Senior Backend Developer - Freelance
Location: Poznań, Greater Poland Voivodeship, Poland · Category: Engineering & Development · Seniority: Senior · Posted: November 10, 2026 · Verified: Nov 12, 2026
Role Overview & Description
Track team expansion and market signals for Netguru
Polaris7 monitors open roles, strategic market movements, and M&A developments in real time. Get automated intelligence briefings on Netguru and benchmark against direct competitors.
Netguru
netguru.comDigital product consultancy building software, design, AI, and commerce systems.
Unlock full company profile, competitors & live market signals for Netguru
Similar Positions in DACH
Related roles across advertising, media, and data
This role designs and delivers scalable services and infrastructure for creative automation, focusing on data-intensive backend systems and platform integrations. The engineer owns the design and delivery of new platform integrations, builds reliable APIs and data pipelines, and mentors other engineers. Requires strong experience with Node.js and TypeScript and a solid understanding of scalable system design.
This freelance Backend Developer role focuses on building and maintaining backend services and APIs for the Post Sales team, handling member personal data, settings, order delivery tracking, and support inquiries. The developer will work with .NET Core and related technologies to ensure robust, scalable customer-facing features.
Designs and builds scalable backend services for Grubhub's food delivery platform, focusing on high-throughput APIs and distributed systems. Collaborates with cross-functional teams to deliver reliable, low-latency features. Requires strong proficiency in backend languages and cloud infrastructure.
Architects and builds highly scalable, low-latency backend systems for a gaming clip platform serving millions of users. Designs critical APIs, evolves backend infrastructure, and mentors engineers, with deep expertise in Java microservices, RESTful APIs, and relational databases. Drives technical decisions across distributed systems handling thousands of requests per second, with experience in cloud infrastructure (GCP/AWS) and CI/CD.
More Positions at Netguru
3 more open roles
Design and execute comprehensive test strategies for software products, including manual and automated testing. Collaborate with development teams to identify defects and ensure high-quality releases.
Develop and maintain backend systems using Python and popular frameworks. Collaborate with cross-functional teams to deliver scalable and efficient solutions, ensuring code quality and performance.
This role manages technical projects from initiation to completion, coordinating development teams and ensuring alignment with business goals. The Technical Project Manager will create project plans, track progress, and facilitate communication between stakeholders. This position requires a strong understanding of software development processes and agile methodologies.