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// 06 / stack

stack

fundamentals

leetcode + codeforces1k+ problems solved

The DSA muscle behind the migrations, query-plan debugging, and protocol work below. Comfortable reaching for the right data structure before reaching for a framework.

languages

PythonPython
C++C++
RustRust
TypeScriptTypeScript
SQL
Rust-the GameTools Blaze SDK, sustaining ~15 MB/s of decoded EA wire traffic per region.
C++-main competitive-programming language across LeetCode + Codeforces; STL, algorithms, and low-level memory.
Python-the GameTools stats APIs (1M+ req / day) and the Simbian Django backend.
TypeScript-the GameTools frontends, the Simbian platform, the Wells Fargo doc platform, and this site.

frameworks / apis

FastAPIFastAPI
DjangoDjango
Pydantic
ReactReact
Next.jsNext.js
TanStack Query
Zustand
TokioTokio
gRPCgRPC
WebSocketsWebSockets
React / Next.js-the Simbian agent platform, GameTools, and the Wells Fargo document processing platform.
FastAPI-the GameTools stats gateway and worker pool serving 1M+ req / day.
Django-the Simbian backend: models, REST views, Auth and ORM
Tokio-async runtime behind the Blaze SDK
gRPC-wrote a no-proto packet parser. Also the tool-calling transport in the Simbian agent.
WebSockets-CloudLink at Simbian: a proxy into customers' internal integrations without exposing them publicly.

data / streaming

PostgreSQLPostgreSQL
ClickHouseClickHouse
Apache DorisApache Doris
RedisRedis
MongoDBMongoDB
Neo4jNeo4j
KafkaKafka
Debezium
PostgreSQL-database at Simbian; query and index optimisations reduced production CPU usage by 30% and critical-query p95/p99 latency by 20x.
Apache Doris-analytics database behind Simbian's self-service customer analytics platform. Upstream contributor: fixed quadratic JSON array traversal in json_search (apache/doris#69059).
Kafka / Debezium-CDC pipeline replicating Postgres changes into Apache Doris at Simbian.
Redis-GameTools hot cache and the queue fanning Blaze fetches across the worker pool.
Neo4j-knowledge-graph layer behind the Wells Fargo AI secondary-review workflow for stop-payment disputes, replacing manual QA.

ai / ml / agents

LangGraphLangGraph
StrandsStrands
LangfuseLangfuse
PyTorchPyTorch
TensorRTTensorRT
TritonTriton
Strands-Simbian's investigation agent harness
LangGraph-AI secondary review for stop-payment disputes and agentic extraction across 45K+ doc types at Wells Fargo.
Langfuse-previous LLM tracing stack for the Simbian agent, replaced with Doris-backed observability.
TensorRT / Triton-math-OCR inference at Solvio.AI; earlier real-time vision on Jetson.

cloud / devops

AWSAWS
EC2EC2
ECSECS
BedrockBedrock
GCPGCP
LinuxLinux
DockerDocker
KubernetesKubernetes
PgBouncerPgBouncer
AWS-EC2 + ECS across Solvio.AI and Simbian; Bedrock for managed models at Simbian.
GCP-production cloud for Solvio.AI's services and inference.
Linux-daily production debugging - logs, processes, networking, containers.
Kubernetes / Docker-containerized services across Simbian integrations and self-hosted projects.
PgBouncer-connection-pooling migration after diagnosing Postgres connection exhaustion under burst.

observability

OpenTelemetryOpenTelemetry
PrometheusPrometheus
GrafanaGrafana
OpenSearchOpenSearch
Elasticsearch
Prometheus + Grafana-metrics and dashboard for platform resources and apis
OpenTelemetry-traces and metrics across Simbian services
OpenSearch-Simbian log store; built the dashboards and alerting oncall runs on.
Elasticsearch-used at Wells Fargo.