Staff / Principal Software Engineer, Security

Lovable

TL;DR: We're seeking exceptional senior engineers and technical leaders for our Platform team, who own the infrastructure that powers Lovable's AI product and the developer experience that lets our engineering teams move at maximum velocity. Why Lovable? Lovable lets anyone and everyone build software with any language. From solopreneurs to Fortune 100 teams, millions of people use Lovable to transform raw ideas into real products - fast. We are at the forefront of a foundational shift in software creation, which means you have an unprecedented opportunity to change the way the digital world works. Lovable-built applications and websites are visited hundreds of millions of times a month, and our enterprise footprint is compounding fast. And we’re just getting started. We’re a small, talent-dense team building a generation-defining company from Stockholm. We value extreme ownership, high velocity, and low-ego collaboration. We seek out people who care deeply, ship fast, and are eager to make a dent in the world. What we’re looking for * 10+ years in platform, infrastructure, or developer experience engineering, with a track record operating at senior engineering levels. * Deep experience building and operating in one or more of: production infrastructure, platform engineering, or developer experience (observability, CI/CD, application frameworks, productivity tooling). * Strong proficiency in at least one systems-oriented language (Go, Rust, C++, or similar), with a track record of designing high-throughput services at scale — and/or experience writing code and tools to support growing engineering orgs in scale-ups. * Solid working knowledge of Docker, Kubernetes, and modern infrastructure practices; ideally with understanding that goes deeper than configuration — how schedulers, runtimes, and isolation boundaries actually work * You ship high-leverage systems fast and know when to make trade-offs between security, stability, and speed. * You're comfortable navigating ambiguity and driving clarity at an organisational level, not just technically. * You're based in Stockholm or ready to relocate — this is an on-site, 5-days-a-week role. What you’ll do In one sentence: We build and own the systems and developer platform that make AI engineering work and keep our engineering teams the most productive in the world. * Design, build and maintain the core systems that enable our AI product, including a gVisor-based runtime for agentic workloads and a high-throughput sandbox scheduler across multiple cloud providers. * Bring order and structure to our codebase; integrate or build application frameworks to support a growing engineering organisation. * Own and develop our observability stack, from code instrumentation through ingestion to presentation. * Harden our infrastructure against failures, downtime, and slowdowns — ensuring it never becomes a bottleneck to growth. * Plan and implement our network infrastructure and cloud strategy. * Integrate tools for AI-driven development across the engineering org. * Identify and drive reliability improvement efforts across all engineering teams. Our tech stack We're building with tools that both humans and AI love. Lovable platform engineers are capable of working across the whole stack. Examples of tech in our stack include: * Frontend: React and Typescript. * Backend: Golang and Rust. * Cloud: Cloudflare, GCP, AWS. * Data: Clickhouse, Firestore, Spanner, BigQuery. * DevOps Tooling: CI/CD pipelines, OTEL, Grafana, kubernetes, terraform. * Local Tooling: Nix, DevEnv. And always on the lookout for what's next! About your application Please submit your application in English. It’s our company language, so you’ll be speaking lots of it if you join. We treat all candidates equally - if you’re interested, please apply through our careers portal.

Epidemic Sound

JOIN OUR GLOBAL FORCE OF 400+ INNOVATORS, BLENDING THE LATEST IN TECH WITH THE GREATEST IN SOUNDTRACKING, FROM OUR STOCKHOLM HQ TO OFFICES IN LONDON, NEW YORK, LOS ANGELES, BERLIN, PARIS, OSLO, AND SEOUL. WE’RE AN INDUSTRY LEADER WITH A STARTUP MENTALITY. WE TAKE WHAT WE DO SERIOUSLY, BUT WE DON’T TAKE OURSELVES TOO SERIOUSLY. CREATING AND COLLABORATING TO TRANSFORM THE SOUND OF STREAMING, CONTENT, AND CULTURE. COME JOIN US, AND LET THE WORLD FEEL YOUR WORK. We're Looking For a Staff Software Engineer – AI & Automation We're building a new Productivity Engineering team, and you'll be the founding engineer of an internal platform that lets non-engineers build, deploy, and host agents and applications. This means your decisions will shape the architecture, the developer experience, and the culture of the team for years to come. YOUR KEY RESPONSIBILITIES INCLUDE: Operating with an AI-first mindset, you will leverage AI, agents and technical logic to: * Architect and build the foundational platform that enables business users across the organisation to create, deploy, and manage internal applications and agents without requiring engineering support. * Own the end-to-end design of this platform, from infrastructure and hosting to the self-service interfaces and guardrails that make it safe and approachable for non-technical users. * Establish the patterns, integrations, and building blocks that connect to core enterprise systems and allow business teams to move quickly without compromising security or compliance. * Work closely with business stakeholders to translate operational needs into platform capabilities, ensuring the systems you build are not only technically sound but genuinely adopted. * Operate as a senior technical voice within a small, high-autonomy team, helping set architectural direction and raising the bar for how the team designs and delivers. REQUIREMENTS & TECHNICAL COMPETENCE * The Blueprint: Extensive track record as a Senior, Staff, or Principal Engineer, with a proven history of owning greenfield platforms, distributed systems, and backend scalability patterns. * Infrastructure & Platform: Deep production-scale GCP (compute, networking, IAM, managed services), Kubernetes, and Helm (designing for multi-tenancy). * Languages: Proficient in Go (primary), with comfort across the stack in TypeScript and/or Python. * Developer Experience (DX): Hands-on experience with GitOps, environment provisioning, infrastructure-as-code (Terraform), and enterprise security/IAM (SSO/Okta integration). * AI Integration: Experience integrating LLMs and agentic systems into production backends (Vertex AI, Gemini, OpenAI, MCP, or similar). * Product Mindset: Strong understanding of API design and a proven ability to design for non-technical users—you care about onboarding, UX, documentation, and what "easy to use" means in practice. Way of Working: Highly autonomous, comfortable with high ambiguity, and able to clearly present technical trade-offs to non-engineering stakeholders. Equal opportunity employer We believe that bringing people together from different backgrounds, experiences and perspectives makes for a healthy workplace, a more successful business and a better world. We value diversity and encourage everyone to come and soundtrack the world with us. Application Ready to make the world feel your work? Please apply, in English.

