We are looking for a skilled Senior Backend Developer (Golang, Typescript) to build and support high-performance backend services for a FinTech platform. The ideal candidate should have strong experience with TypeScript and Go (Golang), and a solid background in designing scalable, secure solutions within a cloud-native architecture.
Requirements
- Fluent in English with excellent communication skills.
- Experience working in FinTech or other highly regulated industries.
- Knowledge of blockchain technologies and cryptographic security.
- Understanding of financial data processing, payment gateways, and transaction security.
- 6+ years of experience in developing and maintaining backend services using TypeScript and Go (Golang).
- Strong expertise in GraphQL (Apollo Server) and RESTful API development.
- Solid understanding of cloud-native architectures, particularly AWS serverless solutions (Lambda, API Gateway, DynamoDB, CloudFormation).
- Experience with NoSQL and SQL databases, with an emphasis on performance optimization.
- Strong knowledge of authentication, authorization, and security best practices.
- Exposure to DevOps practices, CI/CD pipelines, and infrastructure as code.
- Frontend experience is a plus: React, CSS, Next.js.
- Strong problem-solving skills and ability to work in a fast-paced environment.
Responsibilities
- Develop and maintain backend services using TypeScript and Go (Golang).
- Build and optimize GraphQL APIs with Apollo Server and REST APIs using Koa.js (or equivalent in Go).
- Integrate with third-party APIs and external services.
- Design and manage AWS serverless architectures including Lambda, API Gateway, DynamoDB.
- Ensure security, authentication, and data protection using JWT, OAuth.
- Optimize API performance, caching strategies (Redis), and database queries.
- Implement CI/CD pipelines and Infrastructure as Code (IaC) using CloudFormation.
- Handle error logging and monitoring using AWS CloudWatch.
- Optimize database queries and indexing for high-volume transaction processing.
- Write and maintain unit, integration, and end-to-end tests using Jest (or relevant testing frameworks in Go).
- Collaborate with frontend teams, product managers, and designers to ensure seamless integration.
- Mentor junior developers and review code for best practices.
- Maintain API documentation and system architecture.
- Adhere to industry standards for FinTech and implement best practices.
Would be a plus
We offer
- Competitive compensation
- Social package (24 working days of annual leave and 5 paid sick days)
- Flexible working hours
- Challenging projects in diverse business domains and a variety of tech stacks
- Personal development and professional growth opportunities
- Work with talented, ambitious and family-feel team
- Educational possibilities: corporate courses, knowledge hubs, and in-house English classes
- Compensation for your professional certification & support for your learning activities
- Opportunity to choose IT equipment you like
- Corporate social responsibility
all positions
Senior Backend Developer (Golang, Typescript)
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Kyiv, Ukraine
Remote / Full-time
