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QUANT DEVELOPER · DATA ENGINEER

Distributed systems. Market data. Production AI.

I build the systems where correctness is non-negotiable — event-driven billing infrastructure and production AI pipelines at Acefone, Kafka and Python and C++ under the hood. Now going deeper into market microstructure and low-latency systems.

1M+ txns/day 10K events/sec exactly-once accounting
SIM-EXCHANGE/BTC-PERP
09:31:58.412
104,232.2
104,235.02.30
104,234.56.00
104,234.01.40
104,233.55.10
104,233.03.20
SPREAD 1.5
104,231.52.70
104,231.04.40
104,230.51.10
104,230.05.60
104,229.53.00
TRADE TAPE
09:31:58.2BUY0.42@104,233.5
09:31:57.4SELL1.10@104,230.0
09:31:56.9BUY0.08@104,233.5
09:31:55.1SELL0.63@104,230.0
MID104,232.2 +0.00% LIVE SIMPRICE-TIME
$ whoami
jatin.bishla
$ cat role.txt
SDE @ Acefone — distributed billing infra,
production AI systems
$ cat focus.txt
> low-latency C++ / market microstructure
> kafka, exactly-once, event-driven design
> llm + stt pipelines at production scale
$ uptime
2+ years in production engineering
2 +
Yrs · Production Eng
3
Prod Systems Shipped
C++/PY/KAFKA
Core
INDIA / EMEA
Open to Relocate
currently building: lob-engine — C++20 limit order book, integer-tick, deterministic replay

About

I'm a software engineer at Acefone in Gurugram, where I build the systems that move money and meaning: a billing and reconciliation engine handling 1M+ transactions a day with exactly-once accounting, Kafka streams at 10K events/sec, and a production AI system that turns daily call recordings into structured, configurable insight.

My background is Electronics & Communication Engineering (MAIT, GGSIPU), and my trajectory is deliberate: deeper into quantitative systems — C++ performance work, market microstructure, the data infrastructure that trading runs on. I practise competitive programming daily and build market-structure projects like a limit order book matching engine to ground the theory in working code.

I'm interested in quant developer and data engineering roles where correctness, throughput and latency all matter at once.

"Correct first. Fast second. Both, eventually."

AWS Certified Cloud Practitioner · Google Hash Code 2021

Selected Work

Systems in production. Systems in progress.

Limit Order Book Matching Engine

In Progress

C++ ·Price-Time Priority ·Market Microstructure

A single-threaded limit order book in modern C++ with price-time priority matching — limit/market orders, cancels, modifies. Prices are integer ticks (no floating point on the hot path), every event carries a sequence number for deterministic replay, and the data structures are laid out cache-consciously. The simulation in this page’s hero is a browser-side sketch of the same mechanics.

Customer Analytics & Insights Engine

Complete

Python ·SQL ·Pandas ·NumPy ·Matplotlib

An analytics engine over 5+ years of customer financial data: computes health and risk metrics per account and generates automated benchmark reports. Vectorised Pandas/NumPy pipeline end to end — built as a research and reporting tool, not a dashboard.

Capabilities

Stack.

Languages & Core

  • C++ (17/20)
  • Python (production)
  • SQL
  • Bash
  • Data structures & algorithms
  • OOP & concurrency
  • Linux · Git

Data & Event Systems

  • Apache Kafka
  • Low-latency event-driven architecture
  • Exactly-once processing
  • Deterministic replay
  • Backpressure handling
  • p99 latency tuning
  • Airflow · NumPy · Pandas · Matplotlib

Cloud & AI Systems

  • AWS Lambda · SNS · SQS · CloudWatch
  • Redshift query tuning
  • Docker · CI/CD
  • STT pipelines
  • LLM API integration
  • Dynamic prompt composition
  • Parquet streaming export
Certifications & contests
AWS Certified Cloud PractitionerMachine Learning with PythonGoogle Hash Code 2021

Trajectory

Experience.

Sep 2024 — Present

Software Development Engineer · Acefone, Gurugram

Distributed data & AI systems

Billing & reconciliation engine processing 1M+ transactions/day with exactly-once semantics — Kafka at 10K events/sec across 10 partitions with backpressure handling, deterministic replay orchestration, and streaming Parquet export. Built and shipped XTRACT, a production STT + LLM post-conversation analysis engine over 1M+ daily events.

KafkaPythonExactly-OnceLLMSTT
Feb — Jul 2024

Software Engineering Intern · The DataFlow Group, Noida

Data engineering & cloud automation

Built real-time alerting on AWS Lambda + SNS, cutting manual intervention by 40%. Ran Airflow ETL pipelines moving 100K+ records/day, tuned Redshift queries (~15% faster), and stood up CloudWatch dashboards for pipeline observability.

AWS LambdaSNSAirflowRedshiftCloudWatch
2022

AI/ML Head · Aerostars Technical Drone Society, MAIT

University drone society

Led AI/ML for a 25+ member drone society team — computer vision for autonomous flight-path correction.

PythonComputer Vision
2020 — 2024

B.Tech, Electronics & Communication Engineering

MAIT (GGSIPU), New Delhi · CGPA 8.49/10

Signal processing and embedded systems foundation; moved into software engineering in final year.

Contact

Let's talk systems.

Open to quant developer and data engineering conversations. Based in Gurugram, India.

Open to relocation across India & EMEA

~/contact — mail.compose

Composes an email to bishlajatin@gmail.com — no data leaves your device.