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Expertise

Mainstream tools your own team can take over.

We pick technology for reliability, security and maintainability rather than novelty. These are the tools our senior engineers work with every day.

Tech stack

Blockchain & Web3

Smart contracts, tooling, standards and chains.

  • Solidity
  • Foundry
  • Hardhat
  • OpenZeppelin
  • ethers.js
  • viem
  • wagmi
  • The Graph
  • Chainlink oracles
  • EVM chains: Ethereum, Base, Arbitrum, Polygon, BNB Chain, Optimism
  • Token standards: ERC-20, ERC-721, ERC-1155, ERC-4626, ERC-2981
  • Account abstraction (ERC-4337)
  • Multisig wallets (Safe)
  • Security tooling: Slither, fuzzing, invariant testing
  • On-chain analytics & forensics

AI & Automation

Models, retrieval, agents, automation and quality.

  • Claude / Anthropic API
  • OpenAI API
  • Open-source LLMs
  • RAG & vector databases: pgvector, Pinecone, Qdrant
  • AI agents & tool use
  • Structured extraction
  • n8n
  • Make
  • LangGraph
  • Python (FastAPI)
  • Evals & guardrails
  • Prompt caching & cost optimisation

Web & Platforms

Frontend, backend, data and integrations.

  • Next.js
  • React
  • TypeScript
  • Node.js
  • NestJS
  • Python
  • PostgreSQL
  • Prisma
  • Redis
  • Tailwind CSS
  • Headless CMS: Sanity, Strapi, Payload
  • Stripe
  • i18n at scale
  • REST & GraphQL APIs
  • WebSockets & real-time

Cloud & DevOps

Hosting, delivery, observability and security.

  • Vercel
  • AWS
  • Docker
  • Kubernetes
  • Cloudflare
  • CI/CD (GitHub Actions)
  • Observability: Sentry, OpenTelemetry
  • Security best practice: OWASP, GDPR

Mobile

Cross-platform apps from one codebase.

  • React Native / Expo

How we choose technology

Proven where it matters

Proven, well-documented technology for the core of your system; newer tools only where they bring clear value.

Your team can take over

Mainstream stacks with good documentation, so your team or another vendor can maintain the code.

Security first

Audited libraries, pinned dependencies, automated checks and least-privilege infrastructure.

Quality standards

Included in every project.

Standard on client projects and on our own showcase work, never sold as an add-on.

  • Code review

    Every change is reviewed by a senior engineer before it ships.

  • Automated tests

    Unit, integration and end-to-end tests; fuzz and invariant tests for smart contracts.

  • Continuous integration

    Lint, type checks, tests and builds run on every commit.

  • Documentation

    Architecture notes, setup guides and handover documentation for your team.

  • Security review

    Threat modelling, dependency checks and OWASP-minded reviews; Slither for Solidity.

  • Full IP transfer

    You own the code, the infrastructure and the documentation on final payment.

  • Mutual NDA, ready to sign

    Download our mutual NDA on the contact page: confidentiality from the first conversation.

  • EU company

    Contracts and invoices via SANICURA d.o.o., Croatia, under EU contract law with reverse-charge invoicing.

  • GDPR by design

    Data minimisation, EU-friendly hosting options and clear data-processing agreements.

Reply within an hour

Every enquiry gets a personal reply from a senior engineer within an hour on working days.

Have a project in mind?

Tell us what you're building. A senior engineer replies within an hour on working days — then you get an honest assessment, a clear scope and a fixed-price or milestone proposal, usually within a few working days.

Start a projectBook a free call

Prefer to write first? Write to us

You'll talk directly with Ing. Ismet Mesic, Tech lead.