Senior Lead Developer (Scala)

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Job Type: Permanen

tLocation: Nationwide (Letterkenny Primary Base with occasional travel to Letterkenny GDC)

Can you drive technical direction as an SM

E?Ready to join a leading IT consultancy where you will the autonomy to shape your caree r? Make a meaningful impact as a Senior Lead Developer (Scal a) at T CS!

Join a global tech leader right here in Donegal. TCS is a purpose‑led transformation company, built on belief. We do not just help businesses to transform through technology. We support them in making a meaningful difference to the people and communities they serve. With over 850 employees and a state‑of‑the‑art global delivery centre, we’re proud to offer world‑class career opportunities without having to leave the Northwest. Recognised as Workplace of the Year by the Letterkenny Chamber, we foster a culture of continuous learning, innovation, and respect. Our people are at the heart of everything we do – collaborating across teams, geographies, and disciplines to drive real change for clients around the world. Be part of something global, grounded in Donecal . TCS is a purpose‑led transformation company, built on belief. We do not just help businesses to transform through technology. We support them in making a meaningful difference to the people and communities they serve - our clients include some of the biggest brands in the UK and worldwide. For you, it means more to make an impact that matters, through challenging projects which demand ambitious innovation and thought leader ship. Collaborate with leading lights of ind industryGain access to endless learning opportunitiesShape the future of TCS Th e RoleWe are seeking a Senior Lead Developer (Scala) with deep expertise in application and back‑end development with a passion for building innovative solutions. This is an exciting opportunity to work on industry‑leading products and platforms, where you’ll design, develop, and maintain robust, scalable systems that power transformative digital experiences.

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• Collaborate with leading lights of ind industryGain access to endless learning opportunitieShape the future of TCS Th e
  

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• Design and build high‑performance, stable, scalable systems that will be deployed in an enterprise setting.
  
• Contribute to high‑level architecture discussions and planning sessions.
  
• 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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• Experience: Primary tech stack – Scala (a must), Java, AWS
  
• Experience 8+ years in-depth professional experience.
  
• Strong understanding of engineering software processes, lifecycle methodology, configuration management, release management, and system verification and testing.
  
• Ability to work independently and oversee entire projects or significant parts, focusing on completing the tasks on time.
  
• Recognised technical authority with the ability to influence system architecture across teams or domains.
  
• Ability to lead the development team.
  
• Track record of delivering high‑impact projects with significant architectural ownership.
  
• 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 such as distributed systems, functional programming, or cloud‑native architecture.
  

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• Experience: Secondary tech stack – Solid experience in Golang, Python.
  
• Deep operational knowledge of AWS, including cost‑aware system design.
  
• Contributions to engineering culture, hiring, or organisational development.
  

TCS is consistently voted a Top Employer in the UK and globally. Our competitive salary packages feature pension, health care, life assurance, laptop and access to extensive training resources and discounts within the larger Tata network. We offer health & wellness initiatives and sports events; we are the proud sponsor of the London Marathon and partner with our local communities in Ireland.

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 2000‑2012 (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 UKI.Rec­ 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 UKI.Rec­ with the subject line: “Adjustment Request” or email fion​ to request an adjustment. We welcome requests prior to you completing the application and at any stage of the recruitment process.

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 like Gmail, Yahoo Mail, and so on. TCS has not authorised any third‑party company to collect money on their behalf. As a vigilant job seeker, beware of fraudulent recruitment activity and protect your interests! You can write to to report any fraudulent activity. 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, then it should be deemed unsuccessful on this occasion. xcfaprz

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