Senior Software Engineer - Full-Stack

Nium, the Leader in Real-Time Global Payments 

At Nium, we operate at the intersection of an increasingly interconnected world, where the traditional finance industry has been disrupted, and on-demand is in demand. Our payments infrastructure is leading a transformation in payments, enabling anyone, anywhere to make and receive payments instantly, regardless of the location or currency. We currently support: 

-Regulatory Licenses and Authorizations in 40+ Countries, enabling seamless onboarding, rapid integration, and compliance

-190+ Pay Out Markets – 100+ in real time

-35+ Pay In Markets

-30+ Card Issuance Markets

-100+ Supported Currencies 

Today, Nium is the leader in real-time global payments and the fastest way to send money across borders. We are co-headquartered in San Francisco and Singapore, with regional offices in Australia, Brazil, Hong Kong, India, Indonesia, Japan, Lithuania, London, Malaysia, Malta, Netherlands, and UAE. 

Position Overview: 

We are seeking an experienced Senior Full-Stack Developer with a deep understanding of backend development using Node.js and a basic understanding of front-end technologies like React or Next.js. The ideal candidate will have a strong foundation in system design, data structures, and algorithms, along with a deep understanding of relational databases such as PostgreSQL or MySQL. Additionally, the candidate should possess knowledge of AWS services to support scalable and reliable infrastructure. Experience in leading a small team of developers is essential. 

• Backend Development: Design, develop, and maintain secure, scalable, and high-performance backend services using Node.js. 
• Frontend Integration: Collaborate with front-end developers and integrate back-end services with user interfaces built using React or Next.js. 
• System Design: Architect and design complex systems, ensuring scalability, reliability, and maintainability. 
• Data Structures & Algorithms: Apply deep knowledge of DSA to optimize backend and full-stack solutions. 
• Database Management: Design, develop, and optimize relational database schemas and queries, with a focus on PostgreSQL or MySQL. 
• AWS Services: Utilize AWS services (e.g., EC2, S3, Lambda) to build and maintain scalable cloud-based infrastructure. 
• Team Leadership: Lead a team of up to 3 developers, providing technical guidance, mentoring, and support. Manage workloads and priorities to ensure timely project delivery. 
• Code Quality: Write clean, maintainable, and efficient code, promoting best practices in software development across the team. 
• Security: Implement security best practices to protect data integrity and prevent unauthorized access across the stack. 
• Collaboration: Work closely with front-end developers, product managers, and other stakeholders to deliver high-quality full-stack solutions. 
• Debugging & Optimization: Identify performance bottlenecks and bugs, and devise solutions to address them in both backend and frontend environments. 
• Documentation: Document code, APIs, database schemas, and architectural decisions to ensure maintainability and knowledge sharing across the team. 

• Education:Bachelor's degree in computer science, Engineering, or a related field (or equivalent practical experience). 
• Experience: 3-5 years of experience in full-stack development, with a proven track record of leading small teams and delivering complex projects. 

• Deep proficiency in Node.js. 
• Basic understanding of front-end technologies, especially React or Next.js. 
• Strong experience with relational databases, particularly PostgreSQL or MySQL. 
• Strong knowledge of system design, data structures, and algorithms. 
• Familiarity with version control systems, preferably Git. 
• Experience with RESTful API development and integration. 

• Experience leading a team of developers, with the ability to mentor, guide, and manage team dynamics. 
• Excellent problem-solving and decision-making skills. 
• Strong communication skills, with the ability to convey complex technical concepts to both technical and non-technical stakeholders. 

• Experience with microservices architecture. 
• Familiarity with containerization tools like Docker and orchestration platforms like Kubernetes. 
• Knowledge of CI/CD pipelines and DevOps practices. 
• Experience with performance tuning and optimization across the full stack. 

Depending on your location, the General Data Protection Regulation (GDPR) and California Consumer Privacy Act (CCPA) may regulate the way we manage the data of job candidates. Please review our Candidate Privacy Notice for more information.

Candidate Privacy Notice: https://www.nium.com/privacy/candidate-privacy-notice

What we offer at Nium  

We Value Performance: Through competitive salaries, performance bonuses, uncapped sales commissions and robust performance reviews, we ensure that all employees are rewarded and incentivized for their hard work. 

We Care for Our Employees: The wellness of Nium’ers is our #1 priority. In addition to many other benefits, we offer medical coverage, 24/7 employee assistance program, generous time off policies, and a year-end shut down. We also provide a hybrid working environment (3 days per week in the office). 

We Upskill Ourselves: We are curious, always want to learn more and upskill ourselves. As well as role-specific training, we also offer a global learning stipend. 

We Constantly Innovate: Nium continues to be globally recognized for its constant innovations, growth, and employee-centric mindset since our inception: 

-2022 Great Place To Work Certification

-2023 CB Insights Fintech 100 List of Most Promising Fintech Companies. 

We Celebrate Together: Work is also about having fun with your colleagues and forging deep relationships. We host company-wide social events onsite and virtually, provide team morale budget and bonding activities, happy hours, team offsites, and much more!  

We Thrive with Diversity: Across 33 nationalities and 18+ countries, our diverse and multicultural team embodies our commitment to a safe and welcoming environment for everyone.  

What it’s like to be a Nium'er 

At Nium we center our way of work around 3 core values globally: 

#KeepItSimple: We cut through complexity, simplify at speed and operate with scale in mind. 

#MakeItBetter: We build innovative solutions that make our customers' lives better. 

#WinItTogether: We win in this competitive market by collaborating as one team. 

For more information, visit www.nium.com.