Senior Backend Engineer (.NET Core) | Remote | LATAM
Remote from: Mexico, Peru, Argentina, Guatemala, Honduras, or Colombia
Native Spanish & B2+ English Required
🚀 Join an international FinTech company building next-generation investment platforms.
We are looking for an experienced Senior Backend Engineer to join a high-performing international engineering team. This is a hands-on technical role for a senior individual contributor who is passionate about building scalable backend systems, designing robust APIs, and delivering high-quality software in a modern cloud environment.
This is not a management or architecture role—your primary focus will be designing, developing, and improving mission-critical backend services while collaborating with senior engineers across multiple countries.
📍 Position Details
- Position: Senior Backend Engineer
- Employment Type: Full-Time Contractor
- Location: Remote (Applicants must be based in Mexico, Peru, Argentina, Guatemala, Honduras, or Colombia)
- Project Duration: Initial 12-month contract with strong potential for long-term extension
- Working Schedule: Monday–Friday, aligned with Spain (Barcelona) business hours, starting at 12:00 PM Spain time
- Team: International engineering team across Spain, Greece, Ukraine, and other European countries
🚀 What You'll Do
- Design, develop, and maintain scalable backend services using .NET Core and C#.
- Build and enhance secure, high-performance REST APIs for internal and external platforms.
- Own backend components from design through production deployment.
- Develop integrations with financial institutions, investment brokers, payment providers, and third-party services.
- Write clean, maintainable, fault-tolerant, and scalable code.
- Improve platform performance, reliability, and maintainability.
- Participate in technical discussions, architecture reviews, and code reviews with senior engineers.
- Support CI/CD initiatives and cloud infrastructure improvements when required.
- Collaborate within a distributed international engineering team.
✅ Required Qualifications
- 8+ years of professional Backend Software Engineering experience.
- Strong hands-on experience with .NET Core and C#.
- Extensive experience designing and developing REST APIs.
- Strong experience with relational and NoSQL databases, including:
- SQL
- MongoDB
- Firestore
- Other NoSQL databases
- Experience working with cloud platforms:
- Strong understanding of scalable backend architecture and distributed systems.
- Ability to work independently with minimal supervision.
- English proficiency (B2+) for technical meetings and collaboration.
- Bachelor's degree in Computer Science, Software Engineering, Information Systems, or a related field (or equivalent experience).
⭐ Mandatory Industry Experience
We are specifically looking for candidates with experience building technology for the investment sector, including one or more of the following:
- Investment FinTech platforms
- Robo Advisors
- Neobrokers
- Wealth Management platforms
- Investment trading systems
- Financial market integrations
- Investment brokerage platforms
Please note: Experience limited to payment processing FinTechs without exposure to investment platforms will not meet the requirements for this position.
⭐ Preferred Qualifications
- Kubernetes
- CI/CD pipelines
- RabbitMQ or other event-driven messaging systems
- Microservices architecture
- Distributed systems
- Background processing services
💻 Technologies
Backend
- .NET Core
- C#
- REST APIs
- Microservices
Databases
- SQL
- MongoDB
- Firestore
- NoSQL Databases
Cloud & DevOps
- AWS
- Azure
- Google Cloud Platform (GCP)
- CI/CD
- Kubernetes
- RabbitMQ
🌟 Why Join This Opportunity?
- Work on cutting-edge FinTech investment platforms with real business impact.
- Collaborate with a highly experienced international engineering team.
- Fully remote opportunity within LATAM.
- Structured onboarding and long-term project stability.
- High technical standards, modern technologies, and challenging engineering problems.
- Opportunity to work directly with senior technical leadership in a fast-growing international environment.
📩 If you have strong .NET Core expertise and proven experience in investment-focused FinTech platforms, we'd love to hear from you. Apply today!
