Senior Software Engineer - Fullstack

Relativity ODA LLC; Kraków; Hybrid; PLN 208,000 - 312,000; Full time

Benefits offered by this job

DTO

Parental leave

Equity program

Job summary

Relativity ODA LLC in Kraków is seeking a Senior Full Stack Software Engineer to design, write, test, deploy, and support Relativity software products for the RelativityOne SaaS platform.

You will work in a senior team with stakeholders to evolve features, services, and data-driven decisions, delivering reliable cloud-native solutions with a focus on frontend development in React and TypeScript.

Qualifications

• Advanced React with TypeScript proficiency and strong UI fundamentals.
• Front-end testing integrated into CI pipelines.
• 5+ years shipping C#/.NET or similar services with measurable reliability gains.
• Experience architecting distributed SaaS systems and translating business needs into resilient designs.
• Production ownership experience including on-call rotations and root cause analyses and using telemetry to reduce MTTR.
• Experience with cloud-native delivery; Azure is preferred.
• CI/CD automation, automated testing and deployment governance.
• English fluency for technical communication.

Responsibilities

• Create architecture for Import/Export services meeting SLO/SLA targets.
• Decompose complex problems into resilient, cloud-native designs.
• Deliver milestones with measurable outcomes.
• Mentor team on code quality and best practices.
• Own production systems with on-call and root-cause analyses.
• Improve observability and telemetry to reduce MTTR.
• Collaborate with Product to shape roadmap with data-backed decisions.
• Optimize CI/CD and automate deployments.
• Build front-end architecture for Import/Export using React and TypeScript.
• Develop accessible, performant UIs with modern React.
• Collaborate with Design to evolve a component library and UI standards.

Skills

React + TypeScript

Front-end testing

C#/.NET

Distributed SaaS design

On-call ownership

Cloud-native (Azure)

CI/CD automation

English fluency

Education

Bachelor's degree in CS/Engineering

Job description

Posting Type

• Hybrid/Remote

Job Overview

WHO WE ARE

Relativity is a leading legal data intelligence company building technology that helps users organize data, discover the truth, and act on it with confidence. Our AI-powered, cloud platform, RelativityOne, transforms massive volumes of complex information into actionable insights for litigation, investigations, regulatory inquiries, data breach responses, and other high-stakes legal work where accuracy and trust are crucial.

The world's largest law firms, corporations, and government agencies rely on Relativity's legal AI software to securely surface and manage the most relevant and impactful information in their matters. Beyond our commercial impact, we are committed to expanding access to technology and supporting pro bono legal work.

WHAT WE DO

You will join Relativity's Import Export organization, a high-impact engineering team at the heart of our Ingestion Department. The team builds and scales the infrastructure that powers secure, reliable, and high-throughput data movement across the SaaS platform.

At Relativity, engineers do more than write code - they build systems that enable users to uncover insights from complex data at scale using cloud-native architecture, AI, and modern tools.

ABOUT THE ROLE

As a Senior Full Stack Software Engineer, your primary mission will be to design, write, test, deploy, and support Relativity software products. You will work in an established senior team with business stakeholders to develop the product, features, and services that drive and evolve RelativityOne SaaS.

WHAT YOU'LL DO

• Create architecture and non-functional design for Import/Export services that meet SLO/SLA targets.
• Decompose complex problems into resilient, cloud-native designs.
• Deliver milestones with measurable outcomes.
• Advise and mentor team members on code quality, technical debt management, and best practices.
• Own production systems by leading on-call procedures, root cause analyses, and proactive issue resolution that reduces MTTR.
• Drive operational excellence using observability data to prioritize work, automate alerts, and expose trustworthy metrics.
• Shape the roadmap with Product through clear trade-offs and data-backed decisions.
• Optimize CI/CD by designing automation that keeps deployments predictable and compliant.
• Build front-end architecture for Import/Export user experiences using React and TypeScript.
• Build accessible, performant UIs with modern React, including hooks and context, and reliable state management.
• Partner with Design to evolve a reusable component library and design system and enforce UI standards.

WHAT WE'RE LOOKING FOR

Required

• Advanced React with TypeScript.
• Front-end testing expertise integrated into CI pipelines.
• 5+ years of experience shipping C#/.NET or similar services with measurable reliability or performance gains.
• Experience architecting distributed SaaS systems and translating business needs into resilient designs.
• Production ownership experience, including leading on-call rotations and root cause analyses and using telemetry to reduce MTTR and incident volume.
• Experience with cloud-native delivery; any cloud is acceptable, and the team is on Azure.
• Hands‑on experience with CI/CD automation, automated testing and deployment governance.
• Bachelor's degree in Computer Science, Engineering, or equivalent experience.
• English fluency for technical communication.

Preferred

• Experience leading microservice work for high-volume event‑driven workloads.
• Experience mentoring teams in frontend development, UI, and accessibility.
• Experience building and maintaining design systems and component libraries.

WHY WE COULD BE A GREAT FIT

Impactful Mission

• Build systems that help customers organize data, discover the truth, and act on it in high-stakes legal matters.

Engineering at Scale

• Work on distributed, cloud-native systems that process large volumes of data.

Cutting-Edge Technology

• Build with AI, cloud platforms, and scalable architectures shaping legal tech.

Growth and Ownership

• Gain experience owning systems end-to-end across cloud and distributed environments.

Collaborative Culture

• Work in a team focused on knowledge sharing and continuous improvement.

Inclusive Environment

• Diverse perspectives create stronger teams and better outcomes.

Compensation and Benefits

• Competitive salary, benefits, DTO, parental leave, and equity program.
• Relativity is committed to competitive, fair, and equitable compensation practices.
• This position is eligible for total compensation which includes a competitive base salary, an annual performance bonus, and long-term incentives.
• The expected salary range for this role is between following values: 208 000 and 312 000PLN
• The final offered salary will be based on several factors, including but not limited to the candidate's depth of experience, skill set, qualifications, and internal pay equity. Hiring at the top end of the range would not be typical,