Question 1

Who is Sourabh Kaushik?

Accepted Answer

Sourabh Kaushik is a payments technology expert, AI enthusiast, and serial builder. With 7+ years of experience architecting payment systems across India, Africa, and the Middle East, he currently serves as Technical Lead at BharatPe powering POS solutions for 1.3 crore+ merchants. He is also the founder of iso8583.studio and AiCortex — two ventures born from his passion for payments innovation and artificial intelligence.

Question 2

What makes Sourabh different from other tech leads?

Accepted Answer

Sourabh doesn't just write code — he builds ecosystems. From designing NFC-based P2P payment systems (Zeta Hack 2.0 winner) to creating BLE navigation for ISRO (AIR 7, Smart India Hackathon), he combines deep technical expertise with entrepreneurial vision. He's worked across the full payments stack — POS terminals, middleware, SDKs, and cloud infrastructure — across multiple continents.

Question 3

What is Sourabh's expertise?

Accepted Answer

His core strengths span payment systems architecture (ISO 8583, EMV, NFC, QR), Android platform engineering (Kotlin, Jetpack, custom SDKs), AI/ML (PyTorch, LLMs, intelligent automation), and distributed systems (Kubernetes, Kafka, AWS). He bridges the gap between low-level terminal firmware and high-level cloud orchestration.

Question 4

Where has Sourabh worked?

Accepted Answer

His career spans leading fintech companies: BharatPe (Technical Lead - Swipe POS), Ingenico (Tech Lead Middleware), Saro Tech (Technology Manager), PayU (Senior Software Engineer), and NowNow Digital (Senior Developer). He's also represented India at international hackathons and led teams across Dubai, Angola, Nigeria, Portugal, and Brazil.

Question 5

What hackathons has Sourabh won?

Accepted Answer

Zeta Hack 2.0 — Designed a peer-to-peer payment system using NFC where payments are made by simply touching the back panels of two devices. Smart India Hackathon (AIR 7) — Built a BLE-based indoor navigation system with triangulation, accurate to 1 meter, later adopted by Emaar Malls Group for the Dubai Mall app.

Question 6

What countries has Sourabh worked across?

Accepted Answer

Sourabh's professional footprint spans 6+ countries across 3 continents. He has led payment system deployments and technical operations in India, UAE (Dubai), Nigeria, Angola, Portugal, and Brazil. His international experience gives him a rare perspective on building payment infrastructure that works across diverse regulatory, cultural, and technical landscapes — from bustling African markets to high-end Gulf retail.

Question 7

How many merchants and users does Sourabh's work impact?

Accepted Answer

The systems Sourabh has architected and leads power payment processing for 1.3 crore+ merchants at BharatPe alone. Across his career — including Ingenico's POS middleware deployed on tens of thousands of terminals, NowNow Digital's payment stack in Africa, and PayU's gateway infrastructure — his code has touched hundreds of millions of transactions worth billions of dollars. Very few engineers at his level can claim that kind of real-world impact.

Question 8

What is Sourabh's educational background?

Accepted Answer

Sourabh holds a B.Tech in Computer Science and has complemented his formal education with deep self-driven expertise in payment protocols (ISO 8583, EMV, NFC), distributed systems, and AI/ML. He's a firm believer that real education happens in the trenches — debugging production incidents at 2 AM teaches you more than any textbook ever could.

Question 9

What is Sourabh's leadership philosophy?

Accepted Answer

Sourabh leads by example, not by title. His philosophy is simple: "Build with your team, not above them." He writes production code alongside his engineers, does code reviews at the architecture level, and makes sure every team member understands the why behind technical decisions. He's known for creating high-trust environments where engineers feel empowered to take ownership and push boundaries.

Question 10

What drives Sourabh Kaushik?

