Simplify

Senior Full-stack Developer (Node.js/React) to join our project on an out-staffing basis. 

The Developer will be responsible for creating and maintaining Node.js microservices, their tooling and modules. 

Daily calls for the project take place from 8:30PM till 10PM (Kiev time zone).

Start: ASAP

Load: Full-time

Duration: long-term

Client's location: Canada, Vancouver

Requirements:

- 5+ years of experience in software development

- Experience with TypeScript, Node.js, Express

- Experience with React

- Experience with PostgreSQL

- Experience with REST API design and implementation

- Experience with Terraform

- Good communication and team player skills

- Ability to take ownership of a part of the process and results of the work

- Upper-Intermediate English level

Nice to have:

- Experience with Keystone.js 

- Experience with Python

We are an advertising company that has developed three in-house software products, which we currently use successfully within the organization. Over time, we realized that these tools have the potential to evolve into a full-fledged SaaS service.

At present, we are actively working on creating a professional product for working with the Amazon Advertising API. While we already have a functional prototype, we need a specialist with a deep understanding of high-load systems and complex computational processes to refine and scale it.

Key Responsibilities:
Finalizing the development of the SaaS product to meet high-load requirements.
Optimizing the system’s architecture and performance.
Creating a user-friendly, autonomous tool based on the practical experience of our specialists, integrated with AI.

What We Expect from the Candidate:
Experience with PostgreSQL, ClickHouse, and optimizing high-load systems.
Skills in designing and developing scalable architecture.
Expertise in working with large volumes of data and data processing.
Our Mission:
To create a product that maximizes automation of routine tasks while maintaining convenience and efficiency for professionals

Software Architect (PHP) to help shape the technical direction of our product and ensure long-term scalability, maintainability, and performance. You’ll collaborate closely with engineering squads, product managers, and DevOps to guide architectural decisions, improve technical standards, and mentor senior engineers.

Tech Stack
Languages & Frameworks:
PHP 8+
Symfony, Laravel (depending on squad focus)
Node.js (for selected backend services)

Databases:
PostgreSQL, MySQL, MongoDB
Infrastructure:
AWS (EC2, ECS, S3, RDS, CloudFront, Lambda)
Kubernetes, Docker
CI/CD pipelines (Jenkins, GitHub Actions)
Monitoring & Logging:
Prometheus, Grafana, Kibana

Other:
REST APIs, Webhooks, SQS/SNS
PHPUnit, Postman, BDD/TDD
Git, monorepo/multirepo strategies
What We’re Looking For
8+ years of software engineering experience, with a focus on backend and distributed systems
3+ years in an architectural or staff-level role, ideally in a product-driven environment
Deep knowledge of PHP (Symfony or Laravel) and modern architectural patterns
Strong understanding of microservices, event-driven systems, and API design
Experience designing and maintaining systems at scale (high-load, multi-region, high availability)
Proficiency in cloud infrastructure (preferably AWS), Docker, and Kubernetes
Ability to balance business needs with technical excellence
Excellent communication skills and fluent English (B2+)

Nice-to-Haves
Experience introducing DDD, CQRS, or hexagonal architecture
Familiarity with Node.js
Experience working in a regulated or enterprise environment (e.g. e-commerce, fintech)
Previous experience working in or leading cross-functional squads

Work Format: Remote
Team: Experienced engineers, product-minded, collaborative culture
Approach: Autonomous squads, strong code quality culture, modern tech and tooling

About the Role

A dynamic international team is looking for a Senior DevOps Engineer to join long-term projects in cybersecurity, equity management, and other cutting-edge domains. The position involves solving complex technical challenges and working with modern infrastructure tools in a remote-first environment.

We’re looking for someone who:

• Has 5+ years of hands-on experience in DevOps and understands current industry standards and trends
• Is highly proficient with AWS and related services
• Has solid experience with Infrastructure-as-Code tools like Terraform or Terragrunt
• Is confident working with Kubernetes and Helm
• Understands networking fundamentals: subnetting, HTTP, DNS, TLS, OSI Model
• Has a consulting mindset – can assess multiple solutions and communicate trade-offs clearly
• Is comfortable communicating in English at an upper-intermediate level or higher

Nice-to-have skills:

• Expertise with ArgoCD
• Experience managing databases like Cassandra, Clickhouse, or OpenSearch
• Familiarity with observability tools (e.g. ELK, Prometheus, Grafana)
• Certifications such as AWS, CKA, or similar
• Contribution to open-source projects or personal tech initiatives

What’s offered:

• Work on technically advanced projects with global clients
• Competitive compensation
• Paid national holidays, vacation, and sick leave
• Remote-first work culture
• Mentorship from senior technical leadership
• $400/year learning & development budget
• Support with FOP administration (for Ukrainian-based candidates)