs + REDIS + RabbitMQ + Celery + MongoDB + AWS Spot Instances + Dockers
  • Hospitality Technology | Revenue Analytics | Pricing Recommendations | HotelTech
Technical DocumentationProblem SolvingProduct StrategyCoding StandardsTechnical WritingTeam Leadership+5

Hackhands

Python Mentor

Jan 2016Feb 2021 · 5 yrs 1 mo · Online

  • It’s like calling 911 for your code. When you need help, you push a button, and your request goes out to the HackHands’ community, a group of knowledgeable, vetted professionals. Within minutes, you’re connected with a mentor through video chat and screen share. Together, you can work through problems, edit code, review architecture, or talk through questions. You can get unstuck. Immediately.
  • As a hack.hands() expert, I get paid to help others in need, build relationships and reputation. Additionally, their platform allows me to help others at my convenience with no commitments, and takes care of reputation management and payments.
Algorithmic TradingTechnical WritingTechnical Leadership

Codementor

Expert Python Mentor (Featured in Top 10)

Oct 2015Feb 2021 · 5 yrs 4 mos · Online

  • Mentored and Pair Programmed with students/developers from all around the globe to teach them in sessions and resolve their doubts to fix any issue they are facing to develop something.
  • Featured in Top 10 Python Experts on codementor's website.
  • Mentoring | Code Help | Consulting | Rapid Prototyping | Quick Apps Development | Training | Python/Django Training | Python Workshop | Corporate Trainer
Algorithmic TradingTechnical WritingTechnical Leadership

Marketscanner

Technical Consultant

Sep 2015Jan 2017 · 1 yr 4 mos · Remote

  • Helping this awesome bootstrapped startup in the domain of Stock Market Research. Helped them with lots of problem solving using Python, Serverless setup for the trading bot to release their MVP for their paid customers.
  • https://marketscanner.in/about/
Problem SolvingProduct StrategyAlgorithmic TradingTrading StrategiesTechnical WritingTechnical Leadership+2

Commonfloor.com

Software Development Engineer

Jul 2015Feb 2016 · 7 mos · Bengaluru Area, India

  • At CommonFloor, I was working with CFx Team to build awesome products from ideation to production. Worked on Alexa Voice Service and Alexa Skill Kit to develop AIRA (Artificial Intelligent Real-Estate Assistant)
  • Built an AI chat bot to answer Home seekers query.
  • Real Estate | Startups | Ideas to Traction | Product Design & Architecture | Chatbots | NLP | AI & ML
Team Leadership

Yodlee infotech pvt ltd

Software Engineer

Jul 2013Jun 2015 · 1 yr 11 mos · Bangalore, India

  • My responsibilities included doing Change Requests, feature enhancement and fixing Functional, Security, Performance and UI issues in the product which directly impacts 50 million customers and 700 clients all across the globe.
  • I was responsible to give support at the time of Maintenance & Release of the product before the product is rolled out in the production.
  • I also worked as a core team member for the Hackathons organized by Yodlee.
  • Finance | FinTech | Personal Finance Management | Financial Applications | Hackathons | Ideation | Scalability

Headrun technologies

Freelance Developer

Aug 2012Aug 2014 · 2 yrs · Bangalore

  • My role was to write web crawlers for different websites as per requirement by the client.
  • Since it was a start-up , I was responsible for the complete life cycle for the development of the crawler from requirements to design and then development and testing.

Technix india solutions (p) limited

Intern

Jun 2011Jul 2011 · 1 mo · Patna Area, India

  • Web Portal Development using HTML, PHP, MySQL

Education

Dayananda Sagar College of Engineering, BANGALORE

Bachelor of Engineering (B.E.) — Information Science Engineering

Jan 2009Jan 2013

Coursera

A.N COLLEGE, BIHAR BOARD

12th — Intermediate of Science

Jan 2006Jan 2008

Stepping Stone Convent

Matriculation — General Studies

Jan 1994Jan 2006

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