Aurimas Griciūnas

Senior Solutions Architect

SwirlAI

Driving MLOps, Data Engineering and Machine Learning industry forward by helping professionals Level Up in these disciplines.

Founder & CEO

neptune.ai

Chief Product Officer

Head of Product

Driving MLOps industry forward by helping Neptune customers succeed in adopting MLOps best practices.

Transactie Monitoring Nederland (TMNL)

- Contributed to the development of end-to-end Machine Learning platform capabilities in a highly secure environment.
 - Focused on leveraging AWS SageMaker and supporting AWS services to enable scalable experimentation and model deployment.
 - Collaborated with the team to build reusable template libraries, streamlining the process of running ML experiments and deploying models efficiently and securely.

Senior MLOps Engineer

HomeToGo

- Led cross-functional teams of Cloud Engineers and Data Platform Engineers, driving key infrastructure and data initiatives.
 - Spearheaded a company-wide Cloud-Native Transformation initiative to modernize applications and infrastructure.
 - Championed the migration to Infrastructure as Code (IaC), standardizing infrastructure provisioning using Terraform for improved scalability, consistency, and automation.

Data Architect / Data Platform & Cloud Engineering Lead

- Led a Team of Data Engineers.
- Led a Team of Data Platform Engineers.
- Initiated and led a successful company wide Cloud Native Transformation.
- Migrated entire Data Platform Stack to Kubernetes. This included:

        - Airflow.
        - Superset.
        - Spark.
        - MLFlow.
        - Flink.
        - Airbyte.
        - DataHub.

- Introduced first Stream Processing applications that moved some of the Data Warehouse Processing stages upstream the pipeline.

Senior Data Engineer / Data Platform Team Lead

- Led a team of Data Engineers.
- Initiated and led a Data Warehouse migration from Redshift to Snowflake effort. It also included a refactoring of the Data Model.
- Oversaw Data migration from a Druid cluster to Redshift and later Snowflake.
- Introduced and rolled out Machine Learning Experiment Tracking System.
- Deployed and maintained first on-prem Kubernetes Clusters in the company.

Senior Data Engineer / Team Lead

- Led a successful implementation and optimisation of a custom Website Activity Tracking Ingestion Pipeline.
- Deployed and rolled out a company-wide Airflow Cluster.
- Led a full migration from Jenkins to Airflow for Data Engineering Pipelines.

Senior Data Engineer

Tesonet

Responsible for end-to-end development of ML-based products and big data solutions:

 - Identified business use cases suitable for machine learning and translated them into technical solutions.
 - Designed and implemented the full ML lifecycle, including data extraction, cleaning, validation, model training, packaging, and deployment.
 - Contributed to the architecture and development of scalable big data ingestion pipelines.
 - Set up and configured Kafka topics; developed real-time processing applications using Kafka Streams and Spark.

Senior Data Scientist/Engineer

Danske Bank

Projects I worked on:

-Affordability model enhancement using transaction data.
-Bringing transaction data into Balance Sheet stress-testing.
-Unlocking potential of transaction data throughout Risk Management function.
-Stress-testing of REA components and dynamic analysis on different credit portfolio levels.
-Process optimization and automation. Preparing models for production placement.

Senior Data Scientist/Analyst

Projects I worked on:

-Retail customer affordability project in Big Data analytics team.
-IFRS9 Life-time probability of default (LTPD) model development.
-IFRS9 Prepayment model development.
-IFRS9 impact on P&L analysis.
-IFRS9 and pre-IFRS9 ECL stress-testing and reporting.
-REA stress-testing and dynamic analysis on different credit portfolio levels.
-Process optimization by both improving old approaches and introducing new technologies.

Analyst

ADB Gjensidige

Was responsible for implementation of Solvency2 regulatory standards and providing required reports.

Actuary

Was responsible for generating business analysis reports for management.

Was responsible for calculation of Technical Reserves for Non-Life insurance products by applying different triangulation methods.

Junior Actuary

Follow me to learn about Data Engineering and ML Systems | Author of SwirlAI Newsletter | Public Speaker

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Leading Product Strategy.

TOON (Token-Oriented Object Notation) is out for some days now and it aims to make communication with LLMs more accurate and token-efficient.

The TOON topic is now one of the hottest news on the LLM market and it might actually matter.

𝗪𝗵𝘆 𝗜 𝘁𝗵𝗶𝗻𝗸 𝘀𝗼:

I was initially hesitant to cover this, potentially being another hype to quickly fade, but:

✅ The format has been shown to increase the accuracy of models while decreasing the token count. I was not sure if there were any accuracy retention studies made, it seems there were.
✅ Token efficiency is extremely important when working with Agentic Systems that require a lot of structured context inside of their reasoning chains. And we are moving towards a post-PoC world where there is a lot of emphasis placed on optimisation of the workflows.

