GRASPFullstackApplication / Alex Kostyniuk

I build product across the full stack, TypeScript end to end, and I already work the way Grasp expects: AI coding tools pushed to their limit, with judgment, tests, and review holding the bar.

Software Engineer · Fullstack · Stockholm

Alex Kostyniuk

Why we're a strong match

The posting asks for

All eight covered

  • TypeScript and React

    My daily stack, end to end

  • Track record of quality systems

    Years of production systems, built and maintained

  • System design, databases, performance

    Node, PostgreSQL, and real optimization wins

  • Cloud infrastructure and deployment

    AWS in production; GCP is a fast transfer

  • AI coding tools, maximized

    My default way of working, not an experiment

  • Next.js

    Daily, and I write articles about modern Next.js

  • OpenSearch

    Hands-on with Elasticsearch, its origin

  • Terraform

    Worked with it, though not daily

Why Grasp should hire me

Generalist by design
Data pipeline, API, or UI: I follow the problem wherever it goes. React and TypeScript in front, Node and PostgreSQL behind, and I own features from definition to instrumentation.
AI tools at full throttle
You offer unlimited Claude Code, Codex, and Cursor spend and expect it used. I introduced agentic workflows at my current company and build with them daily.
Performance instinct
I turned a ten-minute core workflow into a twenty-second one by challenging the architecture, not merely tuning it. Research automation lives or dies on wins like that.
Product instinct
I start from the customer problem, not the ticket. I work with design to find the right feature, then ship the smallest version that proves it.
Modern Next.js, in depth
Daily App Router work, close enough to write articles about server components and the rendering trade-offs behind them. Your plus is my default.
Self-directed, with urgency
I scope my own work, unblock myself, and ship at startup pace, with types, tests, and review keeping the bar up while the week's output grows.

Why I want to join Grasp

Agentic AI with real stakes
Automating research for the largest financial institutions is frontier AI with a paying customer, not a demo. 250 of the biggest firms and 4x growth say the market agrees.
Close to the decisions
A core team where I work directly with the Head of Engineering and CPO, and customer feedback reaches me the same week it is given.
Stockholm, in person
I am in Stockholm and want to build in the same room as the team, where iteration is measured in hours and ownership starts on day one.

How I work.

I start with either a problem to solve or a business idea. I shape it around customer needs and technical realities, and look for a solution that can serve many customers instead of just one. Once the core is clear, I work with Design team on the experience, break it down into a focused story, and leave it ready for a developer or me to build.

How I develop features

  1. 01

    Start with an agent

    I always work with an agent. For bigger features or bugs that aren't obvious at first, I use specific skills to help it focus. For smaller tasks, I explain what needs doing and jump in.

  2. 02

    Scope the solution

    When the work needs a plan, I turn it into a detailed spec, including edge cases and what done looks like.

  3. 03

    Implement with agents

    Once the task is clear, I let one or more agents build the feature.

  4. 04

    Create feedback loops

    Browser Use, types, and tests help the agents see what they built and catch their own mistakes.

  5. 05

    Check manually

    I still open the feature and use it myself, from start to finish.

  6. 06

    Run an agent review

    I ask fresh agents to review the work and catch anything the first ones missed.

  7. 07

    Review the code

    Then I read the diff myself and fix whatever is left.

  8. 08

    Babysit the PR

    Finally, an agent watches CI and review comments until the PR is ready to merge.

Outcome

The result is a feature that has been planned, built, checked, and reviewed from a few different angles, usually in much less time.

GRASP

Let's automate the research the world still does by hand.

Grasp × Alex

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