Rebtel Networks AB

Global migration is a 21st-century reality. Whether people are fleeing from something or racing towards better opportunity, following love or seeking new experiences, more and more are living in different environments and in new ways. We celebrate the power of people coming together. That’s why we connect ambitious people abroad with their families and friends back home so they can support each other emotionally and financially, and lead more enriched lives. Why Rebtel? When you join Rebtel, you become part of a global team, bringing together diverse minds from every corner of the world. Our headquarter is nestled in Stockholm and here we strike a balance between dedicated work and more relaxed activities. Every Friday the unmistakable aroma of freshly popped popcorn fills the air, but our celebrations encompass everything from minor and major common accomplishments to cinnamon bun day. What will you do? As a Staff .NET Developer at Rebtel you will serve as the technical guardian and principal individual contributor for the entire Backend (BE) architecture and ecosystem. This role is crucial for ensuring the technical excellence, scalability, reliability, and security of all backend systems that power our core products and services. The Staff Software Engineer will operate at a high level of abstraction, influencing engineering practices across multiple teams while remaining hands-on in critical areas. You’ll be actively involved in architectural decisions, contribute to technical discussions, and inspire your team to deliver clean, robust code. Responsibilities and Tasks: Lead the design, development, and deployment of complex, high-throughput backend services and APIs, ensuring best-in-class performance and maintainability. Drive architectural decisions and serve as the ultimate technical escalation point for BE-related challenges. Establish and articulate a clear, ambitious long-term vision and technical roadmap for the evolution of the BE systems. This includes planning for future growth, anticipating technological shifts, and driving the adoption of new technologies and patterns to maintain a competitive edge. Act as the primary architect for major system initiatives, defining microservices boundaries, data models, integration patterns, and deployment strategies. Proactively identify and resolve technical debt and architectural risks before they impact the business. Mentor engineers, elevating the technical expertise and quality of engineering output across the organization. Influence engineering standards and best practices for testing, performance tuning, and security across different development teams. Requirements: Exceptional and proven proficiency in the .NET area, including extensive experience with C#, .NET Core/8+, and related frameworks (e.g., ASP. NET Core, Entity Framework Core). Must demonstrate the ability to architect and build high-performance, fault-tolerant systems using the .NET stack. Demonstrable architecting skills with a strong background in designing and implementing large-scale, distributed systems (e.g., microservices, event-driven architectures, serverless). Expert knowledge of design patterns, domain-driven design (DDD), and SOLID principles. Extensive experience with at least one major cloud platform (AWS, Azure, or GCP) and related services (e.g., managed databases, message queues, containerization). Deep understanding of various database technologies (SQL and NoSQL) and data modeling best practices for scalable applications. System-Level Thinking: Ability to decompose complex problems into manageable components and evaluate trade-offs between different technical solutions (e.g., speed vs. stability, buy vs. build). Excellent verbal and written communication skills, with the ability to present complex technical ideas clearly to both technical and non-technical stakeholders, driving consensus on critical architectural decisions. Our Offer To You At Rebtel, you are the most important asset and we strive to provide a comprehensive package of benefits and perks that enhance your well-being and work experience. Here are some of the things you can expect from us: Pension Plan Health Checkups, Influenza shots and Private Medical Insurance Occupational insurance Wellness allowance (5,000 SEK) Discount on gym memberships Bonus program Extra parental pay 30 days annual vacation Monday breakfasts, dinner if staying in the office past regular working hours Relocation Support, if you're joining us from afar, we'll assist you in making a smooth transition. Rebtel is an international workplace, and at the office, we speak English; therefore, high English proficiency is required. We are Rebtel. We come from all around the world to create products for anyone who has crossed a border. We believe in equal opportunity and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.