I

Intellistack

Back-end solutions enabling startup acceleration

Senior Software Engineer

Full-TimeUpdated on 10/15/2026
No salary listed
Senior
Bachelor's
Kraków, Poland
Hybrid
Software EngineeringFull-Stack Engineering

About the job

Requirements
  • At least 6 years of professional software engineering experience developing and supporting customer-facing SaaS applications.
  • Strong full-stack development experience with modern web technologies.
  • Experience working across multiple products or large distributed applications.
  • Strong understanding of software engineering best practices, including GitHub workflows, automated testing, and continuous integration and continuous delivery (CI/CD).
  • Experience deploying and supporting applications on AWS or similar cloud platforms.
  • Experience maintaining application dependencies, upgrading frameworks, and remediating security vulnerabilities.
  • Demonstrated ability to troubleshoot complex production issues across application code and distributed systems.
  • Willingness to participate in a rotating on-call schedule.
  • Bachelor's degree in Computer Science, Engineering, or equivalent practical experience.
Responsibilities
  • Design, develop, test, and deploy production-quality software across multiple applications and shared platform services.
  • Contribute across frontend and backend codebases, applying strong engineering fundamentals without requiring deep specialization in a single application.
  • Design and implement improvements to reliability, security, maintainability, and engineering velocity.
  • Own and improve development workflows, CI/CD pipelines, and deployment automation.
  • Maintain and modernize application dependencies and runtime environments to keep products secure and performant.
  • Investigate, troubleshoot, and resolve complex production issues spanning multiple products and services.
  • Partner with Platform Engineering, Product, and Customer Support to deliver reliable, secure customer experiences.
  • Participate in architecture discussions, technical design reviews, and engineering planning.
  • Mentor other engineers through code reviews, technical guidance, and knowledge sharing.
  • Use AI-powered development tools to improve productivity, quality, and delivery velocity.
  • Participate in a rotating on-call schedule for production support.
Desired Qualifications
  • Experience with React, JavaScript/TypeScript, PHP, Laravel, Java, and Node.js.
  • Experience improving GitHub Actions, CI/CD pipelines, or deployment automation.
  • Experience with Docker or containerized applications.
  • Experience with observability platforms such as Datadog, Sumo Logic, CloudWatch, or Sentry.
  • Experience supporting enterprise-scale SaaS platforms.
  • Experience mentoring engineers, enforcing code quality, and leading technical initiatives.
  • Experience leveraging AI-assisted development tools to improve engineering productivity.

About the company

IntelliStack provides backend development and operations support tailored for startups. It handles the heavy lifting of server infrastructure, databases, APIs, and deployment so founders can focus on building their product. The service works by supplying a dedicated backend team and managed services that cover core backend tasks, monitoring, and scaling, allowing rapid iteration without getting bogged down in technical chores. IntelliStack differentiates itself by targeting early-stage founders and promising faster progress—the goal is to help startups accelerate their growth by taking the backend workload off their plate and enabling teams to move from idea to product-market fit faster.

Company Size

1-10

Company Stage

N/A

Total Funding

N/A

Headquarters

Cambridge, Massachusetts

Founded

2018

Get referred to Intellistack

See people who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • March 5, 2026 healthcare board launch targets regulated buyers with buying power.
  • April 2026 Streamline updates added embedded workflows, HMAC webhooks, and session controls.
  • August 2026 Dreamforce demos position CLM against Salesforce buyers before Q4 renewals.

What critics are saying

  • DocuSign remains the default CLM buyer choice, squeezing Intellistack's Salesforce niche.
  • The 2023 Formstack layoff of over 100 employees exposes fragile operating discipline.
  • If Streamline stalls, the 2025 rebrand wastes Formstack's legacy and weakens hiring.

What makes Intellistack unique

  • Intellistack Streamline CLM runs inside Salesforce, not beside it, reducing implementation friction.
  • The 2025 Formstack rebrand unified Forms, Documents, eSignature, and Streamline under one platform.
  • The March 2026 healthcare advisory board adds NHS and U.S. clinical credibility.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Flexible Work Hours

Remote Work Options

Unlimited Paid Time Off

Health Insurance

Professional Development Budget