Core Ecosystem
TypeScript / Node.js
My main current platform for APIs with NestJS and Express, interfaces with Next.js and Astro, and processing workers.
Go
Used for highly concurrent workers, web intelligence and efficient low-memory scraping systems.
Python
The practical language for AI integrations, LangChain orchestration, data pipelines and vector ingestion for RAG.
Complete stack matrix
This matrix keeps the stack honest: languages, frameworks, cloud, data, security, AI and technical leadership are shown with level, approximate years and production context. It includes both current systems and older technologies that still matter when evaluating seniority.
ExpertTechnical owner in production.AdvancedHands-on in production with critical scope.WorkingComfortable in production.ExposureReal work, limited scope.
Backend & languages
14Node.jsExpert
- Bitcapital/Ame
- Ingresse
- CRM&BONUS
- Hypetech
TypeScriptExpert
- CRM&BONUS
- Hypetech
NestJSExpert
- Bitcapital/Ame
- Ingresse
- CRM&BONUS
- Hypetech
- Freelance AI systems
GoAdvanced
- Freelance AI systems
- internal tooling
PythonAdvanced
- CRM&BONUS BI
- Hypetech BI
- Freelance AI systems
C# / .NETExpert
- Autoweb
- Agence
- LG/Norber
C++Working
- systems programming
- performance studies
Rust / ZigWorking
- systems programming
- runtime/tooling studies
JavaWorking
- IBM
- Agence (legacy support)
PHPWorking
- UOL
- CRM&BONUS legacy
- Ingresse legacy
ElixirExposure
- Ingresse payments stack
REST APIsExpert
- all senior roles
GraphQLAdvanced
- CRM&BONUS
gRPCWorking
- CRM&BONUS internal services
Frontend & mobile
6Next.jsExpert
- Ingresse
- CRM&BONUS
- Hypetech
ReactExpert
- Bitcapital/Ame
- CRM&BONUS
- Hypetech
React NativeAdvanced
- CRM&BONUS
AstroAdvanced
- this site
AngularJS / AngularWorking
- Agence
- Ingresse legacy
HTML / CSS / a11yExpert
- all roles
Infra, cloud & platform
13AWS (EKS, EC2, RDS, ASG, ALB, S3, ECR, API Gateway)Expert
- Agence
- Ingresse
- CRM&BONUS
- Hypetech
KubernetesExpert
- Bitcapital/Ame
- CRM&BONUS
- Hypetech
Argo CD / GitOpsAdvanced
- Hypetech
Cloudflare WAF / TunnelAdvanced
- Hypetech
GCPWorking
- Bitcapital/Ame
AzureWorking
- LG/Norber
Linux / Bash / shellExpert
- since the very beginning
Terraform / IaCAdvanced
- CRM&BONUS
- Hypetech
DockerExpert
- all senior roles
CI/CD (GitHub Actions, GitLab CI)Expert
- LG/Norber
- CRM&BONUS
- Hypetech
RabbitMQExpert
- Autoweb
- Agence
- LG/Norber
- Bitcapital/Ame
- Ingresse
- CRM&BONUS
- Hypetech
Temporal.ioAdvanced
- CRM&BONUS
- Hypetech
RedisExpert
- Autoweb
- Agence
- Ingresse
- CRM&BONUS
- Hypetech
Data & persistence
8PostgreSQLExpert
- Bitcapital/Ame
- Ingresse
- CRM&BONUS
- Hypetech
MySQLAdvanced
- UOL
- CRM&BONUS legacy
SQL ServerAdvanced
- Autoweb
- Agence
- LG/Norber
OracleWorking
- IBM
pgvectorAdvanced
- Freelance AI systems
Parquet / DuckDBAdvanced
- CRM&BONUS BI
- Hypetech BI
Stellar NetworkAdvanced
- Bitcapital/Ame
- Hypetech ledger
Read replicas / pooling / shardingExpert
- LG/Norber
- Ingresse
- CRM&BONUS
- Hypetech
Security & reliability
6Platform hardeningExpert
- LG/Norber
- Bitcapital/Ame
- Ingresse
- Hypetech
Pentest coordinationAdvanced
- LG/Norber
- Bitcapital/Ame
- CRM&BONUS
- Hypetech
Secrets / access leak cleanupAdvanced
- CRM&BONUS
- Hypetech
KYC / 3DS / regulated flowsAdvanced
- Bitcapital/Ame
Antifraud (live ticketing)Advanced
- Ingresse
WAF policy / API gateway controlsExpert
- LG/Norber
- Bitcapital/Ame
- Ingresse
- Hypetech
AI agents & LLMs
8OpenAI SDKExpert
- CRM&BONUS
- Freelance AI systems
OpenRouterAdvanced
- Freelance AI systems
LangChainAdvanced
- Freelance AI systems
Model Context Protocol (MCP)Advanced
- Hypetech admin workflows
- Freelance AI systems
RAG (PostgreSQL + pgvector)Advanced
- Freelance AI systems
Llama 2 / on-prem agentsAdvanced
- CRM&BONUS
Agent tool use & permission boundariesAdvanced
- Freelance AI systems
- Hypetech
Vector memory / `.md` knowledgeAdvanced
- Freelance AI systems
Leadership & engineering management
5Tech LeadExpert
- Autoweb
- Agence
- LG/Norber
- Hypetech
Hands-on Head of EngineeringAdvanced
- CRM&BONUS (~120 devs)
Hands-on CTO / Tech LeadAdvanced
- Ingresse
Mentoring / hiring / standardsExpert
- all senior roles
Cross-functional partnership (product/design/BI/security)Expert
- LG/Norber
- CRM&BONUS
- Hypetech
Cloud, Infrastructure and Data
- Kubernetes (AWS EKS, GCP GKE): orchestration, self-healing and GitOps with Argo CD.
- Relational databases (PostgreSQL): deep tuning, tenant-level isolation and pgvector for AI.
- Messaging (RabbitMQ, Kafka): asynchronous processing guarantees for critical missions and financial systems.
- Distributed orchestration (Temporal.io): resilient workflows for long-running processes without fear of failure.
AI Agentic Engineering
Building secure autonomous agents that leave the terminal and affect real systems:
- Model Context Protocol (MCP): a standard architecture for isolating LLMs from core systems.
- RAG (Retrieval-Augmented Generation): structured vector databases to reduce corporate hallucinations.
- Human-in-the-loop: system-level interruption for manual approval in irreversible workflows.
Focused engineering conversation
Contact via LinkedIn only. No email, phone or WhatsApp.