Senior Backend Developer (x,f,m)

DKB Code Factory

Welcome to DKB Code Factory….  { { … a_place_to_stay_yourself: } } ;  { { … a_place_to_stay_curious: Curious about building the future of mobile banking? At DKB Code Factory, we put human needs at the top of our backlog. As a a Senior iOS Developer, you’ll own building secure, performant payment experiences that customers rely on every day. Working in a collaborative, agile team, your craftsmanship and responsibility will directly shape the stability and trust of a core banking product used by millions. Join us to build technology that truly serves people, with the autonomy and support to grow continuously } } ;  { YOUR_RESPONSIBILITIES: [ * Design, develop, and maintain a performant and maintainable iOS application using Swift and SwiftUI.  * Establish scalable architecture and reusable design patterns aligned with platform standards.  * Lead the migration of existing UIKit-based components and screens to SwiftUI, ensuring consistency, performance, and maintainability.  * Take full ownership of features end-to-end, driving the design and implementation of user flows, proactively collaborating with Backend, Product, and other stakeholders with a high degree of autonomy.  * Collaborate closely with Product, Design, Backend, QA, and DevOps teams in a cross-functional setup.  * Deliver prioritized MVP features and iterate based on real user feedback.  * Mentor other developers and contribute to code quality through reviews and best practices.  * Ensure high code quality, test coverage, and adherence to accessibility and performance standards.  ] } ; { following_qualifications_would_be_in_line_with_our_desired_profile_for_this_position: [ * Proven experience in iOS development with strong expertise in Swift and SwiftUI.  * Solid understanding of scalable architecture, state management, and backend integration.  * Strong collaboration and communication skills in a cross-functional team environment.  * Proactive mindset with attention to detail and ownership of deliverables.  * Ability to mentor and support junior team members.  * Experience with CI/CD, unit testing, and automated testing frameworks is nice to have.  * Comfortable working in a Independently while maintaining a dynamic, growing team with evolving requirements.  * Fluent in English (primary working language).    ] } ; Have the feeling you don't match every single requirement? Don’t worry! We encourage you to apply anyways, even if your qualifications do not align perfectly. You might still be just the right candidate for us! { { … a_place_to_stay_together: From Morning Daily to Afterwork Drink, team spirit is essential to us. The heart of our togetherness is that we truly are connected with each other: We not only share fun & laughter, but also honest opinions - because that's how we grow: We exchange ideas, give support in our personal development, and celebrate success together! Besides our great community, we also offer numerous other benefits...  } } ;

Doctolib

We are looking for an Engineering Manager to join the OREO (Observability Reliability Engineering Obsession) team in Platform Engineering. As an Engineering Manager, your mission will be to lead the Reliability & Observability team and drive the evolution of Doctolib's observability platform, supporting the exponential growth of Doctolib services while building and empowering a world-class SRE team. Working in the tech team at Doctolib involves building innovative products and features to improve the daily lives of care teams and patients. We work in feature teams in an agile environment, while collaborating with product, design, and business teams. You will lead a team of Site Reliability Engineers who are responsible for shaping Doctolib's observability strategy and ensuring our platform remains reliable, debuggable, and scalable. This role sits at the intersection of people management, technical leadership, and strategic planning with a particular focus on building organizational capabilities around logging, metrics, tracing, and alerting. Your team also owns and operates critical transversal services that enable secure, scalable infrastructure management across the organization, including HashiCorp Vault for secrets management and Terraform Enterprise for infrastructure as code. Your responsibilities include but are not limited to:   People Leadership: * Lead, coach, and grow a team of Site Reliability Engineers, supporting their technical development and career progression * Create a culture of operational excellence, continuous improvement, and psychological safety within the team * Conduct regular 1:1s, performance reviews, and career development conversations * Recruit, onboard, and retain top SRE talent aligned with Doctolib's mission and values Technical Strategy: * Partner with SREs and senior engineers to define and evolve the observability strategy across the platform, focusing on logging, metrics, tracing, and alerting * Own the strategy and evolution of critical transversal services including HashiCorp Vault and Terraform Enterprise * Drive prioritization and roadmap planning for large-scale reliability and observability initiatives * Ensure alignment between team objectives and broader engineering and business goals * Advocate for and allocate resources toward reducing technical debt and improving developer experience Operational Excellence: * Own the team's on-call experience and contribute to the incident response processes, ensuring sustainable practices and continuous improvement * Ensure high availability and reliability of transversal services that are critical to the entire engineering organization * Lead postmortem reviews and drive systemic improvements to prevent recurring issues Cross-functional Collaboration: * Work closely with Product Managers, Engineering Managers, and architects to align observability capabilities with product and platform needs * Partner with security and infrastructure teams to evolve secrets management and IaC practices across the organization * Represent the OREO team in engineering leadership forums, architectural reviews, and strategic planning sessions * Foster strong partnerships with software engineering teams to improve instrumentation quality and adoption of observability best practices ABOUT OUR TECH ENVIRONMENT * Our solutions are built on a single fully cloud-native platform that supports web and mobile app interfaces, multiple languages, and is adapted to the country and healthcare specialty requirements. To address these challenges, we are modularizing our platform run in a distributed architecture through reusable components. * Our stack is composed of Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native. * We leverage AI ethically across our products to empower patients and health professionals. Discover our AI vision here and learn about our first AI hackathon here! WHO YOU ARE Before you read on — if you don't have the exact profile described below, but you feel this job description matches your skill set, we still encourage you to apply. * You have at least 5+ years of software engineering or SRE experience, with a strong technical background in cloud-native environments (preferably AWS, GCP, and/or Kubernetes-based) * You have 3+ years of engineering management experience, leading technical teams (ideally SRE, platform, or infrastructure teams) * You have deep understanding of observability tooling and architecture (Fluent Bit, OpenTelemetry, Loki, Elasticsearch, Prometheus, Thanos, Datadog) * You have experience with infrastructure as code (Terraform, OpenTofu) and secrets management systems (Vault, AWS Secrets Manager) * You have proven ability to balance technical depth with people leadership, able to mentor engineers, review technical designs, and guide architectural decisions Now it would be fantastic if you: * Have experience scaling SRE or platform teams in fast-growing, high-traffic environments * Have background in designing and operating high-scale telemetry pipelines * Have hands-on experience with HashiCorp Vault and Terraform Enterprise in production environments * Have hands-on experience with backend programming languages (e.g., Go, Python, Ruby) * Have experience driving cultural and technical transformations WHAT WE OFFER * Free comprehensive health insurance for you and your children * ParentCare Program: Enjoy full salary coverage (100%) during your first month of birth leave, and 75% during the second, covered by Doctolib * Free mental health and coaching services through our partner Moka.care * For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support * Work from EU countries and the UK for up to 10 days per year, thanks to our flexibility days policy * Work Council subsidy to refund part of sport club membership or creative class * Up to 14 days of RTT * A subsidy from the work council to refund part of the membership to a sport club or a creative class * Lunch voucher with Swile card THE INTERVIEW PROCESS * 30-min phone screen with a Tech Recruiter * 1h30 technical interview (SRE System Design & Architecture) * 1h15 behavioral interview (Leadership & People Management) * 1h30 Engineering Management case study (team scenarios, prioritization, and conflict resolution) * 1h manager interview with Senior Engineering Leadership * At least one reference check JOB DETAILS * Permanent position * Full-time * Berlin * Start date: as soon as possible If you would like to find out more about tech life at Doctolib, feel free to read our latest Medium blog articles! At Doctolib, we are committed to improving access to healthcare for everyone. This translates into our recruitment process. We evaluate candidates based solely on qualifications and motivation, without any form of discrimination. The more diverse ideas are heard, the more our product will truly improve healthcare for all. You are welcome to apply to Doctolib, regardless of your gender, religion, age, sexual orientation, ethnicity, disability. To ensure equal opportunities, we invite you to exclude personal information (e.g. pictures, age) from your applications. If you require any accommodation, please let us know for support during the hiring process. Join us in building the healthcare we all dream of! All information provided is processed by Doctolib for application management. For data processing details, click here. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.