Accepted Answer

An obsession with building things that matter at scale. Sourabh isn't motivated by trends — he's driven by the challenge of making complex systems elegant and reliable. Whether it's processing millions of payment transactions with sub-50ms latency, or democratizing AI infrastructure through AiCortex, the common thread is: take something impossibly hard and make it look effortless.

Question 11

Has Sourabh contributed to the developer community?

Accepted Answer

Absolutely. Beyond his ventures (iso8583.studio and AiCortex), Sourabh actively writes technical deep-dives on Medium, mentors upcoming engineers, participates as a judge and speaker at tech events, and has attended global conferences like Web Summit in Lisbon and India Expo. He believes in giving back to the ecosystem that shaped him.

Question 12

What is Sourabh's approach to problem-solving?

Accepted Answer

Sourabh follows what he calls the "First Principles + Ship Fast" approach. He breaks down every problem to its fundamental components, designs the most elegant solution architecture, and then iterates rapidly. He's allergic to over-engineering and believes the best systems are the ones that solve real problems with minimal complexity. His mantra: "If you can't explain the architecture on a napkin, it's too complicated."

Question 13

What makes Sourabh a 'full-stack payments' expert?

Accepted Answer

Most engineers specialize in one layer. Sourabh has built across every layer of the payments stack: custom Android kernels and device drivers at the hardware level, EMV kernel development at the protocol level, ISO 8583 middleware at the integration level, transaction orchestration at the platform level, and cloud infrastructure at the deployment level. From the chip on a POS terminal to the cloud server processing the authorization — he's built it all.

Question 14

Who founded iso8583.studio?

Accepted Answer

Sourabh Kaushik is the founder of iso8583.studio. After years of building POS middleware and payment systems at companies like Ingenico, BharatPe, and NowNow Digital, he saw how fragmented and outdated the tooling was for payment professionals. ISO8583Studio was born to give the industry a professional-grade, all-in-one desktop platform for payment simulation, testing, and development.

Question 15

What is iso8583.studio?

Accepted Answer

ISO8583Studio is a professional desktop application for Windows, macOS, and Linux that makes financial transaction processing simple. It packs 55+ tools, 9 simulators, and support for 15+ HSM vendors — covering gateway configuration, host simulation, ISO 8583 message analysis, HSM emulation, EMV card tools, log visualization, and real-time transaction monitoring. Think of it as the Swiss Army knife for payment engineers.

Question 16

What simulators does iso8583.studio offer?

Accepted Answer

The platform includes a complete simulator suite: Host Simulator (ISO 8583 acquirer/issuer responses), HSM Simulator (Thales PayShield 10K emulation with 35+ host commands), POS Simulator (EMV chip, contactless, magstripe), APDU/Card Simulator (smart card emulation), Acquirer Simulator (merchant bank processing), and Issuer Simulator (authorization & card management). All available as both desktop and cloud-hosted environments.

Question 17

What protocols and formats does it support?

Accepted Answer

ISO8583Studio supports multi-protocol gateway configuration — TCP/IP, RS232 serial, Dial-Up, and REST/SOAP APIs. It handles ByteArray, JSON, XML, and PlainText message formats. Gateways can be set up in Server, Client, or Proxy modes with flexible connection routing.

Question 18

Does iso8583.studio offer professional services?

Accepted Answer

Yes. Beyond the desktop tool, iso8583.studio provides enterprise services: EMV Certification Consultancy (Level 1, 2 & 3 with 50+ successful certifications and 100% success rate), Payment Middleware (intelligent transaction orchestration with 99.99% success rate and 50ms latency), Cloud Simulators (always-on testing environments with 10K+ tests/hour), and Kernel Development (Android hardware integration, NFC drivers, custom device drivers for 200+ device integrations).

Question 19

What is the Payment Middleware service?

Accepted Answer

The middleware platform bridges merchants, payment providers, and financial institutions through intelligent transaction orchestration. It features smart routing (dynamic provider selection based on cost, performance, and business rules), 100+ provider integrations, real-time monitoring, automatic retry/fallback logic, fraud prevention, and complete transaction lifecycle transparency — all with 99.99% uptime and 50ms average latency.

