s
s1ngley

Vasyl T

@s1ngley
4.8(41)

Senior AI and web engineer

Ukraine
English, Ukrainian
About me
I help businesses automate complex tasks, understand their data, and build intelligent web platforms that work 24/7. Whether you need to automate a manual process or build a new AI-powered product, I handle everything from the "brain" (AI) to the "body" (the App).... Read more

Skills

s
s1ngley
Vasyl T
Offline • 
Average response time: 270 hours

See my services

AI Websites & Software
I will develop ai systems, data intesive apps

Portfolio

Work experience

myops

Senior Software Engineer

myops • Full-time

Oct 2026 - Present • 1 mo

I am working on AI Powered Real Estate CRM.

Intrepide

Lead Software AI Engineer

Intrepide • Full-time

Jan 2026 - Oct 2026 • 9 mos

▸ Lead a small engineering team building the backend of an AI agent platform (Python, FastAPI): own architecture decisions, technical roadmap, code review, and delivery. ▸ Design and ship production-grade agentic systems with LangGraph on top of Amazon Bedrock models: multi-agent orchestration, long-running multi-step workflows, tool use, and retrieval over enterprise knowledge bases. ▸ Build MCP connectors and servers that expose internal and third-party systems as tools for agents, and author MCP metadata schemas aligned with Canonical Contract definitions for consistent tool discovery. ▸ Designed the platform's agent and tool registry on top of the AWS agent registry: data models covering contracts, metadata, versioning, and lifecycle states (draft → active → deprecated → retired), with agent registration and discovery exposed via REST APIs with strict Pydantic validation. ▸ Develop data-intensive backend services and RAG pipelines (PostgreSQL / pgvector, Redis, vector stores) that power agent retrieval and context management. ▸ Own quality and safety of LLM systems: agent and LLM evaluation pipelines, regression testing across prompt and model changes, and LLM security (prompt-injection defense, guardrails, scoped tool access). ▸ Implement authentication and authorization (JWT, OAuth2, role-based access) for internal and external APIs. ▸ Set engineering standards for the team: API design conventions, testing, observability, and review process

DTEAM

Middle Python Developer

DTEAM • Full-time

Feb 2025 - Dec 2025 • 10 mos

Developed data-intensive backend services and REST APIs for client projects, handling large datasets with PostgreSQL and Redis-backed caching and background processing. ▸ Built AI agents and LLM-powered features with LangChain/LangGraph, including RAG systems with retrieval pipelines, vector stores, and knowledge bases. ▸ Designed and ran LLM regression test suites to catch quality drift across prompt, model, and pipeline changes. ▸ Performed LLM security work: prompt-injection and jailbreak testing, input/output guardrails, and hardening of agent tool access. ▸ Wrote automated tests and API documentation; participated in code reviews and sprint planning

41 Reviews
4.8

(38)
(1)
(1)
(0)
(1)
Rating Breakdown
  • Seller communication level
    4.8
  • Quality of delivery
    4.8
  • Value of delivery
    4.9
1-5 out of 41 Reviews
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    K

    kingcwgl

    DE

    Germany

    5

    Very nice guy and a very good Coach!

    $50

    Price

    7 days

    Duration

    Helpful?
    Yes
    No
    A

    amopoco

    FR

    France

    5

    Thank you very much

    $50-$100

    Price

    1 day

    Duration

    Helpful?
    Yes
    No
    J

    jozpeha

    GB

    United Kingdom

    5

    If you're looking for a CS2 coach this is your guy the knowledge and level of tips is insane, even if you think you are playing good he will breakdown the small things that your missing to make your game play so much better. 5 stars coach.

    $50

    Price

    5 days

    Duration

    Helpful?
    Yes
    No
    T
    image-docs

    tailorg

    DE

    Germany

    5

    Thank you!!!

    $50

    Price

    1 day

    Duration

    Helpful?
    Yes
    No
    M
    image-docs

    marrlemullin

    GB

    United Kingdom

    1

    I would not recommend this coach. He has very bad coaching methods.

    $50

    Price

    7 days

    Duration

    Helpful?
    Yes
    No