Sourabh Jajoria

CEO

Delhi, India9 yrs 6 mos experience
Highly Stable

Key Highlights

  • Designed scalable contest platform for 1M+ users.
  • Revamped legacy systems, improving scalability and availability.
  • Led tech branding and continuous learning initiatives.
Stackforce AI infers this person is a SaaS and Fintech expert with a strong focus on scalable system architecture.

Contact

Skills

Core Skills

Software ArchitectureSoftware DevelopmentMentoringSoftware DesignHigh-level DesignDistributed SystemsAlgorithmsReact.jsPhp

Other Skills

Apache KafkaBootstrapCC++CSSCode ReviewData StructuresDesign ReviewDjangoDomain ModelingElasticsearchErlangFunctional ProgrammingGitGoogle Material Design

About

Engineering leader with experience across robotics, service marketplaces, and trading. Skilled at building products from the ground up, scaling teams, optimizing systems, and driving ambiguous cross-functional initiatives. Passionate about fostering engineering cultures built on collaboration, inclusivity, and continuous learning.

Experience

Probo

Principal Engineer

Dec 2024Present · 1 yr 4 mos · Gurugram, Haryana, India · On-site

  • At Probo, I work as a Principal Engineer/Tech EIR — identifying high-impact, cross-functional, ambiguous problems, pitching solutions, and forming teams to drive them from idea to first launch.
  • Growth & Engagement
  • Designed and scaled a contest platform supporting 15K+ entries/min with leaderboard and rewards for 1M+ users, achieving P99 read latency <15ms.
  • Led product discovery and built a pipeline unifying customer lifecycle journeys, ingesting 50K+ events/sec for use-cases like recharge drop-offs and user activation.
  • Quality & Release
  • Introduced LLM-powered app regression testing (cut manual QA by >70%) and redeployed QA team members into higher-value roles across the org.
  • Coordinated with all Engg and Product leaders to align on outage mitigation strategies for IPL 2025 peak traffic days.
  • Data Security
  • Audited customer-data usage across 6 company functions; identified systemic privacy risks and proposed architectural/process controls for secure customer data access.
  • Developed a Kong plugin for a unified RBAC system with policy-as-code, enabling auditable, and organization-aware access control
  • Culture and Branding
  • Led Probo’s tech branding and L&D charter, hosting speaker-led sessions to share learnings from building scalable, high-impact systems internally and externally.
Software ArchitectureSoftware Development

Urban company

5 roles

Senior Engineering Manager, Matchmaking

Promoted

Jul 2023Nov 2024 · 1 yr 4 mos · On-site

  • Revamped a decade-old system by driving the technical roadmap, product discovery, high-level design, and domain modeling, ensuring timely delivery and seamless rollout; reduced operational configs from 200+ to under 5, and cut job-deficit payouts by 20%
  • Improved scalability and availability of legacy matchmaking, enabling record traffic with zero outages through system decoupling, asynchronous load-testing, mitigation playbooks, and computational optimizations.
High-Level DesignMentoringCode ReviewDomain ModelingSoftware ArchitectureProject Planning+2

Senior Engineering Manager, Partner Success + Quality + Fintech

Jan 2023Jul 2023 · 6 mos · On-site

  • Revamped the Partner journey system by making strategic decisions on database selection, enforcing idempotency, and designing asynchronous workflows; scaled to 2x journeys, reduced P95 latency from 500ms to under 50ms, and improved transparency for business and technical stakeholders.
  • Led multiple system health tracks including cleaning-up dependencies to improve availability during seasonal spikes, the right usage of a data computation framework across vertical, a new loans ecosystem architecture that improved availability, and so on.
High-Level DesignDistributed SystemsSoftware ArchitectureDesign ReviewPeople Management

Engineering Manager, Partner Success + Quality + Fintech

Aug 2021Dec 2022 · 1 yr 4 mos · On-site

  • Created the long-term tech vision document for the Partner Quality Engine, taking inputs from multiple Product, Engineering, and Business leaders. Then translated it into key tech capabilities that boosted NPS by +5pp across major businesses and improved partner ratings by +10pp.
  • Spearheaded a major non-functional initiative with the VP of Engineering, achieving a 5x improvement in API latencies through optimisations like precomputing heavy operations, caching, db indexing, purging old data, and so on.
High-Level DesignDistributed SystemsMentoringCode ReviewRedisApache Kafka+3

SDE 3, Partner Success + Quality

Promoted

Jun 2020Aug 2021 · 1 yr 2 mos · On-site

  • Developed a vaccination slot booking library based on geo-location, reducing booking time from ~1 min to <10 secs. Added one-click vaccination certificate downloads with PII data masking for security.
  • Worked directly with our CTO and VPs to design and develop the Partner Quality Engine, responsible for codifying quality definition, measurement, and interventions for our partner base. Coded core components for the quality engine (backend, web, and app).
High-Level DesignElasticsearchMySQLDistributed SystemsReact.jsReact Native+4

SDE 2, Partner Success

Oct 2018Jun 2020 · 1 yr 8 mos · On-site

  • Led the end-to-end discovery and implementation of the partner referral flow, managing product, design and engg responsibilities. Collaborated with cross-functional teams to ensure feature adoption across all of UC within 15 days, resulting in over 50% of new partner onboardings across UC businesses.
  • Developed an open source OCR-based data input flow in the partner app within a quarter, reducing ID capture time from 3 minutes to 2 seconds, increasing accuracy from 70% to 95%, and eliminating the need for manual inputs.
React.jsMentoringMongoDBSoftware DesignApache KafkaNode.js+1

The upskill club

Maintainer

Jan 2020Present · 6 yrs 3 mos · Remote · Remote

  • The Upskill Club is a collaborative learning community for professionals across career stages.
  • I contribute as a mentor and facilitator, leading tech series such as domain modeling, practical system design decisions, and AI for engineering–product–design teams.
MentoringSoftware DesignDomain Modeling

Greyorange pte ltd

2 roles

Software Developer, Butler MHS

Apr 2017Oct 2018 · 1 yr 6 mos · On-site

  • Worked in a two-engineer team to implement and deploy a new navigation algorithm, expanding the system’s capacity to support over 300 robots in large warehouses, overcoming the previous limitation of 80 robots.
  • Worked in a two-engineer team to develop emergency and safety features, including light-curtain, ensuring compliance with global security standards.
  • Solely responsible for implementing the new deadlock resolution system for robots, improving order throughput and reducing the need for manual intervention.
AlgorithmsFunctional ProgrammingErlangPython (Programming Language)

Software Developer, Butler UI

Jul 2016Mar 2017 · 8 mos · On-site

  • Led the development of back-end integration modules, response parsing, and error handling flows, providing a foundation for all front-end engineers to build upon.
  • Worked in a two-engineer team to implement manager dashboard displaying real-time warehouse operations data and enabling system-level operations for warehouse managers.
BootstrapReact.jsRedux

Cherryquill (discontinued in 2021)

Software Engineer Intern

Dec 2015Jan 2016 · 1 mo · New Delhi Area, India · Remote

  • Worked in a two-person engineering team to launch a product from scratch within two months.
  • Developed core pages end-to-end for both reader, writer and user pages including the UI and backend
  • Implemented email sign-up system to validate user accounts through registered emails.
  • Implemented a cron job to shuffle and refresh stories at regular intervals for dynamic content updates.
  • The platform had users from 25 countries with 200k+ monthly impressions.
PHPAlgorithmsHTML5MySQLCSS

Education

Netaji Subhas Institute of Technology

Bachelor of Engineering (BE) — Information Technology

Jan 2012Jan 2016

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