Senior Backend utvikler

Senior Fullstackutvikler - 8+ års erfaring - Oslo

Buckle Up Consulting

Vi ser etter en utvikler som trives med å skape gode digitale løsninger – enten du primært jobber med frontend, backend eller beveger deg sømløst mellom begge deler. Du har et sterkt engasjement for faget ditt, liker å samarbeide tett med andre, og motiveres av å bygge løsninger med høy kvalitet. Hva vi ser etter​ Kvalifikasjoner: Minimum 8 års erfaring med utvikling, gjerne innen Java eller Kotlin Gode kommunikasjonsevner på et skandinavisk språk Interessert i å høre mer? Ta gjerne kontakt for en uforpliktende prat. Arbeidsoppgaver​ Om rollen: Som utvikler vil du være involvert i hele utviklingsløpet -- fra idé og design til implementasjon og videreutvikling. Du vil få påvirke teknologivalg og bidra aktivt i diskusjoner rundt arkitektur og løsning. Vi jobber med et bredt spekter av teknologier, og det er en fordel om du har erfaring med noen av disse: Java, Kotlin, Spring, JavaScript, React, Vue, GraphQL, Kafka, PostgreSQL, Kubernetes, skyplattformer eller lignende. Vi tilbyr​ Hos oss vil du bli en del av et faglig sterkt miljø hvor samarbeid mellom utviklere, designere og andre fagressurser står sentralt. Vi verdsetter nysgjerrighet, initiativ og ønsket om å bidra til kontinuerlig forbedring -- både teknologisk og metodisk. Selskapet har lang erfaring med åpne teknologier og jobber med et bredt spekter av kunder og prosjekter, mange med stor samfunnsmessig betydning. Du vil få muligheten til å jobbe med moderne teknologi i tverrfaglige team, og bidra til løsninger som gjør en forskjell. Hva du kan forvente: • Varierte og meningsfulle prosjekter • Tett samarbeid med kompetente kolleger og eksterne samarbeidspartnere • Gode muligheter for faglig utvikling og påvirkning av egen arbeidshverdag • Et inkluderende og uformelt arbeidsmiljø • Sosiale og faglige samlinger, også på tvers av landegrenser

Senior Backend Engineer

ASSA ABLOY AB

Build technology that protects people, places, and everyday life. Your work won’t sit quietly in a backlog. It will shape secure, connected solutions used around the world — and you’ll have the trust and freedom to do your best work along the way. Why this role matters At Assa Abloy, technology plays a direct role in creating a safer, more open world. As a Senior Backend Engineer, you’ll be part of teams building secure, scalable digital platforms that power smart access solutions globally. This is a role for someone who wants to own meaningful problems, contribute to technical direction, and work in an environment where quality, balance, and long-term thinking genuinely matter. The role You’ll work as part of a small, cross-functional team with shared end-to-end responsibility, collaborating closely to drive work from idea to delivery and continuous improvement. The team owns both the direction and execution, with a strong focus on improving our customers’ hospitality experience. In this role, you’re expected to take initiative and help move work forward, ensuring progress and alignment across disciplines. You’ll challenge assumptions, surface risks early, and contribute to sound technical decisions by bringing clarity, pragmatism and focus to complex discussions while helping the team deliver meaningful, high-quality outcomes. What you’ll work on Deliver meaningful features end-to-end — design, build, test, deploy, and evolve backend-focused services with a strong sense of ownership and quality. Build modern, scalable systems — develop primarily in Java, Kotlin, Golang, collaborating with frontend engineers and contributing where needed to React/TypeScript applications. Shape architecture and technical direction — apply Domain-Driven Design, Test-Driven Development, microservice and event-driven patterns to solve complex problems and raise the bar across the team. Lead cloud-native development — design and operate services on AWS, using containers, orchestration platforms, and serverless patterns to build resilient, future-proof solutions. Design data and system behaviour at scale — model data across NoSQL and relational systems, ensuring performance, reliability, and secure operation in distributed environments. Strengthen delivery and operational excellence — improve CI/CD pipelines, support production systems, and continuously refine engineering practices for long-term sustainability. What will help you succeed Solid senior experience (5+ years) building backend systems in cloud-native, distributed environments. Strong ownership mindset — you’re comfortable taking a feature from idea to production and standing behind your decisions. Architectural judgement — you know when and how to apply DDD, TDD, microservices, and event-driven design pragmatically. Hands-on cloud and DevOps experience — particularly with AWS, containerisation, CI/CD, and modern deployment models. Experience leveraging AI-assisted development tools and methods to enhance productivity, code quality, and system design. Clear, thoughtful communication and a willingness to mentor others. Why Assa Abloy At Assa Abloy, you’ll join a global organisation with a distinctly Scandinavian approach to work: trust over control, clarity over noise, and people over process. Meaningful mission — Your software helps protect homes, businesses, and communities around the world, contributing to solutions people rely on every day Innovation at scale — Work with modern cloud platforms, event-driven architectures, and evolving technologies in a global environment Autonomy and trust — You’re trusted to make decisions, influence design, and own your work from idea to impact Growth and development — Learn continuously, deepen your technical expertise, and explore opportunities across teams and borders Work–life balance — Flexible working, hybrid options, and a culture that supports sustainable performance Ready to build something that matters? If you’re looking for a senior developer role where your skills, judgement, and wellbeing are genuinely valued, we’d love to hear from you. Apply today and bring your expertise to a role where your decisions truly shape the future of smart access. We review applications continuously, so don’t wait. We’re committed to building diverse, inclusive teams and encourage applications from all who see themselves thriving here. To make sure your personal data stays protected, we do not review applications sent via email or post. If you have questions about the role or process, contact Léa Rein, Senior Talent Acquisition Business Partner. Let’s create a safer and more open world — together. We are the ASSA ABLOY Group Our people have made us the global leader in access solutions. In return, we open doors for them wherever they go. With nearly 63,000 colleagues in more than 70 different countries, we help billions of people experience a more open world. Our innovations make all sorts of spaces – physical and virtual – safer, more secure, and easier to access. As an employer, we value results – not titles, or backgrounds. We empower our people to build their career around their aspirations and our ambitions – supporting them with regular feedback, training, and development opportunities. Our colleagues think broadly about where they can make the most impact, and we encourage them to grow their role locally, regionally, or even internationally. As we welcome new people on board, it’s important to us to have diverse, inclusive teams, and we value different perspectives and experiences.

