Top Software Engineer Jobs in Budapest

Design, implement, and operate low-latency, highly available distributed control, data, and observability systems. Build region-spanning architectures, libraries, protocols, and tooling; diagnose and harden critical paths using metrics, tracing, testing, and real traffic; and shape platform capabilities around identity, scheduling, observability, and distributed state management.

The Senior Software Engineer will design, build, and optimize backend services and Kubernetes operators on multi-cloud platforms, focusing on infrastructure solutions and automation.

As a Senior Software Engineer, you will develop and manage a MongoDB solution on various platforms, ensuring reliability and security while contributing to a small team focused on impactful projects.

The Staff Software Engineer will lead technical design and delivery for ABBYY Vantage platform, mentor engineers, improve platform health, and influence architectural decisions.

As a Senior Software Engineer, you will develop and enhance ABBYY Vantage's document AI features, ensuring code quality, system reliability, and collaboration with cross-functional teams.

The role involves developing and maintaining ABBYY's Document AI platform, focusing on C# and cloud-native services, CI/CD workflows, and cross-functional collaboration.

Lead architecture and design of scalable, distributed software; integrate AI models into customer-facing workflows; own features end-to-end; mentor engineers; drive technical decisions; improve developer tooling, testing, CI/CD, deployment, and monitoring while collaborating with product and UX.

Build and improve Restream’s web interfaces and user-facing features for the AI Clips team. Design UI and business logic, collaborate with product designers, participate in code reviews, improve system reliability, and evaluate emerging technologies. The role requires strong JavaScript and TypeScript expertise, advanced React knowledge, CSS preprocessor experience, and familiarity with backend development, cloud infrastructure, containers, and continuous deployment.

Lead design and ownership of shared libraries, Spring Boot starters, and agentic frameworks. Set standards for agent orchestration, evaluations, and guardrails. Mentor teams on Python-based agents (LangChain/LangGraph), drive adoption, prototype research directions, and improve developer experience across Kotlin backend and client libraries.

As a Senior Software Engineer at Shapr3D, you will enhance CAD features, develop maintainable code, and evolve technical architecture. Your work impacts millions globally.

The Senior Software Engineer will research, design, and develop software solutions for automotive test platforms, ensuring quality and adherence to best practices while mentoring others.

Lead development and evolution of shared frontend libraries, frameworks, and tooling used across multiple product teams. Design scalable, maintainable, and reusable solutions, write high-quality production code, contribute to architecture, evaluate technologies, and mentor engineers while promoting engineering best practices.

Design, build, refactor and test features for a flagship SaaS product using microservices, REST APIs and SQL. Modernize legacy systems, run experiments/POCs, collaborate with product, mentor teammates, and drive cloud‑native architecture decisions.

Design, build, and maintain scalable Ruby on Rails SaaS applications and APIs. Own technical delivery, contribute to architecture, ensure secure DevOps-oriented deployments, mentor engineers, and improve engineering practices and automation.

Senior software engineer responsible for designing, developing, and maintaining business-critical applications. Collaborate with product, QA, DevOps, and stakeholders to translate requirements, implement scalable Java/Python solutions on AWS, address technical debt, improve performance, participate in code reviews, support releases, and ensure application stability and continuous improvement.

Full-stack Java (Spring) web application development in an agile DevOps environment. Improve application code and processes, mentor teammates, deliver customer projects and integrations with IoT and enterprise systems, and handle escalated support queries.

Build and maintain Python/TypeScript backend microservices that support CI/CD pipelines, cloud infrastructure (AWS/Azure), and scalable distributed systems; optimize reliability, mentor teammates, and collaborate across functions.

Senior individual-contributor to lead architecture and implementation of cloud-native SaaS systems using TypeScript and AI. Own services end-to-end, influence multi-team technical direction, establish AI governance and observability, mentor engineers, and improve engineering standards, security, and operational resilience.

Build core components of a diagnostic and personalization platform: backend data pipelines, frontends, services for genomic data ingestion, ML model integration, APIs, and cloud infrastructure. Collaborate with product and ML teams, iterate on prototypes and MVPs, and make architectural decisions supporting scalability and reliability.

Design and build the on-prem software stack for ModelVault appliances: containerized inference engines, model integration (LLMs/vision), deployment tooling, CLIs/GUI/APIs, OS and GPU setup, remote updates, telemetry, and collaborate with customers and founding team to iterate and scale the engineering org.

The role involves developing software for networking devices using C/C++ and Python, along with testing and integration tasks.

Build and ship browser-based 3D interactive features using React, Three.js, and WebGL; integrate frontend with a C++ computational backend on AWS; use AI tools (Claude Code) to accelerate development; prototype AI-powered product features; and collaborate with clinical scientists, UX, ML engineers, and QA.

Build foundational agent infrastructure for an AI assistant: orchestration, tool execution, context management, evaluation, and trust/permissions. Ship reliable, observable, and secure backend systems, launch agentic features, own core infrastructure, participate in on-call, and mentor others.

Design, build, ship, and maintain end-to-end product features across frontend, backend, and data layers. Own projects from definition through production, improve reliability and scalability, collaborate with product and design, mentor engineers, and engage with customers to solve real user problems.

Lead optimization of concurrent systems, scale backend microservices, and collaborate with developers and engineers on deployment for retail solutions.