Top Tech Jobs & Startup Jobs in Spain

Create expert-level Brazilian Portuguese questions and ideal answers in Law & Ethics, produce individually cited fact breakdowns with sources, using LLMs only for research support. Remote freelance engagement (~60 hours over two months) requiring PhD-level expertise.

Design and develop cloud-native backend services in Rust to process terabytes of data daily. Build and operate data-intensive microservices on AWS and Kubernetes, integrate with distributed databases and messaging systems (Kafka/RabbitMQ), and collaborate across teams to deliver observability features.

Lead design, develop, and maintain Piktochart's backend systems for scalability, performance, and security. Collaborate with product, design, and frontend teams, optimize databases and queries, conduct code reviews, evaluate new technologies, and mentor developers while integrating AI agents and improving CI/CD and cloud infrastructure.

Manage daily client relationships, translate business challenges into briefs, coordinate with strategy, creative and production teams, support idea development, manage timelines and deliverables, and identify opportunities to expand client work.

Generate accurate invoices, track and apply payments, follow up on overdue accounts, reconcile customer balances, resolve discrepancies, and prepare regular AR aging and collection reports to support financial planning.

Lead development strategy and lifecycle management of VAS/policy control platforms (PCRF), introduce new services from requirements to deployment, engage vendors and tenders, coordinate hardware/software delivery, provide architecture guidance, and support maintenance and complex production changes across LTE/5G networks.

Lead schedule processes, risk analysis and tools for a data center portfolio. Maintain templates, approve game plans, supervise schedule analysts, develop mass-update tools and reporting, coordinate with procurement/PRMs/BI/Clarizen teams, run campus-level reviews, and train stakeholders to mitigate schedule risks and ensure Day 1 readiness.

Design, modernize and operate large-scale VoIP telephony infrastructure. Integrate carriers, build inbound/outbound call systems, optimize cost and resources, ensure reliability/scaling, develop integrations with AI platform, and provide 2nd/3rd level support and on-call rotation.

Lead the engineering organization through significant growth, define technical vision, introduce scalable processes, and align hiring strategies. Drive cross-team collaboration and improve engineering health and efficiency while coaching managers and engineers in a remote, dynamic environment.

Manage and maintain HubSpot as the single source of truth: data integrity, deduplication, custom properties, and lifecycle stages. Build workflows, sequences, and automations; coordinate pipeline updates with origination and partner teams. Produce funnel reports and dashboards, manage list segmentation and campaign audiences, and support member onboarding flows.