Top Software Engineer Jobs in Budapest

Build production-grade software and data pipelines for the ID Verification machine learning team. Develop Node.js, TypeScript, and Python services, create versioned training datasets, support ML model packaging and production serving, and translate research prototypes into scalable, tested systems. Collaborate with ML engineers, contribute to technical design and estimation, review code, mentor colleagues, participate in hiring, and ensure sensitive data is handled in compliance with residency and privacy requirements.

Build and maintain secure cloud-native microservices and REST APIs on AWS and Kubernetes. Develop production AI capabilities including LLM features, agents, retrieval-augmented generation, embeddings, and tool calling. Own features through requirements, testing, deployment, monitoring, and support. Apply secure coding practices, write automated tests, contribute to CI/CD, and collaborate across engineering, product, and security teams while developing expertise in cloud, AI, and agentic technologies.

Build and maintain secure cloud-native microservices and REST APIs on AWS and Kubernetes. Develop generative and agentic AI features using LLMs, retrieval-augmented generation, embeddings, and tool calling. Own development through deployment and support, write automated tests, contribute to CI/CD and monitoring, and apply secure coding practices across APIs, identity, secrets, and vulnerabilities.

Build and maintain secure cloud-native microservices and REST APIs on AWS and Kubernetes. Develop production AI capabilities including LLM features, agents, retrieval-augmented generation, embeddings, and tool or function calling. Own features through testing, deployment, monitoring, and support while applying secure coding practices. Contribute to automated testing, CI/CD, vulnerability remediation, and reliable production operations. Collaborate across engineering, product, and security teams while developing expertise in cloud, AI, and agentic technologies.

Build and maintain secure cloud-native microservices and REST APIs on AWS and Kubernetes. Develop production AI capabilities including LLM features, agents, retrieval augmented generation, embeddings, and tool calling. Own work from requirements through deployment and support, while applying secure coding practices, automated testing, CI/CD, monitoring, and vulnerability remediation. Collaborate across engineering, product, and security teams while continuously developing expertise in cloud, AI, and agentic technologies.

Build and maintain secure cloud-native microservices and REST APIs on AWS and Kubernetes. Develop production AI capabilities including LLM features, agents, retrieval augmented generation, embeddings, and tool calling. Own work from requirements through deployment and support, while writing automated tests, contributing to CI/CD and monitoring, and applying secure coding practices. Collaborate across engineering, product, and security teams while growing expertise in cloud, AI, and agentic technologies.

The Frameworks Software Engineer will build complex backend solutions, maintain code quality, architect abstractions, and collaborate with engineering and product teams.

Develop and modernize the Market Risk platform using Java, Spring, and relational databases while supporting business-as-usual requests and production operations. Architect scalable, secure solutions; maintain and optimize applications; implement unit testing and engineering best practices; and contribute to technical strategy, code reviews, design discussions, and technology adoption. Mentor junior and mid-level engineers, collaborate with global stakeholders, and use automation and AI tools across development, validation, and deployment.

Build and maintain secure cloud-native microservices and REST APIs on AWS and Kubernetes. Develop production AI capabilities including LLM features, agents, retrieval-augmented generation, embeddings, and tool calling. Own development from requirements through deployment and support, write automated tests, contribute to CI/CD and monitoring, and apply secure coding practices across APIs, identity, secrets, and vulnerabilities.

Build and maintain secure cloud-native microservices and REST APIs on AWS and Kubernetes. Develop production AI capabilities including LLM features, agents, retrieval-augmented generation, embeddings, and tool calling. Own features from requirements through deployment and support, while implementing secure coding, automated testing, CI/CD, monitoring, and vulnerability remediation. Collaborate across engineering, product, and security teams while growing expertise in cloud, generative AI, and agentic technologies.

Develop and maintain scalable full-stack customer platform features using Node.js, TypeScript, React, NestJS, REST, and database technologies. Design modular systems and microservices, optimize performance, write automated tests, review code, improve architecture, and contribute throughout the software development lifecycle. Mentor engineers, collaborate in cross-functional Agile teams, support continuous delivery, and help evolve SEON’s fraud prevention and customer-facing applications.

Develop and enhance Java-based risk applications in an international Agile/Scrum team. Design distributed data-processing and calculation solutions for large datasets, write complex SQL queries, contribute to application and data model design, and apply DevOps practices. Collaborate with business and IT stakeholders to deliver technology solutions supporting efficient processes and regulatory requirements.

Lead design, development, and deployment of scalable AI-powered customer-support automation, including Java microservices, Kafka pipelines, intent detection, routing, RAG, LLM workflows, and AI-agent integrations. Build solutions with AWS Bedrock, improve platform reliability and performance, collaborate on conversational experiences, and mentor engineers.

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.

Design, build, and operate scalable, secure cloud-native messaging and social integrations. Implement message routing, delivery, tracking, analytics, observability, automated tests, and CI/CD. Collaborate with product, security, and operations, participate in on-call rotations, drive reliability and performance improvements, and influence architectural direction while using AI-assisted engineering tools responsibly.

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 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.

Develop and maintain ID verification services across Node.js backends, React SDKs and dashboards, Lambda functions, databases, and customer-facing platforms. Design scalable features, optimize performance, write automated tests, review code, mentor engineers, and contribute throughout the software development lifecycle. The role includes modular architecture, microservices, event-driven systems, containerization, Kubernetes, CI/CD, and end-to-end ownership in a hybrid Budapest team.

Build and improve scalable Scala and Java middle-tier services for valuation control and finance technology. Design relational, columnar, and NoSQL database entities, collaborate with business and IT teams, own solution delivery, support SDLC processes, improve DevOps tooling, and develop testing strategies for large-scale distributed systems.

Design, implement, and maintain cloud connectors integrating Cloudera's platform with AWS, Azure, GCP. Build scalable data ingestion and synchronization code, lead architecture and design, mentor engineers, perform code reviews, troubleshoot production issues, and document APIs and designs.

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.

Design and develop scalable backend services with C#/.NET, build RESTful APIs, mentor engineers, and enhance system architecture for healthcare solutions.

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.

Build and ship full-stack product features using React, JavaScript or TypeScript, backend services, and REST APIs. Use AI-assisted development tools to accelerate delivery while reviewing, debugging, refactoring, and securing generated code. Collaborate with designers, product managers, and engineers in agile squads, improve frontend performance, participate in code reviews, and maintain strong testing and architectural standards.

Develop, test, deploy, and support high-performance electronic trading platforms. Troubleshoot and optimize production systems for reliability, latency, scalability, and availability. Collaborate with stakeholders and engineering teams to deliver distributed, cloud-ready microservices. Drive automation, observability, site reliability, and platform modernization while applying Agile, DevOps, and SDLC practices.