Remote Senior Fullstack Engineer — AI Tax Platform

DNA Technology; Łódź; On-site; PLN 207,000 - 248,000; Full time

Job summary

DNA Technology is seeking a senior fullstack engineer to build and own AI-powered tax platforms. You’ll move from problem discovery to production, delivering frontend and backend features with real user impact.

You will work on an end-to-end product, shaping architecture, collaborating with AI and product teams, and ensuring fast iteration with quality code in a remote-friendly Poland setup.

Qualifications

• Senior-level commercial experience (min. 5 years) building fullstack applications (React + Python).
• Strong product mindset - focus on user problem and outcome, not only on implementation.
• Proven ability to take ownership end to end, from an initially unclear need to a working production solution.
• Comfort making decisions with incomplete information and clarifying the scope as you go.
• A pragmatic approach to engineering: you care about quality, but balance it with speed and business impact.
• Strong collaboration and communication skills - autonomy here does not mean working alone.
• Familiarity with cloud infrastructure in Google Cloud and/or Azure.

Responsibilities

• Build and maintain fullstack features across AI-powered tax preparation, planning and review products.
• Design and implement React interfaces, TypeScript APIs and Python backend services.
• Take ownership of features from the initial problem and discovery through implementation, release and further iteration.
• Work with real usage data and customer feedback to understand what should be improved next.
• Make product and technical decisions without waiting for every detail to be defined upfront.
• Collaborate closely with engineering, AI, product and domain experts.
• Talk to customer-facing teams and use feedback from real users to shape solutions.
• Keep the codebase clean, typed and performant while moving at startup speed.
• Decide where additional polish creates value and where shipping and learning quickly is the better choice.

Skills

React

Python

TypeScript

Tools

API design

Job description

DNA Technology is seeking a senior fullstack engineer to build and own AI-powered tax platforms. You’ll move from problem discovery to production, delivering frontend and backend features with real user impact.

You will work on an end-to-end product, shaping architecture, collaborating with AI and product teams, and ensuring fast iteration with quality code in a remote-friendly Poland setup.