Top Software Engineer Jobs in Budapest

Design, build, and maintain backend services for data collection and enrichment using Java and Spring. Own features end-to-end, contribute to API and system architecture, modernize legacy Python systems, optimize performance and reliability, improve monitoring/observability, and support production systems.

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

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.

As a Software Engineer II, you will collaborate on back office processes, create applications for operations and finance, own key initiatives, and troubleshoot production issues.

As a Backend Engineer, you will build and maintain scalable backend systems, work on significant development tasks, and collaborate with teams to enhance the Wise platform while ensuring code quality and stability.

Build end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, design and run experiments (A/B tests and AI evaluations), implement AI infrastructure for reliable LLM inference, and iterate quickly to scale production-ready LLM-powered products.

As a Senior Software Engineer, you'll lead design and development of scalable components for the Wise Assistant, innovate with AI, and mentor engineers.

Design and deliver data-driven solutions by partnering with subject-matter experts; develop data pipelines, ML models, and visualizations; track solution impact using attribution methodologies and manage technical communications in a knowledge management system.

Design, build, deploy, and operate scalable, secure AI and LLM-based platform services on AWS. Develop reusable libraries, infrastructure as code, CI/CD pipelines, and observability. Collaborate with applied scientists and product teams to productionize AI capabilities, ensure security and privacy, and drive platform-wide best practices for reliability, cost efficiency, and governance.

As a Senior Software Engineer, you will design and deliver secure microservices for Diligent's platform, leveraging AWS and AI tools while mentoring peers.

Design, build, and maintain scalable data infrastructure and ETL/ELT pipelines (Snowflake, dbt, Airflow). Develop backend APIs and cloud-native services on AWS, collaborate with data scientists and engineers, implement resilient distributed systems, and support the full software lifecycle.

Design, implement, test, and own platform-level software features close to hardware. Work includes debugging embedded systems, developing datapath and hardware-abstraction code for ASICs/FPGAs/network processors, and collaborating across design, architecture, and customer field engagements.

As a Staff Software Engineer, you will enhance replication support for Cloudera Data Platform, mentor junior engineers, and build robust replication systems.

Build and maintain AI-powered spam and scam detection infrastructure: design, implement, deploy, monitor distributed pipelines, support data science workflows, handle production incidents, and improve system resilience and scalability.

The role involves designing and implementing cloud-native Java applications, conducting code reviews, mentoring juniors, and collaborating with teams for project delivery.

Build, modernize, and maintain secure, scalable backend microservices in C#/.NET Core on AWS. Contribute to Angular front-end features, participate in code reviews and testing, improve legacy systems, use AI-assisted tools responsibly, and collaborate with Product, DevOps, and QA to deliver reliable SaaS solutions.

As a Senior Java Software Engineer, you will enhance software systems used in financial strategies, focusing on performance, scalability, and reliability.

Design, build, and own DevOps and infrastructure for greenfield internal tools and backend services. Implement CI/CD, IaC, containerization, observability, automated deployments, and secure networking while collaborating with backend and frontend teams and internal sysadmins.

Develop and maintain resilient, scalable, cloud-friendly server-side systems for the Data Fabric platform. Deliver functionality, improve resiliency and effectiveness, and support data distribution, governance, and integration for prime brokerage data consumers.

As a Software Engineer, you'll develop features, conduct automated testing, ensure quality standards, and collaborate on medical applications in a global Agile team.

Lead architecture for a multi-tenant Cloud Management Portal across AWS/GCP/Azure. Define scalable, secure designs, champion engineering best practices, implement IaC (Terraform/AWS CDK), CI/CD and observability, guide teams, and identify AI-driven features to optimize cost, detection, and automation.

The Backend Engineer will design and build scalable systems and APIs for enterprise AI products, focusing on performance and deployment across infrastructures. Responsibilities include optimizing backend performance, managing cloud infrastructure, and collaborating with teams to bring GenAI models to production.

As a Senior Full Stack Software Engineer, you will develop and maintain web applications, create API specifications, and write tested code while collaborating with various teams.

Lead organization-wide software and AI engineering strategy, architect large-scale data and LLM integrations, drive deployment and CI/CD practices, mentor technical leaders, and convert prototypes to production while ensuring AI evaluation, observability, and high code quality.

Build secure, serverless microservices and AI-powered features using TypeScript, Node.js, React and AWS. Own stories end-to-end, mentor junior engineers, design LLM integrations and agentic workflows, participate in code reviews, testing, CI/CD, and architectural discussions.