Middle+/Senior Fullstack (Python+React) Developer

Home Vacancies Middle+/Senior Fullstack (Python+React) Developer

*instinctools is a software development company that provides custom software solutions for businesses of all sizes. Our team works closely with clients to understand their specific needs and provide personalized solutions that meet their business requirements.

Our team is looking for a Middle+/Senior Fullstack (Python+React) Developer for one of our clients.

Our customer is one of the TOP-5 global management consulting firms considered to be among the most prestigious ones in the world. Hundreds of customers from Fortune-500, including the largest global financial institutions, the world’s top media companies, technology companies and federal government agencies rely on our Client’s proven platform and services.

About the project:

The team focuses on delivering advanced diagnostic and analytical solutions across various industries. The department builds cutting‑edge tools, leverages proprietary data assets, and provides deep insights to help clients optimize performance and make data‑driven decisions.

Role Overview:

We are looking for a Full‑Stack Engineer (Middle+/Senior) who is comfortable working across the entire stack – from UI development to backend logic and data processing. The role involves building new product functionality end‑to‑end and contributing to an evolving analytics platform used by global enterprises.

Our expectations of the candidate:

Strong full‑stack engineering experience, confident working across frontend and backend

Ability to switch between UI development, API design, and data processing
Hands‑on experience with modern frontend frameworks (React, Next.js)

Experience building backend services and APIs (Python )
Solid understanding of databases and data modeling (PostgreSQL or similar)
Experience working with data processing pipelines (parsing, transforming structured data)
Proactive, ownership‑driven mindset; ability to independently deliver cross‑stack features
Comfortable in environments with flexible role boundaries and evolving responsibilities
Basic DevOps experience (Docker)
English: Upper-Intermediate or higher

Soft skills:

Strong ownership mindset and accountability.
Effective communication in cross-functional teams.
Analytical thinking and structured problem-solving.
attitude and continuous learning mindset.
Ability to prioritize and work in a fast-paced environment.

Responsibilities and tasks:

Own feature development end-to-end: from UI implementation to backend logic and data processing
Design and build new product sections, including pages, UI components, and integrations with backend services
Develop backend APIs for data ingestion, processing, aggregation, and storage
Work with structured data (e.g. Excel), including parsing, transforming, and aggregating datasets
Store and manage processed data (e.g. JSON format) in internal storage systems
Collaborate across frontend, backend, and database layers depending on project needs
Contribute to database design, queries, and data modeling
Implement background jobs and asynchronous processing where needed
Ensure quality through testing, including end-to-end test coverage

We offer:

flexible working time;
professional and ambitious team;
transparent system of professional and career development;
learning opportunities, seminars and conferences and time for exploring new technologies;
the opportunity to realize your potential outside the projects: we arrange meetups and conferences where our staff can perform, develop professional communities;
full remote work;
co-funding for language courses (English).

Join us and be part of a team that is changing the world through technology.

Important Notice Regarding Your Personal Data Security

At *instinctools, we take the security of your personal data very seriously. Please be informed that all official communication, offers, and correspondence from *instinctools are conducted only through our verified company resources, including:

Official Email Domain: @instinctools.com
Company Website: https://www.instinctools.com

Important Reminder:
*instinctools will NEVER ask for sensitive personal or financial information, including:
– Bank account details
– Credit/debit card numbers
– Passwords or PINs

If you receive any suspicious requests claiming to be from *instinctools via unofficial channels (e.g., personal emails, social media DMs, or phone calls), please:

– Do not respond or share any information.

– Report it immediately to compliance@instinctools.com or your official contact.

Your trust and security are our top priorities. For any questions, always verify through our official channels.

Thank you for your attention and cooperation.

Developers

*instinctools is a developer of IT solutions for Western Europe. We have over 350 projects in our portfolio. The spheres are different – from healthcare and medicine, training and education, to digital advertising, economics and IT. For the software implementation and maintenance across such a number of projects, competent developers are important.

We use a modern technology stack, the key of which are:

Javascript, ReactJS, Angular, Node.js, Golang, Python, Java, iOS, Android, Blockchain, AWS.

Join the *instinctools team!

*instinctools Poland
We have had a representative office in Poland (Warsaw) since 2021. Our Polish team consists of highly qualified and experienced specialists – most of them are Middle to Senior level Developers.
Right now we’re on the lookout for bright and innovative minds to join our professional team!

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