Backend Engineer

• Delivering innovative solutions - solving everything in the remote support world without barriers, with high quality, user-friendly and cross-browser experiences, while leveraging modern AI-assisted development tools where appropriate to enhance productivity and solution quality
• Driving technical initiatives within a team or organization and take on leadership responsibilities, including promoting the responsible adoption of AI-supported engineering practices
• Designing, building and maintaining reusable, performant, and reliable UI components, single-page applications and micro-services used by millions of users by collaborating closely with designers, product managers and other stakeholders to define project requirements, UI design and scope, while utilizing AI tools to support design, prototyping, and implementation where beneficial
• Building well-crafted software, and covering your code with unit- and integration tests, conducting code reviews and give valuable feedback to your colleagues, mentoring other people and continuously improving yourself and your team’s processes, brainstorming ideas in a cross-functional team in agile environment, taking ownership of features and epics with a strong team of enthusiastic and talented experts and leveraging AI where appropriate to support analysis, documentation, and decision-making while maintaining transparency and alignment

Staff Full-stack Engineer, Frontend, JavaScript

• Lead Image Management
• Architectural Design
• Own Test Frameworks
• Drive Configuration as Code
• Collaborate and Innovate

Staff Software Engineer, Public Cloud – Java, Python/Go

• Kpler has an opening for a Backend Engineer to build the platform behind our AI products: the services that power LLM agents serving analysts and customers across the commodity markets we cover.
• You will design and ship production services, integrate language models and external tools, and follow the "You build it, you run it" philosophy, owning your code from development through production.
• This role offers a stimulating environment where you can build state-of-the-art GenAI solutions that directly impact how thousands of users interact with complex data.
• You'll work at the frontier of AI and UX, with the freedom to experiment, learn, and shape the future of AI-powered data analysis.

Backend Software Engineer – AI & Agentic Systems

• Maintain and optimize a Ruby on Rails monolith
• Develop REST APIs in Kotlin or Java
• Ensure seamless feature integration in the platform
• Collaborate with cross-functional teams on projects
• Solve critical issues and improve system architecture

Senior Backend Engineer – Ruby, Kotlin

HUF 1,700,000 - HUF 2,100,000 per month

• maintain and enhance the existing Ruby on Rails monolith
• integrate new features written in Kotlin or Ruby into the existing ecosystem
• collaborate with the Voyager team to tackle production challenges
• ensure seamless operation of the critical components of the platform

Senior Backend Engineer, Budapest

• Working in agile development team
• Being a refactoring and unit testing junkie
• Being a fan of clean, object-oriented code and code review
• Research cutting edge technologies

Senior Java Software Engineer – HU, RO, SRB

• Working in agile development team
• Being obsessed with tested, clean, maintainable code

Senior .NET Software Engineer

• Lead and mentor a team of mid/senior backend engineers (4–5), including 1:1s, feedback, and performance management
• Translate product and business goals into clear technical roadmaps, sprint plans, and backend priorities
• Own the backend architecture and technical vision for mobile-first, consumer-facing apps used by tens of thousands of daily active users
• Drive and oversee implementation of new features for our mobile apps, working closely with iOS/Android, Product, Data, DevOps and Trust & Safety teams
• Take key architectural decisions around scalability, performance, reliability, data flows, and infrastructure on AWS
• Modernise and improve a large, Ruby on Rails codebase (including version upgrades and refactoring legacy areas) while keeping systems stable in production
• Identify and resolve performance bottlenecks, improve API speed and reliability, and design effective caching and database strategies
• Establish and continuously improve engineering processes, coding standards, code review practices, and deployment/CI pipelines
• Create and maintain clear technical documentation and design specs for backend systems and major initiatives
• Handle prioritisation and trade-offs in a fast-moving environment with changing quarterly priorities
• Be hands-on with coding and code reviews, especially for complex or high-impact areas, and step in during critical production incidents

Lead Backend Engineer, Ruby On Rails

• Gain deep technical knowledge across the Cloudera Data Engineering technical stack, with a focus on the runtimes of the stack like Apache Spark and Apache Iceberg, and apply this expertise in your daily work.
• Work with a team of talented infrastructure engineers.
• Help hire and mentor engineers while supporting their career growth.
• Drive architecture and design discussions, providing strong technical direction for the team.
• Collaborate with product, engineering, and cross-functional partners, leading the delivery of several large, critical features in Cloudera’s data engineering experience.
• Work on large-scale distributed systems, ranging from hundreds to thousands of nodes in production clusters.
• Bring passion for programming, clean coding practices, attention to detail, and a strong focus on quality.