Senior Backend Engineer (Java)

Adyen

This is Adyen Adyen provides payments, data, and financial products in a single solution for customers like Meta, Uber, H&M, and Microsoft - making us the financial technology platform of choice. At Adyen, everything we do is engineered for ambition.  For our teams, we create an environment with opportunities for our people to succeed, backed by the culture and support to ensure they are enabled to truly own their careers. We are motivated individuals who tackle unique technical challenges at scale and solve them as a team. Together, we deliver innovative and ethical solutions that help businesses achieve their ambitions faster. About the Team The Payment Gateways team (used to be known as IPP Payments Backend) is a critical pillar of Adyen’s Core Payments solution. The Core Payments group handles the foundational business logic, diverse payment flows, and global features that empower Adyen’s merchants worldwide. As part of the Payment Gateways team, you will design and build the infrastructure powering Adyen’s in-store payment experience. This means engineering systems capable of handling massive, simultaneous global traffic while maintaining rock-solid reliability for thousands of physical terminals, mobile devices, and merchant hosts. What You Will Do As a Backend Engineer (Java), you will orchestrate complex payment flows by integrating multiple Adyen systems and defining the unified architecture for our next-generation payment features. * Design & Deliver: Build, test, and deploy high-volume, low-latency Java applications that form the backbone of our global payment systems. * Architect for Scale: Collaborate across Data and Platform engineering teams to design highly resilient, scalable services with reliability at their core. * Own the Technical Lifecycle: Drive engineering best practices, contribute to scalable architecture designs, and actively participate in product roadmap discussions. * Data-Driven Optimization: Define, implement, and monitor performance KPIs to proactively identify and eliminate system bottlenecks. * Collaborate Globally: Partner cross-functionally with global product managers and engineers, occasionally collaborating directly with merchants to understand how businesses consume your solutions. Who You Are * Senior Java Developer: You have 8+ years of hands-on experience delivering high-impact backend services using Core Java, web services, and SQL/PostgreSQL, with a proven track record of technical leadership and mentoring junior engineers. * Scalability: High availability, fault tolerance, and low latency aren't afterthoughts for you—they are non-negotiable architectural prerequisites. * API Expert: You possess a strong understanding of modern API frameworks (such as REST and OpenAPI), alongside best practices for API security and developer experience. * Curious & Forward-Thinking: You actively evaluate emerging technologies and alternatives, confidently presenting your findings during architectural reviews. * Collaborative Communicator: You know how to get things done by actively seeking out diverse perspectives and bringing people together to solve complex problems. * Customer-Centric: You balance deep technical rigor with genuine Customer Empathy, always keeping the end-merchant's business success in mind. Our Diversity, Equity and Inclusion commitments  Our unique approach is a product of our diverse perspectives. This diversity of backgrounds and cultures is essential in helping us maintain our momentum. Our business and technical challenges are unique, and we need as many different voices as possible to join us in solving them - voices like yours. No matter who you are or where you’re from, we welcome you to be your true self at Adyen.  Studies show that women and members of underrepresented communities apply for jobs only if they meet 100% of the qualifications. Does this sound like you? If so, Adyen encourages you to reconsider and apply. We look forward to your application! What’s next? Ensuring a smooth and enjoyable candidate experience is critical for us. We aim to get back to you regarding your application within 5 business days. Our interview process tends to take about 4 weeks to complete, but may fluctuate depending on the role. Learn more about our hiring process here. Don’t be afraid to let us know if you need more flexibility. Adyen is an equal opportunity employer. We do not discriminate based on race, color, ethnicity, ancestry, national origin, religion, sex, gender, gender identity, gender expression, sexual orientation, age, disability, veteran status, genetic information, marital status or any legally protected status. All your information will be kept confidential according to EEO guidelines.   This role is based out of our Bengaluru office. We are an office-first company and value in-person collaboration; we do not offer remote-only roles.