Senior Backend Developer

Job Description

Vacancy Description

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.

• 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.

Would be a plus

• 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.

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.

What 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

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