Sumup

SENIOR BACKEND ENGINEER — GLOBAL EXPANSION ABOUT THE TEAM The Global Expansion Acquiring Squad is the engine behind SumUp's growth into new markets — integrating local payment acquirers, enabling merchant onboarding, and ensuring transactions flow reliably across countries like Mexico, Canada, New Zealand, and Australia. This role sits at the heart of that mission, owning critical backend systems while also shaping how the squad works — building AI agents and developer tooling that make the entire team faster and smarter. If you're a backend engineer who wants real ownership, enjoys working in ambiguous and complex environments, and is genuinely excited about teaching AI how your codebase works (not just using it for autocomplete), this role is for you. WHAT YOU'LL DO * Design and build scalable backend services in Golang and Kotlin, covering merchant onboarding, transaction processing, and reconciliation across multiple acquirers and markets * Lead technical investigations for new market launches and mentor engineers on the team * Configure and maintain AI coding assistants (Cursor, Copilot, Continue) with team-specific rules, framework conventions, and testing patterns — so generated code fits our systems, not generic templates * Build AI agents that automate repetitive development tasks, such as generating integration stubs, updating OpenAPI specs, and flagging idempotency violations * Keep documentation accurate and AI-accessible, so the team spends less time answering "how does X work?" and more time shipping YOU'LL BE GREAT FOR THIS ROLE IF… * Strong proficiency in Golang (primary) or a JVM language such as Java or Kotlin, with experience building distributed, fault-tolerant backend systems * Experience configuring AI coding assistants at a team level — defining rules, prompts, and context packages that produce consistent, framework-compliant output * Solid understanding of idempotency, retry policies, and transaction safety in payment or financial systems * Comfort working across multiple teams and domains simultaneously, navigating ambiguity and influencing without direct authority * A track record of taking ownership in complex, cross-functional environments where the scope isn't always clearly defined WHY YOU SHOULD JOIN SUMUP * 🌎 Opportunity to work with SumUppers globally on large-scale fintech products used by millions of businesses worldwide, from our Berlin office. This involves an office-first 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 €2,000 for your individual development, which can be used to attend conferences and/or advance your career through further education * 💶 A corporate pension scheme where we match up to 20% of your contributions * 🏖️ Generous time off: enjoy 28 days of paid leave plus public holidays and special leave days * 🏋️ Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, subsidised office lunches * 🌴 Break4me: 1-month sabbatical after 3 years of service * 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team ABOUT SUMUP Be empowered to do more that matters. At SumUp, we're on a mission to empower small businesses across the globe by providing simple and affordable tools that allow them to thrive. Today, over 4 million businesses in 37 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships. Our commitment to small businesses is reflected in our diverse team of over 3,000 SumUppers from over 90 nationalities, united by global collaboration and an innovative mindset. Our core values lay the foundation for who we are and what we stand for, shaping our work culture and driving our success. We foster inclusivity and a continuous learning culture, providing a safe space for personal and professional growth. Our differences make us unique and strong as we strive to create an environment where everyone belongs and feels supported, no matter how they identify. SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't make hiring or employment decisions based on race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited. Discover more about our culture and opportunities on our careers website, and follow our journey on LinkedIn, Instagram, and TikTok. 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.