Senior Backend Engineer, Spark

• Own the architecture, design, and evolution of our Kubernetes-based platform on AWS, ensuring scalability, resilience, and operational excellence
• Develop, maintain, and optimize Kubernetes infrastructure using Infrastructure as Code (CDK), enforcing best practices and architectural standards
• Act as the technical guide and domain expert for Kubernetes architecture, collaborating closely with the Architecture team to bridge high-level strategy with implementation and guide engineering teams with clear patterns, reference architectures, and best-practice recommendations
• Lead technical decision-making across multiple teams, providing mentorship, design reviews, and hands-on support to drive platform consistency and quality
• Drive proactive improvements across the platform, identifying scaling issues, reliability gaps, or operational inefficiencies before they become problems
• Design and implement secure, compliant, and highly observable Kubernetes environments, integrating monitoring, logging, and alerting systems
• Lead and support the migration of non-cloud-native applications to the new infrastructure, assessing readiness and implementing best practices for scalability and maintainability
• Champion automation and GitOps practices to reduce manual work, eliminate drift, and improve release velocity
• Lead cross-team initiatives and influence technical direction outside your immediate organization, driving adoption of cloud-native best practices
• Participate in on-call rotations and contribute to incident response and root cause analysis

Staff Kubernetes Engineer

• Elaborar informes periódicos y ad-hoc dirigidos a Business Partners, asegurando la calidad, fiabilidad y análisis de los datos.
• Realizar análisis y controles de calidad, incluyendo la definición de criterios, muestreo, revisión de información y seguimiento de resultados.
• Gestionar y resolver escalaciones de primer nivel, actuando como punto de contacto con equipos internos y clientes, y proponiendo soluciones eficaces.
• Coordinar y priorizar las tareas del equipo, asignando actividades, realizando seguimiento de objetivos y reportando el estado de las operaciones.
• Impartir formaciones internas para procesos de onboarding y actualización de procedimientos operativos.
• Detectar oportunidades de mejora y automatización de procesos, documentando procedimientos y colaborando en su implementación.
• Asegurar una correcta gestión de incidencias a través de herramientas de ticketing, garantizando el cumplimiento de plazos y niveles de servicio.
• Actuar como referente operativo dentro del equipo, promoviendo buenas prácticas y una orientación al cliente consistente.

Let's Go!

• Teljes stack felhőalkalmazások fejlesztése és üzemeltetése DevOps csapat keretein belül (UI, Frontend & Backend Logika, Adatbázis modell, Engedélyezési koncepció)
• SAP BTP Szolgáltatások értékelése és használata
• A mi mérnöki közösségünkben a minőség és a szabványok előmozdítása, innovatív megoldások javaslata és megvitatása a fejlesztésben
• Agilis munkavégzési elvek követése, mint CI/CD, teszt- és tervvezérelt fejlesztés

Full Stack Developer – JS, Node.js

• Kifejlesztése és üzemeltetése teljes stack felhőalkalmazásoknak DevOps csapat keretében (UI, frontend és backend logika, adatbázis modell, jogosultság kezelése)
• SAP BTP szolgáltatások értékelése és használata
• Minőség és standardok hajtása mérnöki közösségünkben, innovatív megoldásmegközelítések és fejlesztések javaslása és megbeszélése
• Agilis munkavégzési elvek követése, mint CI/CD, tesztelés- és design-vezérelt fejlesztés

• Developing and operating full stack cloud applications within a DevOps team (incl. UI, Frontend & Backend Logic, Database model, Authorization concept)
• Evaluating and using SAP BTP Services
• Driving quality and standards in our engineering community, providing and discussing innovative solution approaches and suggestions for improvement in the development
• Following agile working principles like CI/CD, test- and design-driven development

See all jobs on JobTailor

Staff Full-stack Engineer, Frontend, JavaScript

Staff Software Engineer, Public Cloud – Java, Python/Go

Backend Software Engineer – AI & Agentic Systems

Senior Backend Engineer – Ruby, Kotlin

Senior Backend Engineer, Budapest

Senior Java Software Engineer – HU, RO, SRB

Senior .NET Software Engineer

Lead Backend Engineer, Ruby On Rails

Senior Backend Engineer, Spark

Staff Kubernetes Engineer

Let's Go!

Full Stack Developer – JS, Node.js

Full Stack Developer – JS, Node.js

Full Stack Developer – JS, Node.js