Nisanthan Sivarajah - BI Consultant

Q: Where is Nisanthan based?

Nisanthan is based in Berlin, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Nisanthan speak?

Nisanthan speaks the following languages: German (Native), Tamil (Native), English (Advanced) .

Q: How many years of experience does Nisanthan have?

Nisanthan has at least 12 years of experience. During this time, Nisanthan has worked in at least 6 different roles and for 5 different companies . The average length of individual experience is 2 years . Note that Nisanthan may not have shared all experience and actually has more experience.

Q: What is Nisanthan's latest experience?

Nisanthan's most recent position is Business Intelligence Consultant (freelance) at NBIC – Nisanthan BI Consulting .

Q: What companies has Nisanthan worked for in recent years?

In recent years, Nisanthan has worked for NBIC – Nisanthan BI Consulting and Hines Immobilien GmbH .

Q: Which industries is Nisanthan most experienced in?

Nisanthan is most experienced in industries like Real Estate and Banking and Finance .

Q: Which business areas is Nisanthan most experienced in?

Nisanthan is most experienced in business areas like Business Intelligence , Finance , and Information Technology . Nisanthan also has some experience in Operations , Sustainability Management , and Project Management .

Q: Which industries has Nisanthan worked in recently?

Nisanthan has recently worked in industries like Real Estate and Banking and Finance .

Q: Which business areas has Nisanthan worked in recently?

Nisanthan has recently worked in business areas like Business Intelligence , Finance , and Information Technology .

Recommended expert

Berlin, Germany

Check rate

Experience

May 2025 - Present

1 year 3 months

Berlin, Germany

Business Intelligence Consultant (freelance)

NBIC – Nisanthan BI Consulting

Advising companies on building, migrating and optimising BI and reporting landscapes (Power BI, SQL, Python, ETL)
5 client engagements in real estate and finance since 05/2025: taking over and stabilising existing reporting, automating recurring standard and management reports, building cash-flow models
Proposal and feasibility assessments for BI and reporting projects
Using AI-assisted development (Claude Code) to accelerate automation, tooling and web/app development
Custom ERP system
Problem: A client's core processes ran on scattered, siloed Excel files with no central data storage – error-prone, hard to scale and impossible to analyse end-to-end.
Approach: Captured the business processes and requirements, modelled the data and developed iteratively together with the business team.
Implementation: Built a tailored, web-based ERP system with a central database, role-based modules and automated reporting – delivered using AI-assisted development in Claude Code.
Timesheet app
Starting point: Time tracking based on an overgrown, macro-heavy Excel template – maintenance-intensive, single-user and error-prone.
Implementation: Migrated all functionality and VBA macros into a standalone web app with central data storage, multi-user support and automated reporting.
Cash-flow modelling
Starting point: The existing cash-flow model covered standing investments only; project developments were missing from steering.
Implementation: Built and extended the CF model to include project-development cash flows.
Optimisation: Reviewed and optimised existing CF models and expanded the KPI outputs for reporting and steering.

Apr 2019 - Jul 2025

6 years 4 months

Berlin, Germany

Director BI / Operations

Hines Immobilien GmbH

Owned development and operation of company-wide reporting for a real-estate portfolio of ~~50 properties (~~€4bn portfolio value)
Automated around 20 recurring reports, cutting manual effort by 70–80%
Managed onboarding and continuous enhancement of the BiSon.Box real-estate planning software (~30 users, 20 assets)
Designed comprehensive portfolio dashboards in Excel/VBA and Power BI for executive reporting
Built ESG dashboards in Power BI integrating Alasco data; co-developed a CapEx planning tool
Optimised complex cash-flow models for strategic planning and investment analysis
Developed tools for time tracking, compliance checks and cross-portfolio leasing tracking
German lead and point of contact for PRODA, Hines' globally rolled-out asset-management dashboard (~150 users, ~50 assets)
Supported the migration from on-premises Windows servers to a modern cloud infrastructure

Apr 2018 - Mar 2019

1 year

Berlin, Germany

Senior Financial Controller

Round Hill Capital

Developed a liquidation / valuation tool to support analysis of new investment opportunities
Monitored and analysed cash flows across multiple investment platforms
Created a lease tracker to improve transparency in portfolio controlling

Sep 2016 - Mar 2018

1 year 7 months

Berlin, Germany

Senior Asset Management Analyst

JLL Retail Asset Management (formerly Acrest Property Group)

Led a reporting team of 2, responsible for all asset-management reporting incl. strategic initiatives
Rolled out the BISon.Box real-estate planning software for ~~15 assets (~~€2bn) and ~15 users
Established standardised reporting structures and automation solutions for efficiency and data consistency

Jul 2015 - Aug 2016

1 year 2 months

Berlin, Germany

Asset Management Analyst

ACREST Property Group GmbH (JLL)

Established standardised reporting structures and implemented automation solutions
Data visualisation in Excel

Aug 2014 - May 2015

10 months

Berlin, Germany

Internship Asset Management

ACREST Property Group GmbH (JLL)

Developed an FTE calculation model for new projects based on KPI-driven inputs
Prepared and delivered reporting for Asset Management and Acquisitions teams

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Real Estate and Banking and Finance.

