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Job Type: Permanent
Location: Letterkenny GDC, Co. Donegal (Hybrid – minimum 3 days onsite per month)
Do you have a proven track record in Python and SQL?
Are you keen to future proof your career in the Data Engineering space with a leading global IT organisation?
Make your mark at TCS as a Data Engineer
Join a global tech leader right here in Donegal. 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 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 - 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 leadership.
* Join a leading global IT services organisation.
* Be part of an exciting team where you will be challenged every day.
* Gain exposure to innovative technology.
The Role
We are seeking an experienced Data Engineer to join our team. You'll have extensive experience in Python and SQL to design, build, and operate reliable data extraction and processing. The role focuses on practical delivery of ingesting, transforming, and optimizing data to support analytics and reporting use cases.
Key Responsibilities:
* Data Integration & ETL Development
o Strong hands‑on experience in Python (data processing, transformations, automation), SQL (complex queries, joins, stored procedures, performance tuning).
o Build and optimize data transformations using Python and SQL to ingest and integrate data from multiple structured and semi‑structured sources.
o Strong experience working with relational databases (e.g. SQL Server, PostgreSQL, Oracle, MySQL).
* Solution Delivery & Continuous Improvement
o Contribute to large-scale architectural migrations and modernization initiatives within an Agile environment.
o Monitor, troubleshoot, and optimize data pipelines for performance and reliability.
o Document data models, workflows, and engineering processes for transparency and maintainability.
Your Profile
Essential skills/knowledge/experience:
* Bachelor's degree in computer science, data engineering, or related field.
* Proven experience in building Python, SQL and ETL based solutions.
* Strong programming proficiency in various relational databases, SQL, Python.
* Solid understanding of ETL / ELT patterns, data warehousing, data governance, data quality and cloud migration strategies.
* Hands-on experience with Agile methodologies, DevOps, and tools like Jira, Confluence.
* Excellent analytical, problem-solving, and communication skills.
Desirable skills/knowledge/experience:
* Familiarity with Finance / Investment industry data domains.
* Experience with SAFe Agile framework.
Rewards & Benefits
TCS is consistently voted a Top Employer in the UK and globally. Our competitive salary packages feature pension, health care, life assurance, laptop, phone, 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.
Diversity, Inclusion and Wellbeing
Tata Consultancy Services UK&I is committed to meeting the accessibility needs of all individuals in accordance with the UK Equality Act 2010 and the UK Human Rights Act 1998.
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". 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 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.
Join us and do more of what matters. Apply online now.