Top Tech Jobs & Startup Jobs in Budapest

Build and maintain complete web applications and backend services from architecture through production. Develop responsive interfaces, APIs, background workers, data pipelines, and AI integrations. Manage cloud deployment, monitoring, CI/CD, load testing, and system optimization. The role requires end-to-end ownership, strong full-stack development skills, relational database expertise, event-driven architecture knowledge, and the ability to work independently while communicating technical tradeoffs.

Design and execute comprehensive test plans for dApps and smart contracts, perform unit/integration/end-to-end testing, run security audits and vulnerability assessments, automate tests within CI/CD pipelines, monitor quality metrics, debug issues, and collaborate with developers and product managers to ensure reliable DeFi/EVM-compatible applications.

As a BDR SMB, you will build pipeline and generate opportunities for sales in the DACH region through high-volume outbound execution and cold calling, working closely with the GTM team.

Staff Software Engineer responsible for architecting and developing scalable web applications and APIs using Elixir, React, and PostgreSQL. The role involves solving ambiguous technical and business problems, ensuring system reliability and performance, collaborating cross-functionally, presenting solutions to leadership, writing tested code, participating in code reviews, mentoring engineers, and removing technical roadblocks.

Develop a highly optimized, open-source inference framework for AI networking acceleration on supercomputers and data centers. Build low-level infrastructure using hardware offloads, GPU kernels, RDMA networking, and performance optimization techniques. The role requires modern C++/C/Rust development, Linux expertise, TCP/IP knowledge, and understanding of computer architecture and operating systems, with CUDA, ML, LLM, parallel programming, HPC, and RDMA experience preferred.

Develop and execute OIDI’s European university recognition and commercial partnership strategy. Build relationships with universities, government agencies, sector bodies, and senior academic stakeholders; secure recognition and adoption of English language and pathway programs; negotiate agreements; manage institutional approval processes; grow existing partnerships; and deliver revenue targets. The role also requires market intelligence, pipeline forecasting, conference representation, extensive European travel, and cross-functional collaboration.

Serve as Viktor’s first dedicated legal hire, owning US-law commercial contracts, AI-specific contracting, data protection, enterprise deal readiness, templates, contract tracking, and external counsel. Support fundraising, corporate transactions, and entity administration across US, Polish, and German entities. Improve legal intake and workflows using approved AI tools while managing matters through signature or resolution.

Provide technical support for customers running Qdrant in production, troubleshooting Kubernetes, cloud, networking, storage, messaging, and database issues. Lead incident investigations, develop diagnostics and internal support tools, document solutions, and collaborate with engineering and platform teams. The role requires strong Kubernetes and infrastructure expertise, scripting ability, cloud experience, database knowledge, and clear communication in a remote, asynchronous environment.

Re-engage former Greek-market clients through phone, email, Viber, and WhatsApp. Manage the ex-client database, conduct quarterly follow-ups, maintain Salesforce records, identify leads, analyze the sales funnel, meet returned-client and revenue KPIs, and share customer insights with the product team.

Own Frontier Traders end to end, including Solana data ingestion, high-volume attribution pipelines, rewards and VIP systems, realtime leaderboards, partner integrations, and trader-facing product experiences. Lead architecture, delivery, testing, observability, incident response, and roadmap definition while working directly with traders, market makers, Foundation stakeholders, design, and product teams.