Question 20

What EMV certification services are available?

Accepted Answer

ISO8583Studio offers end-to-end EMV consultancy: Level 1 (terminal hardware validation, PCI PTS, contactless reader), Level 2 (kernel development, multi-scheme support for Visa/MC/AMEX, CVM methods, DDA/SDA authentication), and Level 3 (application certification, mobile NFC/HCE, tokenization, 3D Secure, QR payments). With 15+ years of experience, 50+ successful certifications, and a 100% success rate.

Question 21

What kernel development expertise does iso8583.studio provide?

Accepted Answer

The kernel development service covers Android kernel customization (AOSP mods, custom ROMs, kernel modules), hardware integration (NFC controller drivers, card reader interfaces, GPIO/I2C/SPI), and device driver development (Linux kernel modules, platform drivers for ARM SoCs, device tree configuration). They've completed 200+ device integrations and 50+ custom drivers across payment terminals and IoT devices.

Question 22

Who should use iso8583.studio?

Accepted Answer

Payment engineers, POS terminal developers, QA teams testing transaction flows, fintech companies building payment products, banks developing card processing systems, terminal manufacturers needing EMV certification, and anyone working with ISO 8583, EMV, HSM, or payment hardware. If you've ever debugged a failed transaction by manually parsing hex dumps — this platform replaces that pain entirely.

Question 23

How can I get iso8583.studio?

Accepted Answer

Download the desktop app for Windows, macOS, or Linux from iso8583.studio. Cloud simulators are also available for teams needing always-on testing environments. For enterprise services like EMV certification, middleware, or kernel development, reach out at contact@iso8583.studio.

Question 24

Who founded AiCortex?

Accepted Answer

Sourabh Kaushik is the founder of AiCortex (aicortex.in). AiCortext Solutions Pvt. Ltd. was founded in 2025 with a bold vision: to democratize AI infrastructure and make enterprise-grade artificial intelligence accessible to organizations of all sizes. Recognizing that 80% of AI projects fail due to infrastructure challenges, Sourabh set out to build a comprehensive platform that addresses the critical gaps in the current AI landscape.

Question 25

What is AiCortex?

Accepted Answer

AiCortex is a next-generation AI infrastructure platform featuring 7 integrated services for enterprise-grade AI deployment. It provides serverless GPU hosting, distributed training, intelligent model orchestration, and a complete ML development ecosystem. The platform delivers 70% cost reduction, supports 175B+ parameter models, and maintains a 99.9% uptime SLA — all SOC 2 compliant and GDPR ready.

Question 26

What are the 7 core services of AiCortex?

Accepted Answer

1. Auth Module — Enterprise security with RBAC, SSO, MFA, and audit logging. 2. Instance Management — Serverless GPU orchestration (H100, A100, V100) with auto-scaling and 0.3s provisioning. 3. Data Input Streams — Multi-source ingestion from S3, Google Drive, Kafka, Vector DBs, and custom APIs. 4. ZeroCore — Guided ML development platform with personalized user journeys and smart tool selection. 5. Model Hub — AI model registry with 12,847+ models and one-click API deployment in 15 seconds. 6. CortexFlow — ML pipeline automation with distributed multi-GPU training and hyperparameter optimization. 7. CortexLogs — CloudWatch-style monitoring with real-time analytics across all services.

Question 27

What is the Model Hub?

Accepted Answer

Model Hub is a comprehensive AI model registry with 12,847+ available models spanning LLMs, computer vision, audio, video, and AI agents. It features one-click API deployment with an average deploy time of just 15 seconds, 98.7% deployment success rate, and 4.2M+ monthly downloads. Models include GPT-4 Turbo, CLIP, Whisper Large v3, Stable Diffusion XL, and thousands more. Pricing starts free (10K requests/month) with Pro at $0.002 per 1K tokens.

