Top Software Engineer Jobs in Budapest

Develop, test, deploy, and maintain full-stack SaaS software. Integrate LLM APIs and external services, troubleshoot and improve existing systems, collaborate with product and design, and produce technical documentation.

Build and own React Native features for Kraken’s consumer mobile app, from product discovery through launch, measurement, and iteration. Partner with Product and Design to create responsive, trustworthy financial experiences using dynamic or real-time data. Guide development for a new Asian-market app, including regional UX, connectivity restrictions, vendors, and telemetry. Contribute to architecture, performance, reliability, code reviews, and product engineering standards.

Build and ship backend features for enterprise Coder deployments, including database migrations, observability, reporting, auditing, security, scalability, and reliability improvements. Investigate production issues, resolve operator problems, document designs, participate in code reviews and RFC discussions, and join on-call rotations. The role requires professional Go development, concurrency knowledge, SQL expertise, debugging ability, and strong communication.

Own the architecture and delivery of customer-facing Rust backend services for trading, payments, and crypto experiences. Lead ambiguous, cross-team initiatives from concept through launch, shape product roadmaps, mentor engineers, review designs, and establish engineering standards. The role requires deep expertise in asynchronous Rust, distributed systems, RPC, Kafka, and event-driven architectures, plus an AI-first development approach and strong product engineering mindset.

Build and operate backend pricing systems for real energy contracts. Responsibilities include designing the Pricing API, consolidating pricing logic, improving quote speed, implementing error handling and observability, creating alerting, explaining pricing failures, and supporting live incidents. The role requires production Python backend experience, FastAPI, SQL, data-heavy systems, end-to-end project ownership, and AI-assisted development workflows.

Develop and enhance MetaMask social and multi-chain experiences across Portfolio, browser extension, and mobile platforms. Collaborate across teams on complex projects, mentor engineers, and build scalable full-stack applications using React, React Native, modern JavaScript, blockchain technologies, APIs, testing, and continuous integration. Ensure cross-platform compatibility and apply web security best practices.

Design, develop, test, and maintain scalable enterprise web applications for the Codebeamer ALM platform. Own complex features through deployment, resolve defects, optimize quality and performance, and contribute to architecture decisions. Collaborate with product, QA, UX, support, and engineering teams; participate in code reviews, CI/CD, documentation, and Agile practices. Mentor junior engineers, troubleshoot complex issues, demonstrate completed features, and promote technical excellence.

Build and evolve Rerun’s open-source viewer, cross-language SDKs, and integrations with Rerun Hub. Develop high-performance interfaces for large-scale multimodal data, optimize workflows across desktop and web, make full-stack architecture decisions, and collaborate with backend, Hub, design, customers, and the open-source community. The role involves UI development, rendering, data handling, infrastructure, real-time applications, visualization, and performance optimization.

Develop and maintain Linux kernel features for Arista EOS using C, C++, and Python. Integrate upstream kernel releases, qualify CPUs and NICs, build automated tests, troubleshoot customer and system-test issues, contribute patches upstream, and provide technical leadership and mentorship.

Develop and maintain Arista EOS networking software for data center switches using C and C++. Responsibilities include writing specifications, implementing routing and forwarding features, developing automated tests, debugging software, supporting customer network issues, collaborating with system test and support teams, mentoring engineers, reviewing code, and managing project schedules.

Develop and optimize software solutions for industrial additive manufacturing in an agile team. Responsibilities include designing algorithms, data structures, and software subsystems; debugging complex issues; benchmarking and improving performance, stability, efficiency, and scalability; and contributing to software quality and documentation. The role uses Vue.js, TypeScript, Python, C++, MongoDB, Docker, and automated development tools.

Owns the design, development, modernization, deployment, and operation of production software systems. Responsibilities include incrementally decomposing monoliths into scalable services, maintaining API and data compatibility, improving reliability and performance, implementing automated testing, operating AWS cloud services, monitoring production systems, participating in 24/7 on-call, and using AI-assisted development tools.

