Staff Software Engineer (Scala)

Location: Nationwide (Letterkenny GDC Base) hybrid policy with some travel to Letterkenny, Co Donegal / Customer site in Dublin

Role: Staff Software Engineer (Scala)

Join a leading IT consultancy where you will have autonomy to shape your career. This is a role focused on designing, creating and maintaining applications and software.

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• Collaborate with cross-functional teams of engineers, product managers, and designers.
  
• Build scalable, performant, and resilient backend systems that support critical business needs.
  
• Participate in system design and architecture reviews to influence technical direction.
  
• Drive software quality through code reviews, testing, and continuous integration.
  
• Contribute to a positive and inclusive engineering culture through mentorship, knowledge sharing, and leadership at your level.
  
• Investigate and resolve complex technical issues in production environments.
  
• Author and review technical design documents, RFCs, and root cause analyses.
  
• Continuously learn and grow in your engineering craft and domain knowledge.
  
• Participate in an on-call rotation to ensure swift resolution of any production outages involving your systems.
  

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• 7+ years of professional experience.
  
• Recognized technical authority with the ability to influence system architecture across teams or domains.
  
• Track record of delivering high-impact projects with significant architectural ownership.
  
• Mastery of multiple languages and paradigms; able to guide complex trade-offs and tech decisions.
  
• Extensive experience scaling systems to handle high throughput and low latency.
  
• Strong ability to mentor, elevate peers, and lead cross-team technical initiatives.
  
• Proven experience driving quality, reliability, and operational excellence at scale.
  
• Strategic thinking with the ability to align technical direction with company goals.
  
• Thought leadership in areas like distributed systems, functional programming, or cloud-native architecture.
  

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• Deep operational knowledge of AWS, including cost-aware system design.
  
• Contributions to engineering culture, hiring, or organizational development.
  
• Expertise in Scala and/or functional programming patterns.
  

Tata Consultancy Services UK&I is committed to meeting the accessibility needs of all individuals in accordance with the Ireland Employment Equality Acts 1998-2011 (as amended) and the Equal Status Acts 2 as amended).

We welcome and embrace diversity in race, nationality, ethnicity, disability, neurodiversity, gender identity, age, physical ability, gender reassignment, sexual orientation. We are a disability inclusive employer and encourage disabled people to apply for this role.

As a Disability Confident Employer, we offer an interview to applicants with disabilities or long-term conditions who meet the minimum criteria for the role. Please email us at if you would like to opt in.

If you are an applicant who needs any adjustments to the application process or interview, please contact us at with the subject line: “Adjustment Request” or email to request an adjustment. We welcome requests prior to you completing the application and at any stage of the recruitment process.

Beware of Fraudulent offers: This is to notify you that TCS does not ask for any sort of payment or security deposit from candidates at any stage of the recruitment process. The firm never sends out job offers from free internet email services. If you suspect fraud, write to to report it.

Due to the high volume of applications, we will be unable to contact each applicant individually on the status of their application. If you have not received a direct response within 30 days, it should be deemed unsuccessful. xcfaprz

Join us and do more of what matters. Apply online now.