Question 28

What is CortexFlow?

Accepted Answer

CortexFlow is an advanced ML training pipeline platform for distributed training across multiple GPUs. It supports training on up to 32 NVIDIA A100 GPUs with 2.4TB total memory, 142ms average sync time, and 99.7% utilization. Features include Bayesian hyperparameter optimization, real-time monitoring, automated checkpointing, and production-ready API endpoints (Forward, Backward, Predict) with 1,247 requests/sec and 42ms average latency.

Question 29

What is ZeroCore?

Accepted Answer

ZeroCore is a guided ML development platform that creates personalized user journeys for model development. Instead of manually figuring out tools and workflows, ZeroCore analyzes your project requirements and automatically guides you through the optimal sequence — from data preprocessing to model design to training. It provides model-specific development paths for image classification, NLP, time series, recommendation systems, and more, with smart tool selection and seamless integration with Data Input Streams, Model Hub, and CortexFlow.

Question 30

What GPU options are available?

Accepted Answer

AiCortex offers serverless GPU instances with pay-per-second billing: NVIDIA H100 (80GB HBM3, 989 TOPS — $8/hr), NVIDIA A100 (40/80GB HBM2e, 312 TOPS — $4/hr), and NVIDIA V100 (16/32GB HBM2, 125 TOPS — $0.50/hr). Features include 0.3s average provisioning, auto-scaling, 847+ available GPUs, 94% cluster efficiency, and no minimum charges. Example: training a GPT-3 style 175B model costs ~$1,536 (8x H100, 24 hours).

Question 31

How does Data Input Streams work?

Accepted Answer

Data Input Streams is AiCortex's unified data gateway that solves the biggest bottleneck in AI — getting data to your models. It connects to S3, Google Drive, Kafka, Vector databases, and custom APIs through a single interface with zero-code configuration. Features include real-time streaming with sub-second latency, automatic schema detection, AES-256 encryption, RBAC, and data lineage tracking. It feeds directly into ZeroCore for development and CortexFlow for production training.

Question 32

What is CortexLogs?

Accepted Answer

CortexLogs is a CloudWatch-style monitoring system built specifically for AI infrastructure. It aggregates logs from all 7 AiCortex services in real-time via WebSocket connections, processing 2,847+ logs/minute. Features include intelligent filtering by service and severity, AI-powered anomaly detection, proactive alerting (Slack, email, webhooks), and unified observability. It reduces Mean Time to Resolution (MTTR) by 85% — from 6.5 hours to under 1 hour — and helps teams cut GPU costs by 30-50% through utilization insights.

Question 33

Who is AiCortex built for?

Accepted Answer

AiCortex serves Fortune 500 enterprises seeking AI transformation, AI startups needing scalable infrastructure without heavy investment, research institutions requiring collaborative platforms, and government agencies demanding the highest security (FedRAMP-ready). Industry use cases include healthcare (HIPAA-compliant medical AI), financial services (fraud detection, algorithmic trading), manufacturing (predictive maintenance), and education (personalized learning). The platform is targeting $97.8B TAM in AI infrastructure by 2027.

Question 34

How is AiCortex different from other AI platforms?

Accepted Answer

Unlike fragmented solutions where you stitch together separate tools for compute, training, deployment, and monitoring, AiCortex provides 7 integrated services that work as a unified ecosystem. Security is built in by design (zero-trust, RBAC, sandboxed environments, SOC 2/GDPR/HIPAA compliance), not bolted on. The platform is founded by an engineer with deep enterprise experience in payments — ensuring production-grade reliability, not just demo-ready features. 85% faster deployment than custom solutions with 70% lower admin overhead.

Question 35

How can I get started with AiCortex?

