01ML
Payment anti-fraud
- Task
- Stop fraudsters before the charge goes through.
- Approach
- Scores every transaction in real time.
- Stack
- PyTorchONNXGoClickHouse
- Result
- −70%fraud
Timofey · 4 years building software
manera
ML Engineer
Turning hard engineering problems into shipped systems.
- Production ML
- High-load backend
- Reverse engineering: binaries, protocols, closed APIs
manera@prod: ~
years of experience0since 2022
major projects0+
uptime0%
01/focus
Models, services
and binaries.
01 · ml
Machine Learning
From raw data to a model in production. I train, compress and deploy so it runs fast and stays up.
- CV, NLP, LLM + RAG
- ONNX / TensorRT, inference < 20 ms
- MLOps: metrics, drift, A/B
trainingepoch 0 · loss 2.310
02 · backend
Backend
APIs and services under load. I write Go and Python and design things to scale without rewrites.
- Highload: 12k RPS, p99 80 ms
- Kafka, Redis, PostgreSQL
- K8s, CI/CD, observability
service mapp99 80 ms
03 · reverse
Reverse Engineering
I take apart programs and protocols without source code to see how they work and where they break.
- Closed APIs and protocols
- Android / iOS, Frida, Ghidra
- Security audits, vulnerability research
disassemblydecoded: ________________
02/work
Projects
02Backend
billpay
- Task
- Recurring team payments in Telegram.
- Approach
- Reminders 3 days ahead, overdue tracking, RUB/USD/EUR.
- Stack
- PythonaiogramPostgreSQLRedis
- Result
- ×4fewer late payments
03ML
LLM support assistant
- Task
- Answer customers without loading the agents.
- Approach
- Answers on its own, hands hard cases to people.
- Stack
- LLMRAGpgvectorFastAPI
- Result
- 63%tickets with no agent
04Backend
API and infra monitoring
- Task
- See uptime, latency and alerts in one place.
- Approach
- One monitoring system for APIs and infrastructure.
- Stack
- GoPrometheusKafkaK8s
- Result
- 99.9%uptime
05Reverse
Mobile traffic analyzer
- Task
- Open up closed protocols of mobile apps.
- Approach
- Analyzer of mobile app traffic.
- Stack
- FridamitmproxyprotobufRust
- Result
- 12vulnerabilities
06Reverse
Firmware analysis
- Task
- Understand firmware with no source code.
- Approach
- Recovering logic, keys and protocols.
- Stack
- GhidraIDA ProPythonC
- Result
- 40+functions recovered
03/stack
machine learning
PyTorchTensorFlowscikit-learnHF TransformersONNX RuntimeCUDAOpenCVLangChainvLLMMLflow
backend
GoPython · FastAPINode.js · TSPostgreSQLRedisClickHouseKafkaRabbitMQgRPCDockerKubernetesNginxGrafana · Prometheus
reverse engineering
IDA ProGhidraBinary Ninjax64dbgFridaradare2WiresharkmitmproxyBurp SuiteC/C++ · ASM
04/experience