𝗔 𝘀𝗵𝗼𝗿𝘁 𝘀𝘂𝗺𝗺𝗮𝗿𝘆:

- Token-efficient: typically 30-60% fewer tokens on large uniform arrays vs formatted JSON.
- LLM-friendly guardrails: explicit lengths and fields enable validation.
- Minimal syntax: removes redundant punctuation (braces, brackets, most quotes).
- Indentation-based structure: like YAML, uses whitespace instead of braces.
- Tabular arrays: declare keys once, stream data as rows.

An example:

𝘑𝘚𝘖𝘕 𝘧𝘰𝘳𝘮𝘢𝘵:

"shopping_cart": [
    { "id": "GDKVEG984", "name": "iPhone 15 Pro Max", "quantity": 2, "price": 1499.99, "category": "Electronics" },
    { "id": "GDKVEG985", "name": "Samsung Galaxy S24 Ultra", "quantity": 1, "price": 1299.99, "category": "Electronics" },
    { "id": "GDKVEG986", "name": "Apple Watch Series 9", "quantity": 1, "price": 199.99, "category": "Electronics" },
    { "id": "GDKVEG987", "name": "MacBook Pro 16-inch", "quantity": 1, "price": 2499.99, "category": "Electronics" }
  ]
}

𝘞𝘩𝘦𝘯 𝘦𝘯𝘤𝘰𝘥𝘦𝘥 𝘪𝘯𝘵𝘰 𝘛𝘖𝘖𝘕 𝘧𝘰𝘳𝘮𝘢𝘵:

shopping_cart: items[4]{id,name,quantity,price,category}:
    GDKVEG984,iPhone 15 Pro Max,2,1499.99,Electronics
    GDKVEG985,Samsung Galaxy S24 Ultra,1,1299.99,Electronics
    GDKVEG986,Apple Watch Series 9,1,199.99,Electronics
    GDKVEG987,MacBook Pro 16-inch,1,2499.99,Electronics

𝗥𝗲𝘀𝘂𝗹𝘁:

✅ 43% savings in token amount.
✅ Directly translates to 43% savings in token cost for this LLM input.

❗️ Be sure to know when NOT to use the format (and always test it for your application specifically):

- Deeply nested or non-uniform structures.
- Semi-uniform arrays.
- Pure tabular data.

ℹ️ I will be testing it in the upcoming weeks.

Let me know if you have already tested TOON and what are your takeaways! 👇

Founder @ SwirlAI • UpSkilling the Next Generation of AI Talent • Author of SwirlAI Newsletter • Public Speaker

𝗠𝗖𝗣 plus 𝗔𝟮𝗔, here is how they complement each other 👇

Protocol wars continue to rage, let's understand how Googles A2A (Agent2Agent) protocol is different from MCP and how they complement each other (read till the end).

𝘔𝘰𝘷𝘪𝘯𝘨 𝘱𝘪𝘦𝘤𝘦𝘴 𝘪𝘯 𝘔𝘊𝘗:

𝟭. MCP Host - Programs using LLMs at the core that want to access data through MCP.

❗️ When combined with A2A, an Agent becomes MCP Host.

𝟮. MCP Client - Clients that maintain 1:1 connections with servers.
𝟯. MCP Server - Lightweight programs that each expose specific capabilities through the standardised Model Context Protocol.
𝟰. Local Data Sources - Your computer’s files, databases, and services that MCP servers can securely access.
𝟱. Remote Data Sources - External systems available over the internet (e.g., through APIs) that MCP servers can connect to.

𝘌𝘯𝘵𝘦𝘳 𝘈2𝘈:

Where MCP falls short, A2A tries to help. In multi-Agent applications where state is not necessarily shared

𝟲. Agents (MCP Hosts) would implement and communicate via A2A protocol, that enables:

➡️ Secure Collaboration.
➡️ Task and State Management.
➡️ User Experience Negotiation.
➡️ Capability discovery - similar to MCP tools.

𝗛𝗼𝗻𝗲𝘀𝘁 𝘁𝗵𝗼𝘂𝗴𝗵𝘁𝘀:

❗️ Open protocols for Agent communication are important but they are just a piece of the picture, there will be a need for standards that govern all of the existing protocols and other missing pieces. E.g.

❓ How do we standardise tracing and Observability in multi-agent IOA systems?
❓ How do we retain the identity of the running job of an AI Agent instance if the communication standard is not unified in different parts of the pipeline?
❓ ... 

