Staff Software Engineer - Onsite Messaging

We love elegant code, and we hope you do too. We look forward to seeing your craft grow and make a difference to our rapidly expanding platform. Sellpy's vision is to empower everyone to live circularly. We believe that every item deserves a second life, and we see huge value in making sure this happens. We look for those who share this vision and have the grit to tackle the challenges of building a circular future. Junior Software Engineer at Sellpy Sellpy's catalogue holds 10 million one-of-a-kind items — and our systems must handle every single one in real-time. As a Junior Software Engineer, you'll step into a place where your code ships to production early, your ideas are heard from day one, and the problems you solve have genuine environmental impact. We're coding for a circular future in an environment where discussions are encouraged, every voice contributes to our architecture, and curiosity and craft are valued equally — from day one. In short, you will * Build and ship features across the full stack, from frontend interfaces to backend services. * Work with JavaScript, React/React Native and Node.js. * Take end-to-end ownership of features — from design through deployment. * Grow rapidly with the support of experienced teammates and direct feedback loops. * Contribute to keeping Sellpy's architecture clean, maintainable and scalable. * Bring fresh perspectives that push our engineering culture forward. Requirements * Currently pursuing or recently completed a B.S. or M.S. in Computer Science or a related technical field. * Graduating in summer 2026, or 2027. * Solid understanding of JavaScript or another modern programming language. * Genuine curiosity, drive to learn, and an action-oriented attitude. We’d be impressed if you have * Familiarity with React, Node.js, or similar modern frameworks. * Experience from side projects, internships, or open source contributions. * Exposure to CI/CD pipelines and version control with Git. * A passion for the circular economy or sustainable tech. YOU GET TO * Be part of a tech-minded company driving the change towards a sustainable lifestyle. In return, you'll get direction, energy, and meaningful challenges from day one. * Enjoy a vibrant office culture at Medborgarplatsen, balanced with hands-on experience at our production sites * Work with highly skilled and motivated colleagues who invest in your growth. * Gain new skills with unlimited access to a learning platform. * Make use of prepaid vacation. * Enjoy Sellpy credits and staff discounts at Sellpy and the H&M brands (Arket, COS, Other Stories, Weekday and more). * Save up with a monthly pension plan. * Engage in Sellpy’s social traditions with game nights, interactive planning days, guest speakers and other activities. LOCATION On-site collaboration at our core, supported by a flexible hybrid setup on set days. This role is based at our Medborgarplatsen office. Hybrid work We value being together. After an on-site onboarding, we aim for a balanced office presence, with flexibility on set days. Form of employment: Full-time Start: As agreed upon Please note that due to the summer holiday period, our recruitment process may take a little longer than usual. We truly appreciate your patience and will get back to you as soon as possible.

For our customers, we are looking for several SecOps Engineers. Are you ready for new challenges in 2026? We look forward to receiving your application. Overall objective of role:                             Our business is in a constant journey of change and digitalization where security is a high priority.    The SecOps Engineer has a key role in protecting the company’s computers, mobile devices, IoT devices, networks, software, hardware, platforms and data from malware and cyber-attacks whether these components exist on-site or in the cloud. Essentially to oversee the design and development of the IT infrastructure and security standards.   As a SecOps Engineer, you will develop and raise the organization's level of IT security and contribute to greater resilience in security.  Primarily, the role has a tactical focus but also has elements of both operational and strategic tasks.     Primary responsibilities:   You will have a key role in IT security, risk exposure, and IT security incident management.   You will work closely with and have the support of the business stake holders such as, but not limited to, CIO, CTO, CFO, Manager IT Operations and Head of IT Development as well as partners / service providers and other resource support in the security area.  You will hold service responsibility for maintaining and developing our IT security capabilities and interaction with service providers of IT security products.  You will have the responsibility for the contact and relationship with external Security Operations Center and the IT security incident process.    You will be working with and keeping track of the company cybersecurity roadmap both long- and short-term in the area.  Responsible for the IT security domain within the IT Architecture Council in review and decisions regarding IT security architecture.    Work tasks:    * Describe and review the IT cybersecurity architecture and support in strategic path choices and analyses  * Be an advisor and act as a SME within the IT organization and actively support IT architects, service owners, developers and stakeholders with IT security expertise and convey security requirements, principles and guidance in architecture and design  * Support in risk assessments and supplier assessments related to IT security  * Take a leading role and actively drive improvements in the field IT security  * Anchoring the security work and ensuring that the users within the organization understand and follow our rules and regulations within the area of IT security  * Be responsible for the prevention of IT security risks and follow-up of incidents  * Coordinate initiatives, measures and implementation of security solutions to ensure that all systems meet requirements from an IT security perspective  * Assist with external monitoring in the area of IT security and contribute with IT security expertise in cooperation forums with other organizations, partners and vendors.  * Liaise with Head of Legal for collaboration of activities related to GDPR responsibilities that lies on IT    Key responsibilities:    Key areas of responsibility include (but are not limited to):     * Develop and drive the security roadmap, including prioritization of most important for customer.   * Be familiar with and able to work in an operational “hands-on” as well as in a security architecture role, and work closely with stakeholders.   * Planning, updating, and maintenance of the security measures, defenses and counteractions to stop and avoid internal and external occurrences.   * Manage penetration testing of both applications and infrastructure   * Perform susceptibility scans and manage the resolution of threats as well as continuously evaluate techniques for how to handle Phishing, Spoofing, etc   * Assess software as a service (SaaS) product for security compliance   * Manage security applications   * Conduct periodic user access control verifications as well as evaluate existing solutions for MFA, e.g. YubiKey, Apple Passkey etc  * Develop and maintain security monitoring, logging, and auditing   * Install required security patches and updates for a wide range of applications   * Monitor system security relating to resiliency, malware intrusion, and patching   * Assess technical controls and identify areas of improvement   * Serve as technical security lead   * Conduct systems testing to ensure that critical vulnerabilities become identified   * Be updated on the latest within the area of cyber threats, etc, and evaluate how to best protect the company resources   * Create and maintain a Business Continuity Plan (BCP)   * Responsible for our SOC-work, EDR, XDR, NDR, etc   * Deliver and adopt according to the IT Service Delivery Management and IT Operations life cycle   * Change, release and deploy management life cycle is adopted and followed.  * Participate in Incident Management, Problem and Change Management  * Help automate and streamline our operations and processes  * Develop and maintain scripts for automation and monitoring  * Hybrid and cloud infrastructural components such as general compute services, VPC, PKI Management, Networking, Storage services, security systems, communication systems, and backup operations   * Proactively maintain and monitor delivered IT systems and related services  * Ensure all servers and related workloads have required security compliance for patch management, anti-malware, and other threat protections applied and up-to-date  * Work collaboratively with other operations staff, development and service delivery teams to ensure critical L.O.B. systems and services are available 24 x 7 x 365  * Works closely with NOC and SOC as an escalation tier for customer support and for operative production cases  * Identify, categorize and respond to Network, Security & Compute system events and alerts  * Record, track, follow-up and maintain documentation of systems and the ITSM processes  * Engage with hardware and software vendors and suppliers as needed  * Ensure that the business (customer) expectations are met or exceeded  * Fulfil individual SMART goals and KPI’s through everyday work.  * Perform internal audits and auditable evidence of internal audits for non-technical areas  * Monitor, verify, measure delivered services and solutions from suppliers and partners  * Review survey feedback to improve delivered services, SLA’s, tools and support experience.  * Perform backup and restore operations  * Be part of Line of Business-related projects  * Possible rotate in on-call rotation  * Mentor junior employees within the function  * Adhere to policies, procedures and routines    Experience:    * +5 years of operational experience in IT security field(s)    Skills, qualifications, and knowledge needed:    * Degree in Computer science or equivalent    * Self-motivated   * Natural ability to influence and build trust    * Team player    * Capability in anti-malware software, interruption recognition, firewalls, and content filters   * Knowledge about threat assessment tools, skills, and procedures   * Highly organized with attention to details    * Strong problem-solver with a pragmatic approach   * Strong verbal and written communication skills   * Professional fluency in English, both writing and speaking   * IT order management, procurement and project coordination  * Advanced knowledge and experience of managing, monitoring and supporting a multi hybrid cloud compute IT infrastructure environment  * O365 Administration (Exchange, Teams, SharePoint, OneDrive etc)  * Advanced knowledge and experience working with different kind of anti-malware and threat protection services  * Advanced knowledge and experience working with user and service catalog services such as Active Directory and Azure AD  * Experience working with Identity Access Management and SSO  * Experience working with Enterprise Mobility and Device Management  * Advanced knowledge and experience working with datacom and networking services  * Advanced knowledge and experiencing working with backup and restore operation services  * Skilled with PowerShell scripting  * Advanced knowledge of and experience supporting PCs and Macs within Microsoft network and Office 365 environment  * Microsoft Azure services and AWS  * Microsoft SQL Server, IIS  * Experience with modern ITSM processes and techniques.   * DNS & PKI Management  * General knowledge and experience working with multi-platform environments such as Windows Client and Server OS, Mac OS X and mobile devices based on iOS/Android      Advantages:    Meriting with knowledge in:  * Microsoft certifications is a plus.  * Meriting with ITIL certification  * Meriting working with O365 Defender, Defender for Endpoints  * Meriting working with public cloud services such as GCP and AWS  * Meriting with Cisco Meraki, Fortinet solutions  * Meriting with ServiceNow and AzureDevOps tooling  * Retail, wholesale, e-commerce or logistics business flows.  * Fashion industry.