Open to new opportunities

Hi, I'm Vejsil Hrustic
I build things end to end.

Senior full-stack engineer with 10+ years building SaaS, fintech, healthcare, and AI-powered products, including work with Naga and Coinmetro. I work across the full JavaScript ecosystem (React, Next.js, Node.js, NestJS) and have shipped production AI systems: RAG pipelines, multi-LLM agentic workflows, and vector search with Qdrant. I like owning a feature end to end, from architecture through deployment.

View my workGet in touchView resume

Experience

Where I've worked

  1. Tryal

    2025 – 2026

    Senior Software Engineer

    • Built a multi-tenant SaaS platform helping CROs and biopharma companies automate key clinical study documents.
    • Architected an agentic document-generation pipeline across Anthropic, OpenAI, and Google, grounded in study-specific RAG to keep output traceable and hallucination-free.
    • Delivered a real-time collaborative rich-text editor (Lexical, later migrated to SuperDoc) with AI-assisted drafting.

  2. Coinmetro

    2023 – 2025

    Senior Software Engineer

    • Redesigned the company website using Next.js, improving page performance and organic search visibility.
    • Integrated Prismic CMS and built a responsive UI with Tailwind CSS and Shadcn UI for independent marketing control.

  3. Diagnosus

    2021 – 2023

    Senior Software Engineer

    • Implemented CI/CD pipelines with Cypress end-to-end and integration testing, reducing production bugs by 30%.
    • Built a reusable UI component library with Storybook, cutting development time by 20%.

  4. The NAGA Group AG

    2018 – 2021

    Software Engineer

    • Integrated multiple global payment providers, enabling expansion into new markets and contributing to 15% revenue growth.
    • Designed and developed Node.js APIs powering the NAGA Pay mobile banking platform.

  5. Swissqual (Rohde & Schwarz)

    2016 – 2018

    Software Engineer

    • Developed .NET backend services for a telecom data analytics platform.
    • Designed and implemented custom Angular-based visualization components for real-time network data.

Freelance projects

Things I've built on the side

ANDRE

01

Full-Stack Engineer

AI-powered survey analytics platform that turns raw survey data into actionable business insights in minutes, with automated data cleaning and imputation.

  • Up to 90% less manual analysis time
Next.jsFastAPIOpenAILangChain

Revi

02

Full-Stack Engineer

Agentic AI platform for private equity firms, automating M&A target sourcing, market research, and competitive intelligence at web scale.

  • Web-scale data ingestion & cleansing pipelines
Next.jsNestJSOpenAI Agents

FundSeeder

03

Full-Stack Engineer

Platform connecting undiscovered trading talent with institutional capital based on risk-adjusted performance.

Next.jsFlaskInteractive Brokers API

Stack

What I work with

AI / ML

OpenAIAnthropicGoogle GeminiLangChainLlamaIndexAgnoRAGAI AgentsQdrant

Languages & Frameworks

JavaScriptTypeScriptReactNext.jsNode.jsNestJSExpress.jsPythonFastAPIFlask.NETAngular

Data & Infrastructure

PostgreSQLMongoDBMySQLSQLiteAWSBullMQ

Frontend & UI

ReduxTailwind CSSMaterial UIShadcn/UILexicalSuperDoc

Payments & APIs

StripeREST APIsAuthenticationInteractive Brokers APISaaS Architecture

Testing & Tooling

CypressStorybookGitGitHubGitLabBitbucketCI/CD

Get in touch

Let's build something together.

Open to new opportunities · Sarajevo, Bosnia & Herzegovina

vejsilh@outlook.com
GitHubLinkedInResume

M.Sc. Computer Science, University of Sarajevo