
Sumup · Warszawa
SALARY RANGE: 18 850 - 29 660 PLN PER MONTH ABOUT SUMUP Be empowered to do more that matters. At SumUp, we're on a mission to empower small businesses acros...
Be empowered to do more that matters.
At SumUp, we're on a mission to empower small businesses across the globe by providing a vast set of simple and affordable
business tools to help them start, run, and grow their businesses. Today, over 4 million businesses in 36 markets rely on SumUp as
their financial partner to manage payments, finance and customer relationships.
You’ll join the Sell Online Tribe, the group shaping how merchants bring their businesses to life online. We design and build
tools that help millions of entrepreneurs, from barbers to bakers, sell their products and services anywhere. Our focus is on
Online Store and Bookings, two products at the heart of SumUp’s ecosystem. Together, they give merchants the power to manage
appointments, showcase their offerings, and get paid—all from their phones.
We’re a cross-functional team of Product Managers, Designers, and Engineers who move fast, collaborate openly, and care deeply
about crafting beautiful, performant mobile experiences. As part of this team, you’ll help us expand into new verticals, close the
feature gap, enabling us to position our product as a complete and competitive solution for small merchants, and make digital
selling effortless for small businesses everywhere.
🌎 Opportunity to work from our vibrant Warsaw office in the Hala Koszyki. This involves a hybrid setup
🌈 Commitment to Diversity and Inclusion: be part of a workplace that values and promotes diversity, fostering an inclusive
environment where everyone's perspectives are respected and embraced
🚀 Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp's future success
📚 A dedicated annual L&D budget of €2000 for your individual development, which can be used to attend conferences and/or advance
your career through further education
🚴 Fitness support: work out on-site at our gym or explore the city using the Multisport Card, subsidised by SumUp for access to
sports facilities across Warsaw
🩺 Commitment to well-being: access health insurance coverage for you and your family, plus life insurance to further protect your
peace of mind
🏖 Generous time off: enjoy 26 days of paid leave plus public holidays and special leave days
🌴 Break4me: 1-month sabbatical after 3 years of service
🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team
The stated salary range represents the expected compensation for candidates who meet the core requirements of this role. Offers
above this range may be considered in exceptional circumstances, subject to internal review and approval, where a candidate's
qualifications, skills, or experience significantly exceed the role's standard expectations.
Job Application Tip
We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is
only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.
Etraveli Group is a leading global flight technology provider, specializing in flight sales and offering flight content delivery and fintech products. We are here to solve complexity, by connecting millions of flights and travelers across the globe, from search and selection to trip and beyond. We partner with major global platforms such as Booking.com, Google Flights, Skyscanner, and Kayak, providing seamless flight booking and related services. Our B2B portfolio includes a separate fintech entity with its flagship product, PRECISION, a risk management solution, Sweden’s leading flight comparison site Flygresor.se, Tripstack, our B2B Flights as a Service Provider and world leader in virtual interlining, and Wenrix, the embedded AI platform for flights. We also operate our own online travel agency brands including Gotogate, Mytrip, and Flightnetwork. Every day we strive to make the world smaller for our customers and bigger for our people. Our diverse team of more than 3200 passionate professionals is what makes us the industry’s tech wonder and the best in the world at what we do. Major offices in Sweden (HQ), Greece, India, Canada, Israel, Poland, UK, and Uruguay. The Team: Platform Services At the heart of this technology is the Platform Services team, a highly technical group responsible for maintaining and evolving the foundational aspects of the Etraveli Group platform. Our mission is to ensure we have a robust environment to build, deliver, and run services—from the very first lines of code in a project to maintainable services running in production, whether in AWS or our own datacenters. We manage our CI/CD setup and cloud infrastructure using Infrastructure as Code (IaC), providing project templates and architectural support to development teams and strategically important projects. Today, the team consists of a collaborative mix of cloud infrastructure specialists and tech-focused senior developers. The Role As we grow and expand our support for new teams and projects, we are looking for a Senior Engineer or Hands-on Architect to strengthen our ranks. While the team handles infrastructure, your focus will be on the software side of building services: code, design, system architecture, and CI/CD. In this role, you will certainly draw boxes and arrows on whiteboards to map out designs, but more importantly, you will write and update the code within our templates and CI/CD pipelines to support our developers. You will be a key voice in discussions—both within the team and across the organization—on how to best design and solve complex technical tasks. Requirements To be a good fit for this role, we believe you possess the following qualifications: Experience: At least 10 years as a software developer and/or architect (likely more). Java Expertise: Extensive experience as a Java backend developer, very comfortable in a senior capacity. Polyglot Mindset: Experience with