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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer II - **Company:** Búsqueda Avanzada - **Location:** Barcelona, Spain (Remote available) - **Salary:** €75,000.0 - €85,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Application Integration Architecture, C++ (Programming Language), Cloud Engineering, Hardware Security Module, Python (Programming Language), Routing, Oracle (Applications), Public Key Infrastructure, RSA (Cryptosystem), Software Engineering, Data Streaming, System Programming, Delivery Pipeline, Kubernetes Helm Charts, Backend, Containerization, Api Gateway, Data Pipelines, Microservices - **Published:** July 26, 2026 - **Apply:** https://www.adzuna.es/contact-us.html ## About the Role + Core Systems Programming: Professional fluency in Python, Rust, or C/C++ applied to performant backend services, API frameworks, or system microservices. + Cloud-Native AI Frameworks: Practical experience working with high-throughput inference engines and serving frameworks (such as vLLM or KServe) within containerized environments. + Applied Cryptography Essentials: Knowledge of digital certificate management, public key infrastructure (PKI), asymmetric encryption tools (GPG), and transport security protocols (TLS 1.3/mTLS). + Hardware Security Foundations: Conceptual or practical familiarity with Trusted Execution Environments (TEEs), confidential computing isolation, or remote attestation concepts. + DevOps & Automation Agility: Familiarity constructing continuous integration and continuous deployment (CI/CD) automated pipelines, container orchestration scripts, and automated validation frameworks to facilitate continuous software updates. You are motivated by: + Hustle: You inspire others to work as hard as you. You will find a way, no matter how hard the task is. + Ownership: You have an owner/builder mentality. You care about what you deliver and own your mistakes. ## Description We are seeking a highly experienced and motivated developer to join our company. As the Software engineer, you will focus on the cross-layer software development and microservices integration necessary to assemble a highly secure AI inference platform. You will be responsible for wiring multi-module backend layers, establishing stable inference endpoints, and implementing attestation-gated security mechanisms that safeguard critical model weights and execution boundaries within hardware-enforced Trusted Execution Environments (TEEs)., + Multi-Module & Application Integration: Program and stabilize core microservices, bridging backend data pipelines with advanced containerized inference runtimes to ensure seamless data flow. + Secure Endpoint Development: Design, expose, and optimize stable APIs for protected model ingestion, system lifecycle events, and inference requests. + Cryptographic Boundary Assembly: Integrate security sidecars and automated provisioning modules executing asymmetric decryption protocols (e.g., 4096-bit RSA) and cryptographic signature validation to facilitate attestation-gated asset release. + Network & Gateway Routing: Configure low-latency sidecar proxies and API gateways to maintain end-to-end encrypted pathways utilizing strict mutual authentication (mTLS). + Workload Orchestration: Maintain and update cloud-native application configurations (such as Helm charts) to orchestrate isolated container runtimes across distributed execution clusters., + Proactivity: You don't wait for someone to tell you what to do or what problems to solve. You are always looking for ways to learn and improve. + Excellence: You set a high bar and surpass expectations. You hit your goals and ask for more. + Humility: You are not above any task in the organization and are willing to drop what you're doing to help a teammate. What you can expect from us The team: Capacity team members enjoy the opportunity and benefits of working at an artificial intelligence startup, but with leaders who've worked at places like Apple, Ebay, Visa, Answers.com, Oracle, Boeing, and many more world-class companies. The culture at Capacity encourages innovation, independent problem solving, and collaboration as we continue to mature our product in the ever-changing world of AI. We provide: + Private health insurance (with the option, at the employee's expense, to add coverage for couple and children) + Company Profits Interest Units or Profits Interest Units Appreciation Rights eligibility + Flexible compensation options (i.e., meal voucher, transportation voucher, and childcare voucher) + Competitive time off and public holiday policies + A supportive, diverse workplace where we prioritize respect for each other and our clients + A fun, collaborative and growth-oriented team culture ## Related Videos - [Shipping Faster with Less: Render on Cloud Hosting, AI Workloads, and the Future of DevOps](https://www.wearedevelopers.com/videos/1894-shipping-faster-with-less-render-on-cloud-hosting-ai-workloads-and-the-future-of-devops) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Creating a routing app with Google Maps API from scratch](https://www.wearedevelopers.com/videos/831-creating-a-routing-app-with-google-maps-api-from-scratch) - [20 billion requests a week: Upgrading Twilio's API gateway at scale](https://www.wearedevelopers.com/videos/100234-20-billion-requests-a-week-upgrading-twilio-s-api-gateway-at-scale) - [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) ## Related Articles - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Is Software Engineering Hard?](https://www.wearedevelopers.com/magazine/448-is-software-engineering-hard) - [The Ultimate Software Engineer Career Path Guide for 2023](https://www.wearedevelopers.com/magazine/146-the-ultimate-software-engineer-career-path-guide-for-2023)