Senior Backend Software Engineer (Node.js) at Techstack Ltd

Hoorya; Wrocław; Hybrid; PLN 220,000 - 300,000; Full time

Benefits offered by this job

Long-term position

Professional growth

Collaborative environment

Remote work possible

Education & conference support

English courses

Paid time off & sick days

Legal and accounting support

Gifts for occasions

Job summary

Hoorya is seeking a Senior Backend Software Engineer (Node.js) to join a long-term project for a Canadian partner. You will maintain and modernize a large ecosystem of services, APIs, and admin portals, spanning legacy and cloud-based technologies.

You will work with Node.js, TypeScript, JavaScript, AWS, and a range of databases and messaging systems, applying AI-assisted tools to coding, debugging, and documentation while ensuring code quality and security.

Qualifications

• 5+ years of commercial software development experience.
• Strong hands-on experience with Node.js, TypeScript, and JavaScript.
• Experience building and supporting REST APIs and distributed systems.
• Strong SQL skills and experience with relational databases.
• Confident hands-on experience with AWS and cloud infrastructure.
• Experience troubleshooting production systems and working with legacy applications.
• Good understanding of software architecture, design patterns, security, and system integrations.
• Comfortable working independently with complex systems and limited documentation.
• Hands-on experience using AI-assisted development tools such as GitHub Copilot, Cursor, Claude Code, or similar in everyday work.
• Ability to use AI tools for coding, debugging, testing, refactoring, documentation, and exploring unfamiliar codebases, while carefully reviewing the generated output.
• Strong sense of ownership, attention to detail, and a practical approach to solving problems.

Responsibilities

• Support and improve backend services, APIs, admin portals, websites, and automation tools.
• Maintain and gradually modernize existing applications, working across both legacy and newer technologies.
• Investigate production issues, troubleshoot problems, and find their root causes.
• Work with AWS services, cloud infrastructure, and deployment pipelines.
• Improve the stability, performance, and maintainability of existing systems.
• Dive into unfamiliar systems, figure out how they work, and help keep technical documentation up to date.
• Use AI tools in daily work for coding, debugging, testing, refactoring, and documentation.
• Review AI-generated code and ensure it meets quality, security, and maintainability standards.
• Work closely with the team and client-side stakeholders during onboarding and knowledge transfer.
• Take ownership of your areas and help reduce technical debt.

Skills

Node.js

TypeScript

JavaScript

REST APIs

Distributed systems

SQL

AWS

Security

Code review

Ownership

Tools

MySQL

PostgreSQL

MongoDB

Amazon Aurora

AWS Lambda

Serverless Framework

API Gateway

AWS SDK

RabbitMQ

Amazon SQS

Docker

Terraform

AngularJS v1

GitHub Copilot

Cursor

Claude Code

Job description

We are looking for a Senior Backend Software Engineer (Node.js) to join a long-term project for our Canadian partner, an international software company with a portfolio of Windows products distributed under multiple brands. The project involves a large, interconnected ecosystem of applications and services built and maintained over many years. It combines legacy systems with modern cloud-based solutions and includes backend services, administrative platforms, APIs, websites, integrations, and internal tools supporting product distribution, marketing, and operations. Technology stack: Node.js, TypeScript, JavaScript, MySQL, PostgreSQL, MongoDB, Amazon Aurora, AWS, AWS Lambda, Serverless Framework, API Gateway, AWS SDK, RabbitMQ, Amazon SQS, Docker, Terraform, AngularJS v1, GitHub Copilot.

Обов’язки

• Support and improve backend services, APIs, admin portals, websites, and automation tools.
• Maintain and gradually modernize existing applications, working across both legacy and newer technologies.
• Investigate production issues, troubleshoot problems, and find their root causes.
• Work with AWS services, cloud infrastructure, and deployment pipelines.
• Improve the stability, performance, and maintainability of existing systems.
• Dive into unfamiliar systems, figure out how they work, and help keep technical documentation up to date.
• Use AI tools in your daily work for coding, debugging, testing, refactoring, and documentation.
• Review AI-generated code and make sure it meets the required standards for quality, security, and maintainability.
• Work closely with the team and client-side stakeholders during onboarding and knowledge transfer.
• Take ownership of your areas and help reduce technical debt.

Вимоги

• 5+ years of commercial software development experience.
• Strong hands-on experience with Node.js, TypeScript, and JavaScript.
• Experience building and supporting REST APIs and distributed systems.
• Strong SQL skills and experience with relational databases.
• Confident hands-on experience with AWS and cloud infrastructure.
• Experience troubleshooting production systems and working with legacy applications.
• Good understanding of software architecture, design patterns, security, and system integrations.
• Comfortable working independently with complex systems and limited documentation.
• Hands-on experience using AI-assisted development tools such as GitHub Copilot, Cursor, Claude Code, or similar in everyday work.
• Ability to use AI tools for coding, debugging, testing, refactoring, documentation, and exploring unfamiliar codebases, while carefully reviewing the generated output.
• Strong sense of ownership, attention to detail, and a practical approach to solving problems.

Що пропонуємо

• Stable and long-term position in an experienced team.
• Broad opportunities for professional and career growth, including professional challenges that encourage personal development, meetups, hackathons, professional communities, and more.
• Horizontal connections and the absence of micromanagement foster a collaborative environment in which all team members are accessible to one another for any concerns.
• Hubs in Kharkiv, Kyiv, Lviv, and Wrocław (Poland), or everything necessary for remote work.
• Up to 50% compensation for the cost of educational courses and conferences to support professional development.
• Free English language and business English courses.
• 20 days off and 7 sick days to support your health and well-being.
• Legal and accounting support.
• Appreciation gifts for significant events and occasions.