Top Software Engineer Jobs in Budapest

Implement and optimize EVM-compatible features, reduce gas usage, develop and test smart contracts, collaborate on Ethereum infrastructure, and provide technical support.

Build and maintain high-security mobile wallet apps using React Native, Swift, or Kotlin. Implement biometric authentication and secure key storage, collaborate with cross-functional teams, debug performance issues, and propose UX and security improvements.

Senior Software Engineer to design and implement C++/Python software, accelerate workloads with CUDA, develop and maintain Linux kernel modules and system services, optimize system and GPU performance, manage Linux systems, mentor junior engineers, and integrate AI technologies across products.

Join Zocks as a Senior Software Engineer to integrate AI models, solve complex problems, and enhance product offerings through innovative software solutions.

Lead design and delivery of secure, scalable TypeScript/Node.js microservices and React frontends. Architect and implement AI/LLM features (LLM integrations, agentic workflows, RAG), embed governance and monitoring, mentor engineers, and collaborate with Product, Security, and DevOps to drive reliable, cost-effective solutions.

Lead QA strategy across multiple teams, design and maintain test automation frameworks (Playwright, TypeScript), integrate tests into CI/CD, apply AI-driven testing and responsible AI checks, collaborate cross-functionally, use observability to improve quality, and mentor engineers.

The Senior Software Engineer will design and develop high-quality web and mobile applications, ensuring code quality while collaborating with product teams and mentoring junior engineers.

Build and ship secure, production-ready CI/CD and AI-integrated features end-to-end. Design, implement, and iterate on products (e.g., hardened GitHub Actions, agent features), work closely with Product and front-end teams, make architectural decisions, and extend Chainguard's agentic AI capabilities into customer-facing experiences.

Build and maintain user-facing features and interfaces for Restream web services. Design and implement UI and business logic, collaborate with product designers and engineers, perform code reviews, improve reliability and scalability, and evaluate emerging technologies.

As a Principal Software Engineer at Autodesk, you will shape technical direction, solve complex design automation challenges, and collaborate with cross-functional teams to deliver user-facing products. You'll work hands-on with cloud-based systems and drive architectural decisions, contributing to sustainable solutions in design.

Join the Kubernetes product team to design and implement Kubernetes operators and addons, write high-quality Golang and Python code, debug issues, collaborate with a distributed team, mentor colleagues, and contribute to open-source integration and lifecycle management. Travel 2–4 weeks yearly for team events.

Design, implement, and scale Rust services and libraries for trading, payments, and crypto. Build reliable, high-performance distributed systems, collaborate on architecture, write testable async network code, and own production systems end-to-end.

The Senior C++ Software Engineer will build software for quantitative research and portfolio production, focusing on scalable systems and collaboration with teams.

Design, build, and own secure, scalable C++ services on AWS for Diligent's SaaS compliance products. Lead architecture, mentor engineers, integrate AI/LLM tools responsibly, implement IaC, containerization, CI/CD, monitoring, and database optimization, and partner with product, security, and DevOps to ensure reliable, compliant deployments.

Lead implementations and integrations of CMT backend customer solutions. Design, develop, test, deploy, and operate secure, scalable integrations; collaborate with Sales, Engineers, and Solution Architects; participate in architecture reviews, sprint planning, on-call rotation, and release/deployment pipeline improvements. Conduct remote and on-site due diligence with clients and support production systems in regulated environments.

Build and maintain services and tooling to automate and secure network lifecycle across data centers. Implement CI/CD, staged rollouts, drift detection, observability pipelines, and APIs that integrate network source-of-truth with the cloud platform. Collaborate with network engineers and SREs to turn operational pain into production-grade automation and tooling.

Lead design and development of Windows desktop applications, ensure accessibility, enforce best practices, and collaborate with cross-functional teams.

Work on Percona's open-source MongoDB operational tools (primarily ClusterSync and also Backup). Build and harden a Go-based replication engine handling initial cloning and continuous change streams, ensure correctness and fault tolerance at scale, support sharded clusters, optimize performance and resource usage, and maintain CLI/HTTP APIs, metrics, logging, tests, and packaging. Collaborate openly via GitHub pull requests and JIRA.

Develop core backend components for a blockchain network, focusing on networking, reliability, scalability, and high-quality software practices.

Develop and enhance front-end, server-side, and database applications, focusing on blockchain products while ensuring high performance and security.

Dragonfly is seeking Software Engineers for various portfolio companies, focusing on crypto technologies. Engineers of all experience levels are needed across multiple stacks.

As a Distributed Systems Engineer, you'll design and evolve LiveKit's core systems, implement resilient architectures, and enhance reliability and developer velocity, working on critical features in production environments.

The Senior Infrastructure Engineer will manage and scale LiveKit's core infrastructure, focusing on reliability and performance, while working on Golang code and automation for distributed systems.

Design and evolve core control, data, and observability systems; implement resilient region-spanning architectures; build libraries, protocols, and tooling; diagnose and harden critical paths using metrics, tracing, and testing; and shape platform capabilities across identity, scheduling, observability, and distributed state management.

Design, implement, and manage LiveKit's infrastructure, focusing on performance, reliability, and automation while ensuring effective incident management and coordination with vendors.