English-speaking jobs in Seia

Part-time Tax Representative & Client Advisor needed for growing international firm. 3+ years of Portuguese tax experience, focus on IRS and property taxes, required. Experience with non-residents and Golden Visa clients is a plus. Native Portuguese and fluent English required.

Backend Developer specializing in Laravel to build, maintain, and optimize scalable backend systems, APIs, and databases.

Junior / Associate in Medical Writing to support projects. Draft, edit, and quality-check scientific content. Must have MSc in a scientific field, excellent written and spoken English and Portuguese, and experience in scientific writing. PhD completed or ongoing, or equivalent experience preferred. Remote-first, part-time (25-50% FTE).

Provide administrative support to three C-level executives, managing calendars, coordinating meetings, and handling communications.

As a Presales Solutions Engineer, you will support TeamViewer's commercial business by bridging technical expertise with customer communication. You will deliver product demonstrations, analyze technical requirements, and collaborate with sales teams.

KCS IT seeks a Mid-level QA Tester with 3-5 years of experience. The ideal candidate will have strong knowledge of various testing types, including Functional, Regression, Integration, System, UAT, Exploratory, Smoke, Sanity, and API testing. They will possess a solid understanding of software testing methodologies and the STLC, experience with test case design, execution, and reporting, and proficiency with test management and defect tracking tools (e.g., Jira, TestRail, Zephyr). Fluency in English and Portuguese is required.

Senior ML/Data Ops Engineer II will focus on LLM serving, model management, real-time data engineering, and core infrastructure. Responsibilities include deploying and optimizing large-scale open-weights models, managing model weights in Kubernetes, designing CDC pipelines, and tuning ClickHouse for real-time analytics. Expertise in Linux systems, Kubernetes, Istio, and CI/CD tools is required.

Senior Data Engineer will deliver data work on client engagements, including pipelines, transformation layers, models, and infrastructure. Responsibilities include adapting to different client contexts, defining internal standards for data work, mentoring data engineers, and contributing to proposals. Requires proficiency in SQL, Python, data modeling, transformation architecture, pipeline design, data testing, data observability, CI/CD for data, data governance, cost optimization, and platform fluency.

Axians seeks a Transversal Monitoring Financial Analyst for a national project. The role involves monitoring the portfolio, liaising with stakeholders, assisting with negotiations, and ensuring compliance with financial regulations. The ideal candidate has up to 2 years of experience in banking and financial operations, a bachelor's degree in a relevant field, proficiency in Microsoft Excel, and fluency in English.

Provide accurate and efficient customer support via email and chat. Collaborate with internal teams to resolve issues and identify improvement opportunities. Mentor junior colleagues and contribute to process enhancements.

Repair Technician will disassemble and assemble product components according to defined processes and documentation. Responsibilities include using medical test equipment, tools, and following safety procedures. Requires a High School Diploma or equivalent and strong manual dexterity, attention to detail, and teamwork skills. Intermediate English skills are necessary.

Engineering Manager to lead and develop engineering teams, set technical direction, and ensure technical choices support business goals. Requires 5+ years of backend experience with Java and Spring Boot, strong system design skills, and proven people management experience.

Develop and implement generative AI applications, establish best practices for cloud architectures supporting AI agents, and lead teams of AI specialists.

Develop and operate a scalable, multi-tenant AI agent mesh. Integrate and deploy foundation models and design intelligent backend components for context management, RAG, and agentic collaboration.

Senior Design Systems Designer will contribute to scaling Agoda's design system, developing and maintaining components, and collaborating with cross-functional teams to improve product efficiency and quality.

Provide player support for over 1,000 games developers globally. Manage social media channels, respond to game issues, and collaborate with community managers.

Project Manager to lead and manage end-to-end delivery of risk assurance and fraud management solutions. Develop project plans, coordinate cross-functional teams, and ensure successful project completion within scope, budget, and timeline.

Java developer to design, build, and maintain efficient, reusable Java applications. Responsibilities include translating storyboards and use cases into functional applications, ensuring application performance, and identifying and resolving bugs. Proficiency in Java, object-oriented programming, and design patterns is required. Experience with AWS, Spring, Redis, SQL, and ElasticSearch is a plus.

Civil Construction Engineer needed for a 6-8 month project (potential extension) at an industrial site. Responsibilities include coordinating construction, reviewing documentation, and managing subcontractors. Must have a Civil Engineering degree, 2+ years of experience, fluency in Portuguese or Spanish, and eligibility to work in Portugal.

Experienced Project Managers needed for Telecommunications projects in Lisbon or Porto. Plan, execute, and deliver projects within scope, budget, and schedule. Manage cross-functional teams, identify risks, and ensure project compliance.