Real Estate

Banking and Finance

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Business Intelligence, Finance, Information Technology, Operations, Sustainability Management, and Project Management.

Business Intelligence

Finance

Information Technology

Operations

Sustainability Management

Project Management

Summary

Business Intelligence consultant with 10+ years of experience at the intersection of real estate, finance and data analytics. Specialised in Power BI, reporting automation and the design of scalable dashboard and ETL solutions. Combines deep domain and process know-how with modern, AI-assisted development – to turn data into reliable decisions.

Skills

It Skills

Excel / Vba
Power Bi / Dax
Power Query / Etl
Power Automate
Sql
Python

Tools & Platforms

Microsoft Fabric
Azure
Power Apps
Alasco
Ai-Assisted Development

Core Skills

Power Bi / Dax
Excel / Vba
Power Query / Etl
Power Automate
Sql
Python

Platforms, Tools & Methods

Microsoft Azure
Azure Sql
Azure Data Lake
Power Bi
Power Apps
Power Automate
Sharepoint
Teams
Microsoft 365
Pandas
Dax
Power Query (M)
Sql / T-Sql
Postgresql
Vba
Claude Code
Claude Cowork
Ai-Assisted Development
Prompt Engineering
Git
Github
Html / Css
Markdown
Node.Js
Data Modeling
Star Schema
Reporting Automation
Dashboard Design
Esg Reporting
Capex Planning
Cash-Flow Modelling
Alasco
Bison.Box

Languages

German

Native

Tamil

Native

English

Advanced

Education

Feb 2013 - Jun 2013

Aristotle University of Thessaloniki

Civil Engineering · Greece

Apr 2012 - Sep 2015

Bauhaus-University Weimar

M.Sc. · Building and Real Estate Management · Weimar, Germany

Oct 2008 - Mar 2012

Bauhaus-University Weimar

B.Sc. · Building and Real Estate Management · Weimar, Germany

...and 1 more

Certifications & licenses

Power BI Desktop Data Modeling and Reporting

Confex Training GmbH

Statistics

Experience

Total positions 6

Experience in Real Estate 12 y

Avg length 1 y 11 m

Longest experience 6 y 3 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Business Intelligence Consultant (freelance), Director BI / Operations, Senior Financial Controller

Main industries Real Estate, Banking and Finance

Main business areas Business Intelligence, Finance, Information Technology

Qualifications

Highest degree Master

Certifications earned 1

Profile

Created

July 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Nisanthan based?

Nisanthan is based in Berlin, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Nisanthan speak?

Nisanthan speaks the following languages: German (Native), Tamil (Native), English (Advanced).

How many years of experience does Nisanthan have?

Nisanthan has at least 12 years of experience. During this time, Nisanthan has worked in at least 6 different roles and for 5 different companies. The average length of individual experience is 2 years. Note that Nisanthan may not have shared all experience and actually has more experience.

What roles would Nisanthan be best suited for?

Based on recent experience, Nisanthan would be well-suited for roles such as: Business Intelligence Consultant (freelance), Director BI / Operations, Senior Financial Controller.

What is Nisanthan's latest experience?

Nisanthan's most recent position is Business Intelligence Consultant (freelance) at NBIC – Nisanthan BI Consulting.

What companies has Nisanthan worked for in recent years?

In recent years, Nisanthan has worked for NBIC – Nisanthan BI Consulting and Hines Immobilien GmbH.

Which industries is Nisanthan most experienced in?

Nisanthan is most experienced in industries like Real Estate and Banking and Finance.

Which business areas is Nisanthan most experienced in?

Nisanthan is most experienced in business areas like Business Intelligence, Finance, and Information Technology. Nisanthan also has some experience in Operations, Sustainability Management, and Project Management.

Which industries has Nisanthan worked in recently?

Nisanthan has recently worked in industries like Real Estate and Banking and Finance.

Which business areas has Nisanthan worked in recently?

Nisanthan has recently worked in business areas like Business Intelligence, Finance, and Information Technology.

What is Nisanthan's education?

Nisanthan holds a Master in Building and Real Estate Management from Bauhaus-University Weimar and a Bachelor in Building and Real Estate Management from Bauhaus-University Weimar.

Does Nisanthan have any certificates?

Nisanthan has 1 certificate: Power BI Desktop Data Modeling and Reporting.

What is the availability of Nisanthan?

Nisanthan is immediately available full-time for suitable projects.

What is the rate of Nisanthan?

Nisanthan's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.