• Diseñar e implementar microservicios con Java/Quarkus y Node.js o Python, expuestos como APIs REST y arquitecturas event-driven • Configurar y mantener flujos de autenticación y autorización usando Keycloak, OAuth2/OIDC, JWT y mTLS • Gestionar infraestructura sobre AWS: EKS/ECS Fargate, Lambda, DynamoDB, Aurora, ElastiCache, Kinesis, S3, CloudFront y WAF • Construir y mantener SDKs de tracking web/mobile con soporte de batching, reintentos y versionado de eventos • Definir y mantener infraestructura como código con Terraform o CloudFormation; gestionar pipelines CI/CD y estrategias de observabilidad con CloudWatch • Participar activamente en revisiones de código, definición de estándares de seguridad y sesiones de arquitectura • Colaborar con equipos de producto, datos e infraestructura para alinear decisiones técnicas con objetivos de negocio

Role Description As a Senior Backend Engineer at Akkio, you will play an essential role in architecting and building the robust server-side infrastructure that powers our AI-driven data analytics platform. You'll lead technical initiatives for scalable systems that handle large amounts of data and drive innovation in our core backend technologies to help our customers transform how they leverage data throughout the campaign lifecycle. This is a unique opportunity to join a well-funded, early-stage AI startup and shape the future of AI-powered marketing analytics while working with a talented team. You'll be joining at an exciting growth stage, with the chance to make a significant impact on our technical direction and company success. What You'll Do - Lead the design and architecture of backend systems and APIs to support development of customer-facing AI agents. - Take full ownership of complex technical projects from planning to deployment. - Collaborate with engineers, data scientists, and marketing experts to create products that help media agencies achieve their goals. - Build and maintain infrastructure for AI/ML model deployment and inference. - Design and build highly scalable systems that handle large volumes of data processing and analysis. - Drive improvements in system reliability, performance, and scalability to support our growing customer base. - Implement security and compliance measures to protect sensitive client data. - Mentor junior engineers and establish backend engineering best practices. - Create and enforce software development standards, including code quality and testing. - Optimize cloud resource utilization and cost-efficient infrastructure strategies. - Communicate project milestones and progress clearly to stakeholders. Qualifications - 5+ years of backend engineering experience with demonstrated ability to solve complex technical challenges. - Experience building and debugging large scale systems and distributed architectures. - Strong experience writing maintainable, testable, production-grade Python code. - Deep understanding of REST APIs, database design, and complex system architectures. - Strong background with cloud infrastructure (AWS, GCP, and/or Azure) and modern DevOps practices. - Understanding of data processing pipelines, data storage solutions, and analytics architectures. - Experience with performance optimization and scalability challenges. - Strong bias to execution coupled with high engineering standards and attention to detail. - Interest in AI and machine learning (experience a plus, but not required). - Bachelor's degree in Computer Science, Engineering, or related field (or equivalent practical experience). Bonus Points - Strong experience with large language models (LLMs) and their applications in data analytics. - Knowledge of data visualization and analytics tools. - Experience with containerization and orchestration (Docker, Kubernetes). - Understanding of security best practices for handling sensitive data. - Previous startup experience, particularly in early-stage companies. - Familiarity with frontend technologies and full-stack development. Benefits - Health, dental, and vision insurance. - 401(k) plan. - Generous PTO policy. Additional Information - Location: Remote-first company with no central office location. This position is fully remote. - Compensation: Competitive salary range depending on experience, plus substantial equity grants. - Authorization: Must be authorized to work in the US. Akkio is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We are committed to building a team that represents a variety of backgrounds, perspectives, and skills, and we believe that the more inclusive we are, the better our work will be. To all recruitment agencies: Akkio does not accept agency resumes. Please do not forward resumes to our jobs alias or Akkio employees. Akkio is not responsible for any fees related to unsolicited resumes.

Role Description We are currently recruiting a Senior Energy Storage Engineer (m/f/d/x) in Europe to lead and execute a wide range of technical tasks in support of client needs and the continued development of Intertek CEA’s energy storage technical services platform. - Conduct independent engineering reviews and technical due diligence for Battery Energy Storage System (BESS) projects and designs - Develop preliminary engineering drawings, performance models, and technical documentation for ESS projects - Perform energy, economic, and performance analysis, including efficiency, degradation, SoC, auxiliary loads, and C-rate evaluations - Review technical contracts, supplier documentation, warranties, and third-party engineering reports to identify risks and ensure quality compliance - Manage project execution, resource planning, timelines, budgets, and client deliverables across all project phases - Lead on-site inspections, commissioning activities, SAT witnessing, delivery inspections, and QA/QC audits for BESS equipment and systems - Act as an internal technical expert for battery storage systems while supporting thought leadership initiatives such as white papers, presentations, and webinars - Maintain strong industry knowledge and relationships with ESS manufacturers and technology providers to support innovation and internal capability development Qualifications - Bachelor’s degree in engineering or equivalent qualification - Minimum 2 years of experience in large-scale ESS design, modeling, or optimization (10MW+), ideally in solar-plus-storage projects; alternatively 3+ years in battery technology applications, testing, or standards - Strong understanding of electrochemistry, battery technologies, and ESS performance metrics such as round-trip efficiency, degradation, depth of discharge, SoC, and C-rate - Familiarity with key ESS components and integration topics including PCS, EMS, BMS, and overall system architecture - Excellent project management, analytical, organizational, and client communication skills - Ability to prepare high-quality technical reports in English and confidently review complex engineering documents and risk assessments - Proficiency with engineering software tools - Willingness to travel for site inspections and audits, work across global time zones, and comply with on-site PPE requirements Benefits - Our open corporate culture with flat hierarchies offers plenty of room for your ideas - You’ll work in a dynamic team as part of an international company - With flexible flex time and a variety of work schedules, we prioritize the compatibility of family and career as well as your personal work-life balance - Support for sustainable mobility through our Business-Bike program (bicycle, e-bike, pedelec) - Free use of the “meinEAP” counseling services - Access to numerous discounts from our partners through Corporate Benefits - We are committed to diversity and equal opportunity. We value differences, actively promote inclusion, and create an environment that fosters each person’s individuality in the best interests of the company

• You develop and improve features and modules according to our standards. • You assess the feasibility, correctness and validity of requirements. • You review merge requests and provide constructive feedback on logic and style. • You create documentation for key components of our applications. • You analyze sources of errors and ensure sustainable solutions.