programming languages beyond just Java. Mentorship: You enjoy supporting other developers and can discuss complex software solutions with both teams and stakeholders. CI/CD & Kubernetes: At least some experience with CI/CD (and a willingness to become an expert) and a strong understanding of Kubernetes—including the ability to write and troubleshoot manifest files independently. Broad Technical Interest: An interest in the underlying infrastructure required to run services, as well as a passion for service architecture and IaC (without being "married" to a single tool). Tech Stack Knowledge: Meaningful experience in several of the following: AWS, Linux, shell scripting, Git, Jenkins, Groovy, Typescript, React, Python, MySQL, Couchbase, Kafka, RabbitMQ, Terraform, CDK, CloudFormation, Gradle, Spring Boot, Kubernetes, Helm, OpenSearch, Prometheus, Grafana, observability, security, networking, and testing. Communication: Comfortable speaking and writing in English. Ready to take off from day #1 Thorough On Boarding Process We are building a stellar onboarding adventure just for you, spanning your first 120 days, including access to learning resources, Q&A sessions with our CEO and a buddy program. Competitive Benefits We pay fairly and align compensation with your role's impact on the company. Referral bonus, pension and insurances are also applicable, with some variations across our locations. Wellbeing & Community In order to be the best version of you every day, you need an environment that provides for your wellbeing. From breakfast & good coffee to start your day to healthcare, employee assistance plans and team bonding events we've got you covered! Opportunities for Development You will find extensive learning opportunities, team training and workshops connected to your role as well as guidance from renown leaders, all provided in a fast pace environment with flat hierarchies. Hybrid Work We want you to enjoy the best of all worlds and we know that doesn't always mean working at the office. We have a hybrid policy, including working from anywhere 2 weeks every year. Diversity disclaimer At Etraveli Group we value diversity; we pride ourselves on being a company represented by people of all different backgrounds. During hiring, we are committed to ensure equality and promote diversity in the workplace at every selection stage. As such, we provide the same opportunities for all candidates regardless of race, religion or belief, gender, nationality, ethnicity, sexual orientation, age, marital status, disability, or any other characteristic protected under any anti-discrimination law or regulation.
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.
ABOUT US Legora is redefining how legal work gets done. Not built for lawyers, built with them. We work alongside the world’s best legal teams, who expect excellence, precision, and speed, and we hold ourselves to the same bar. Our AI-native workspace lets legal professionals move faster, think more clearly, and operate with sharper precision. By analysing thousands of documents in minutes and powering end-to-end workflows, we cut through complexity, teams can focus on what matters: judgment, strategy, and outcomes. 1,000+ customers across 50+ countries trust us, including Cleary Gottlieb, Goodwin, Linklaters, White & Case, Dentons, and Barclays. We’ve scaled to $100M+ in ARR, with teams across Europe, North America and APAC, and continue to expand through acquisitions including Qura, Walter AI and Graceview. We partner with world-class performers: including Aaron Judge and the New York Yankees, Ludvig Åberg (and his caddie), and campaigns featuring Jude Law. Joining Legora means three things. * We lean in: ownership over titles, outcomes over intentions. * We fight for excellence: high standards, direct, ego-free feedback. * We grow together: as a team and with our customers. Mission before ego. Everyone contributes. No one coasts. If you’re driven by impact, pace, and raising the bar. This is the place. The role As a Senior Backend Engineer at Legora you will build, review and ship amazing products helping legal professionals all over the world in their day-to-day job. You’ll get the chance to work across the entire tech stack with clear ownership and autonomy. What you will be doing: * Architect and implement features for our web platform * Take ownership of our codebase, balancing high-quality code, security and speed of development * Work with technologies such as Node.js, Postgres, Elasticsearch, AWS, Azure and Kubernetes * Review code and mentor junior colleagues to support them in their development, making the team even better! * Drive continuous improvement and challenge us, the industry and yourself * You’ll travel regularly to Stockholm for onboarding, collaboration, and major product milestones — working shoulder-to-shoulder with the team when it matters most. Who you are * A passionate engineer with several years of experience building great products using cutting-edge technologies * You feel comfortable working across the entire tech stack, with focus on backend development * You’re autonomous and take pride in the code you write * You’re a problem solver who’s not afraid to come up with creative solutions and think holistically about software architecture * Experience in infrastructure and integrations are a big plus Legora is an Equal Opportunity Employer At Legora, we believe great teams are built on diversity of thought and experience. We’re proud to be an equal opportunity employer and committed to creating an inclusive, high-performance culture where everyone can do their best work. We welcome people of all backgrounds and don’t discriminate based on race, color, religion, national origin, gender, gender identity or expression, sexual orientation, age, disability, veteran status, or any other characteristic protected by law.