Senior Front-End Developer, Engineering (Vue)

Echo Base

Portugal Remote contract

Posted: November 7, 2025

Required Skills

Job Description

About Echo Base

Echo Base is a privately funded investment platform focused on special situations and strategic opportunities within the digital asset ecosystem. We acquire, finance, and build companies where our operational expertise and capital can unlock outsized value. Our team combines institutional investment discipline with crypto-native insight to identify and execute on complex opportunities across the industry’s most dynamic segments.

The Role

The Mid/Senior Software Engineer is a seasoned professional with at least 4 years of experience in software development. Specialized in finance or crypto within the technology industry, this individual excels in leading problem-solving, driving coding excellence, ensuring comprehensive testing, and adopting scalable and secure software implementations for solutions in areas like trading, swapping, regulatory compliance, fraud detection, automation, and more.

What You’ll Do

As a Senior Front-End Engineer on our core engineering team, you will:

• Take end-to-end ownership of features (frontend, API frontend integration, deployment)
• Improve, maintain, and scale existing services
• Build UI/UX integrations (web dashboard, realtime charts, notifications) together with product / design teams
• Ensure system security and correctness (authentication, authorization, encryption, safe handling of keys / wallets)

What We’re Looking For

• A comprehensive grasp of Crypto and Crypto Trading.
• Excellent analytical, critical thinking, and problem-solving skills in financial technology contexts.
• Outstanding testing practices, TDD, unit, integration, e2e testing, (Jest, Vitest or similar frameworks)
• Strong communication skills and an ability to collaborate cross-functionally with product, engineering, and other departments.
• Able to explain technical concepts to both technical and non-technical stakeholders.
• Must be located in the Americas or Europe (between time zones UTC-5 and UTC+3).

• Solid track record of over 3 years demonstrating mastery of Javascript/Typescript and frontend frameworks (React, Vue3), mainly in production applications.
• Solid experience in debugging and optimizing the performance of web applications for multiple browsers and viewports, as well as PWAs.
• Knowledge of software for interface prototyping and wireframing like Figma.
• Understanding of Git and branching models for coordination with team members.

Preferred / Bonus:

• Past experience in crypto / fintech / trading systems
• Knowledge of React (frontend framework)
• Experience interacting with blockchain / smart contracts / wallets / DeFi systems
• Experience with containerization / orchestration (Docker, Kubernetes)
• Experience with CI/CD pipelines, DevOps knowledge
• Experience in microservices / domain-driven design, event-driven architectures
• Familiarity with network security, traffic encryption, and authentication protocols.
• Experience in other programming languages like Golang and Java are highly valued.

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