Fullstack or Backend Developer İstanbul - Remote Full-Time

Fimple is a product company focused on building a cloud-native, highly composable, and extendible platform designed to meet the end-to-end requirements of digital, disruptive, and new-entrant financial players seeking agility. We provide a modern, API-first, extensible platform with strong ecosystem and marketplace capabilities, enabling financial institutions to scale and evolve rapidly in a dynamic market. We are looking for a Full Stack Developer or Backend Developer with strong software engineering fundamentals, hands-on experience in both backend and frontend development, and prior exposure to the banking or financial services domain. You will play a key role in building and maintaining high-performance, scalable applications that power next-generation digital banking experiences. This role is fully remote and requires the ability to work effectively in an international, fast-paced product environment. What Will The Right Person Look Like?

• Minimum 2 years of professional experience as a Full Stack or Backend-focused Developer.
• Banking industry experience in at least one of the following areas: Credits, Accounting, Core Banking, Transfers (SWIFT, EFT, SEPA, etc.), Treasury, or Financial Analysis.
• Bachelor’s degree in Computer Science, Software Engineering, or a related field.
• Strong proficiency in frontend fundamentals: HTML, CSS, JavaScript.
• Experience with modern JavaScript frameworks such as React, Angular, or Vue.
• Proficiency with server-side languages and frameworks such as .NET, Java, Node.js, or Python.
• Familiarity with database technologies such as MSSQL, MySQL, Oracle, or MongoDB.
• Understanding of RESTful API design and integration patterns.
• Excellent problem-solving, analytical thinking, and debugging skills.
• Strong communication and interpersonal skills; ability to collaborate with cross-functional teams in a remote setting.

What Will You Be Doing?

• Collaborate with product managers, architects, and development teams to ideate and design software solutions.
• Develop client-side and server-side architecture for scalable, secure applications.
• Build intuitive, responsive, and visually appealing frontend interfaces.
• Develop and maintain robust databases, backend services, and APIs.
• Ensure the performance, reliability, and security of applications.
• Troubleshoot, debug, and continuously improve existing systems and functionalities.
• Conduct automated and manual tests to ensure product quality.
• Implement security and data protection best practices across all development layers.
• Build features with a mobile-responsive design approach.
• Write clear, maintainable technical documentation.
• Collaborate with data teams to optimize data workflows and improve platform intelligence.

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