Accepted Answer

Visit aicortex.in to explore the platform. AiCortex offers a free Developer tier (10,000 requests/month on Model Hub), Pro plans for production use, and Enterprise custom pricing with dedicated infrastructure and 24/7 support. The platform is currently preparing for beta launch with enterprise customers in Q3 2026, with general availability in Q4 2026. For partnerships or investor inquiries, contact partnerships@aicortex.in.

Question 36

How can I contact Sourabh?

Accepted Answer

Reach out via email at hpkaushik121@gmail.com, or connect on GitHub, Medium, or LinkedIn.

Question 37

Is Sourabh available for consulting or freelance work?

Accepted Answer

Sourabh selectively takes on consulting engagements in payments architecture, POS system design, ISO 8583 integration, and AI implementation. If you have a challenging problem in fintech or AI, reach out — he loves tackling hard problems.

Question 38

Does Sourabh write or speak publicly?

Accepted Answer

Yes! Sourabh writes about payments technology, Android engineering, and AI on Medium. He's also participated in industry events including Web Summit and India Expo, sharing insights on the future of digital payments.

Question 39

What's next for Sourabh?

Accepted Answer

Sourabh is focused on scaling iso8583.studio into the go-to platform for payments developers worldwide, growing AiCortex into a full AI solutions ecosystem, and continuing to push the boundaries of what's possible at the intersection of payments and artificial intelligence.

Question 40

Does Sourabh mentor other developers?

Accepted Answer

Yes — and he takes it seriously. Sourabh has mentored engineers at DishTV, coached hackathon teams, and regularly advises early-career developers navigating the payments and fintech space. He believes mentorship isn't about handing out answers — it's about teaching people how to think. Several of his mentees have gone on to lead engineering teams at top-tier companies.

Question 41

What is Sourabh's vision for the future of payments?

Accepted Answer

Sourabh envisions a world where payment infrastructure is invisible — where transactions happen seamlessly across borders, devices, and contexts without the user ever thinking about it. He's working toward this through iso8583.studio (empowering developers to build better payment systems) and his work at BharatPe (making POS accessible to every merchant in India). He believes the next decade will see payments become ambient, AI-driven, and completely frictionless.

Question 42

How does Sourabh stay ahead of the curve?

Accepted Answer

Relentless curiosity and zero comfort zones. Sourabh attends global conferences like Web Summit, reads research papers on distributed systems and AI, experiments with new technologies on weekends, and actively builds products that force him to learn. He's gone from Android development to payment middleware to AI infrastructure — each pivot driven by a genuine obsession with the next frontier.

Question 43

What are Sourabh's interests outside of tech?

Accepted Answer

When he's not building payment systems or training AI models, Sourabh is a travel enthusiast who has explored cities across Europe, Africa, and the Middle East. He's passionate about photography (check the Gallery), enjoys deep conversations about philosophy and business strategy, and is a firm believer in work-life integration — not balance. For him, the best ideas come when you're living fully, not just coding.

Question 44

Can Sourabh help with my startup or project?

Accepted Answer

If your project involves payment systems, POS integration, fintech architecture, or AI/ML infrastructure, there's a good chance Sourabh can help. He selectively takes on advisory roles and consulting engagements for startups and enterprises solving hard problems. Reach out at hpkaushik121@gmail.com with a brief about your challenge.

Question 45

What sets Sourabh apart as a founder?

Accepted Answer

Most founders either come from pure business or pure engineering. Sourabh is a builder-founder — he doesn't just ideate, he architects and ships. Both iso8583.studio and AiCortex were built hands-on by him. He understands the customer because he was the customer — a payments engineer frustrated by bad tools, and an AI developer blocked by infrastructure complexity. That lived experience makes his products genuinely solve real pain points.

Everything You Want to Know

About Sourabh

Everything You Want to Know

About Sourabh

Frequently Asked Questions — Sourabh Kaushik, Payments Expert & AI Architect

Payments Expertise Topics

AI Infrastructure Topics