Possible location
  • Warsaw
Technologies & tools

Must have:

  • SQL
  • Microsoft SQL Server
  • SSIS
  • SSAS

Nice-to-have:

  • PL/SQL
  • snowFlake

We are looking for Senior SQL Developer able to work independently with defined problems on a highly complex level within certain areas of expertise. Must be able to lead, train and coach other project members.

Your role

  • Designing, developing, and maintaining SQL databases to meet business requirements
  • Creating and optimizing complex SQL queries to retrieve and manipulate data
  • Developing and maintaining stored procedures, functions, triggers, and scripts
  • Building and maintaining reconciliation reports
  • Analyzing and optimizing database performance, including indexing, query optimization, and identifying performance bottlenecks

Your skills
  • At least 8 years of experience in IT projects
  • Minimum 5 years as SQL Developer
  • Strong SQL development skills
  • Microsoft SQL Server Database experience
  • Working knowledge of SSIS, SSAS
  • Knowledge of procedures, Views, Functions, and other PL/SQL concepts
  • Ability to write and analyze complex SQL queries using CTE, window functions, etc.

Optional:

  • Good knowledge of working with Excel. Excel formulas, PIVOT table, VLOOKUP, etc.
  • Ability to analyze and reconcile large datasets, identify data issues, and come up with analysis report
  • Working knowledge of Snowflake

Job no. 240626-989OB

Why Sii

Great Place to Work

it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas

More

Fascinating projects

prestigious brands from around the world, long-term contracts with many clients

More

Projects suited to you

Do you want to change your career path? Is your project coming to an end? We’ll find you a new one! We have an app for this – Job Changer

More

We share the profit with Workers

last year we allocated PLN 23 M to this benefit

More

PLN 1 000 000 per year for your ideas

with this amount, we support the passions and voluntary actions of our workers

More

7 500 experts and many development opportunities

Tech Communities, workshops, a training platform, and a technology blog – you choose

More

Employment stability

revenue of EUR 480M, no debts, since 2006 on the market

More

Great, comfortable offices

perfect place to work, integrate, have fun together, and celebrate successes

More

Open-minded and available management team

quick decision-making, we’re all on a first-name basis

More

True values

these are not empty words – we’re guided by them every day

More

Fantastic atmosphere

created by all Sii Power People

More

Attractive benefits package

private healthcare, benefits cafeteria platform, car discounts and more

Show more Show less

Join us

Allowed extensions: DOC, DOCX, PDF (max 5MB)

Your message was sent successfully.

Thank you!

Find out more about Sii

Sorry, something went wrong and your message couldn’t be delivered.

Please refresh the page and try again.

File upload error

No file was uploaded

Incorrect file size (max 5MB)

Invalid file format

Empty file

Processing...

Do you have a friend looking for a new role?

Bring them to Sii and receive a bonus

Introduce your friend
We hire them
You get up to PLN 8 000

Recommended person data

Allowed extensions: DOC, DOCX, PDF (max 5MB)

Your data

Terms and conditions
Introduce your friend to Sii
If she/he joins us
You get up to PLN 8 000

Your message was sent successfully.

Thank you!

Find out more about Sii

Sorry, something went wrong and your message couldn’t be delivered.

Please refresh the page and try again.

File upload error

No file was uploaded

Incorrect file size (max 5MB)

Invalid file format

Empty file

Processing...

Apply now Recommend a Friend

SUBMIT

Ta treść jest dostępna tylko w jednej wersji językowej.
Nastąpi przekierowanie do strony głównej.

Czy chcesz opuścić tę stronę?

Einige Inhalte sind nicht in deutscher Sprache verfügbar.
Sie werden auf die deutsche Homepage weitergeleitet.

Möchten Sie fortsetzen?