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Build Your Career
at Sironik

We're always looking for exceptional people who want to do the best work of their lives alongside a team that takes craft seriously.

Why People Choose Us

We've built a culture where great engineers can do their best work without noise, politics, or low-quality constraints.

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Remote-First

Work from anywhere in the world. We've been async-first since day one, not as a pandemic pivot.

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Learning Budget

$2,000 per year for conferences, courses, books, and certifications — no approval needed.

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Premium Healthcare

Top-tier health, dental, and vision coverage for you and your family.

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Ownership

Every engineer owns their work end-to-end. No siloed tickets — you see your feature through to production.

Flexible Hours

Core hours 10am–3pm in your timezone. Outside that, work when you're most effective.

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Top Equipment

$3,500 equipment budget to set up the workstation you need to do your best work.

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No Nonsense

Flat hierarchy, direct feedback, no performative meetings. We respect your time.

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Real Equity

Meaningful equity stake for senior hires. We win together.

Current Openings

We hire for excellence, not speed. Read each role carefully and only apply if you're genuinely excited about it.

Senior Full-Stack Engineer
Engineering Remote / New York Full-time

We're looking for a senior engineer to join our core product team, building scalable web applications for enterprise clients. You'll work across the full stack with React and .NET Core, collaborate directly with clients, and have a meaningful impact on architecture decisions. This role is for someone who takes ownership, communicates clearly, and holds themselves to a high engineering standard.

Requirements

  • 5+ years of full-stack development experience
  • Proficiency in React and TypeScript
  • Strong C# / .NET skills (5.0+)
  • Experience with cloud platforms (AWS or Azure)
  • Comfort with relational databases (PostgreSQL or SQL Server)
  • Familiarity with Docker and CI/CD pipelines
  • Strong communication skills — we work closely with clients
Mobile Developer (Flutter)
Engineering Remote / London Full-time

Join our mobile team to build exceptional Flutter applications for iOS and Android. You'll work closely with design and backend teams to ship features that users love, and contribute to architectural decisions on our cross-platform mobile practice.

Requirements

  • 3+ years of Flutter development
  • Strong Dart programming skills
  • Experience with REST APIs and state management (Riverpod or Bloc)
  • At least one published app on App Store or Play Store
  • Understanding of native platform capabilities (camera, push notifications, biometrics)
  • Familiarity with CI/CD for mobile (Fastlane, Bitrise, or similar)
DevOps / SRE Engineer
Infrastructure Remote Full-time

Help us scale and maintain cloud infrastructure for our clients. You'll work with Kubernetes clusters, Terraform modules, and CI/CD pipelines across AWS and Azure. You'll also play a role in defining reliability standards and SLAs for client environments.

Requirements

  • 3+ years of DevOps or SRE experience
  • Kubernetes expertise (CKAD or CKA a plus)
  • Terraform or Pulumi experience
  • Strong scripting skills (Python or Bash)
  • Experience with monitoring and alerting (Grafana, Prometheus, or Datadog)
  • Familiarity with secrets management (Vault or AWS Secrets Manager)
UI/UX Designer
Design Remote / New York Full-time

We're looking for a talented UI/UX designer to join our design team. You'll lead design efforts for client projects from discovery to delivery — running workshops, building wireframes, creating high-fidelity prototypes, and working with engineers to ensure faithful implementation.

Requirements

  • 4+ years of product design experience
  • Expert-level proficiency in Figma
  • Portfolio demonstrating end-to-end product design
  • Experience with design systems
  • Comfort running user research and usability sessions
  • Ability to work directly with clients and present design rationale clearly

Send Us Your CV
Anyway

If you're exceptional at what you do and believe in building software with craft and care, we want to hear from you — even if we don't have an open role.

Send Your Application

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