Build and operate the inference API platform powering AI services at global scale. Own distributed systems, datastores, observability, analytics, billing, usage metering, role-based controls, and CI/CD. Diagnose performance issues using query profiling and flame graphs, optimize reliability and latency, and deliver features end-to-end from design through production rollout. Collaborate directly with product and engineering teams in a fast-paced, ambiguous startup environment.

Design and build distributed Go systems that autonomously manage Kubernetes infrastructure and cloud resources at scale. Own features end to end, debug complex production issues, integrate with AWS, GCP, and Azure APIs, and work with Kubernetes internals, time-series data, observability, CI/CD, and cloud-native tooling. Collaborate across teams, influence product direction, and participate in on-call rotations where required.

Develop and support full-stack software infrastructure for automated verification and validation of IoT MCU and wireless products. Build applications, utilities, databases, web tools, and data-analysis solutions; troubleshoot software and assist hardware and IC design engineers. Evaluate technologies, create training materials, communicate across teams, and apply testing, reporting, visualization, and AI-powered tools.

Develop and maintain Python and Pytest-based automated tests for embedded Bluetooth Low Energy products. Perform functional and non-functional testing, monitor continuous integration test execution, investigate defects, and improve test coverage. Collaborate with developers, product managers, application engineers, and global QA teams to validate requirements and communicate testing results. Use AI-powered tools to improve coding efficiency.

Design, build, operate, and optimize backend services in Go for authentication, authorization, billing, audit, notifications, pricing, and reporting. Own complex features end-to-end, troubleshoot security- and money-critical production issues, optimize databases and high-load systems, collaborate across teams, contribute to product direction, and participate in on-call rotations.

Design, build, and operate internal platform systems supporting CI/CD, GitOps, observability, local development, Kubernetes, and cloud infrastructure. Improve developer productivity through paved roads, self-service tooling, and reliable deployment workflows. Debug complex production issues, optimize performance, contribute to the platform roadmap, and participate in on-call rotations.

Develop and architect features for Malwarebytes Browser Guard, serving millions of users. Write high-quality, tested code; design integrations; collaborate with Product, UX, and QA; review code; mentor engineers; and support delivery of the product roadmap. The role emphasizes React, JavaScript/TypeScript, Go, debugging, system architecture, AI workflows, user-centric design, and strong communication.

Design, build, and improve distributed clearing and securities-finance systems supporting brokerage products. Own projects from ideation through deployment, develop reliable APIs and integrations, refine existing infrastructure, and participate in on-call operations. The role requires strong systems fundamentals, attention to detail, financial-markets interest, and ownership of production systems handling customers’ money.

Own end-to-end development of Kimchi Studio features, a desktop application for collaborative autonomous coding agents. Design, implement, test, and roll out product capabilities using TypeScript, Electron, React, Node.js, and Go. Diagnose performance issues with query profiles and flame graphs, prioritize UX polish and speed, and collaborate directly with product and engineering teams in a remote-first environment.

Build and scale Base360.ai’s short-term rental platform, including customer-facing applications, APIs, automation engines, AI-powered workflows, third-party integrations, and cloud infrastructure. Develop systems for reservations, pricing, payments, guest communication, property operations, reporting, and financial workflows. Own projects end to end, make architectural decisions, ensure reliability, and deliver scalable products in a remote-first startup environment.

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.

Build and operate scalable cloud infrastructure for global enterprise applications. Lead incident response, root-cause analysis, automation, reliability improvements, and full-stack production diagnostics. Partner with engineering, product, design, and QA teams on scalable system design, primarily focused on backend development. Participate in design reviews, mentor engineers, and communicate effectively during outages and complex technical initiatives.

Productionize AI-built GTM software prototypes into secure, reliable customer-facing applications. Own hosting, environments, CI/CD, secrets, backups, releases, code quality, monitoring, security, staged rollouts, and integrations across CRM, ERP, and internal data systems. Build context infrastructure for GTM and customer-facing agents, reconcile data across systems, collaborate with product and commercial teams, and contribute to Wingtra’s AI engineering practice.