✅ More on this in my future posts, stay tuned!

Let me know your thoughts in the comments. 👇

Rajib Chakravorty

Enterprise Data Architect

NatWest Group through Icon Solutions

• Designed data marketplace for delivering data products aligning with enterprise data strategy.
• Established data design guardrails and standards in a data mesh framework for efficient data marketplace operations.
• Documented agile data modeling approach and guidelines, recommending tooling uplift for enhanced data design processes.

Data Development Lead

Lloyd's through Synechron

•	Collaborate with business stakeholders to identify, understand, and document business requirements.
•	Translate business requirements into conceptual data models, logical models and where appropriate physical models.
•	Validate and refine models using feedback from business stakeholders and subject matter experts.
•	Work closely with technology partners to ensure alignment between different levels of data models.

Data Modelling Consultant 

Beazley

•	Ensure users engage with the data model and understand how this will underpin central and federated data domains whilst adhering to Data Management Framework in Data Mesh
•	Analysing and translating business needs into long-term solution data models using Acord standards 
. Project delivery management using Jira

Senior Data Modeller

Schroders

•	Works across teams to identify existing data designs, patterns, tools, or techniques that may facilitate or expedite delivery.
•	Ensures solution data architecture artifacts are created in accordance with data architecture standards.
•	Works with Enterprise Data Architect to align on the bigger picture driving the data strategy.

Lead Solution Data Architect

Financial Conduct Authority through BDO Regulatory Solutions

•	Review current data maturity as per DCAM guidelines and develop standards and policies for compliance 
•	Review business & data processes for integration of business architecture and data architecture as per DCAM
•	Review the target operating model for the delivery of data architecture framework within FCA
•	Agree/define/validate ‘what good looks like’ for the documentation (e.g. standards for metadata, notes etc.) 
•	Develop plan for delivery, and co-ordinate and lead resources on initiation of delivery

HSBC

•	Maintaining and validating transversal information taxonomies using Collibra features.
•	Ensuring the coherence of Data Management Methods and Tools between different divisions/departments, and between business & technology using Collibra workflows and metamodel.
•	Assisting and supporting the meta-data documentation and management (e.g. data dictionaries, data traceability/lineage, trusted data sources)

Group Data Modeller, Data Strategy & Governance

Legal & General Investment Management (LGIM)

•	Work with Data Stakeholders, including data consumers, members of the Data Team and the wider business change team to gather requirements in the form of User Stories / Features / Epic for defining data TOM
•	Deliver analysis artefacts incl. user stories, with defined acceptance criteria 
•	Work closely with investment management professionals to understand data requirements and map data journeys through multiple layers of interface and integration

Business Data Analyst via Capita Business Services

Deutsche Bank through CGI

•	Assist in the definition of the Data Architecture Strategy for the firm 
•	Partner with the firms Data Governance teams to ensure that the Data Strategy meets regulatory demands 
•	Development and maintenance of the EDM, an Enterprise Data taxonomy for the firm 
•	Set and communicate the Data Modelling Standards for the firm 
•	Provide guidance, support and training on Data Modelling best practise and bank standards to other Data Professionals 
•	Partner with Business SMEs to deliver Logical Data Models representing the firms Data Assets 
•	Ownership, delivery and maintenance of centrally owned data models including those for the firms Architecture Meta-Data 
•	Build strong partnerships with Architects, Data Modellers and Data Stewards across the firm

Enterprise Blueprints

•	Remediation of  data during the customer lifecycle for a building society which includes documenting the current business process and system landscape and identifying the hot spots.
•	Study and document the current state architecture along with the identification of possible hot spots
•	Recommendation for remediation of the hotspots and liaising with the delivery team for implementation

Data Management Consultant

Building Enterprise Business Information Model (EBIM) using UML modelling standards in RSA  and integrating it with the business data models and data standards like ISO 11179,  ISO 20022, etc
Developing EBIM collaboratively with the Financial Industry initiatives like  FIBO 
Building the Data standards and Data Dictionary for BCBS 239 compliance

Business Data Architect - Risk & Finance (Contract)

Oversight and Implementation of Data definitions and Data lineage across  various countries. 
Hand holding country teams for data definitions, governance, data lineage and other standards.
Supporting the Global Risk CDO (Chief Data Officer) and Programme Manager to develop and deliver the data strategy and data governance framework for the Global Risk Function in line with regulatory requirements / priorities.

Senior Project Manager - Data Management - BCBS239  (Contract)

Rajib Chakravorty is a seasoned Data Enabler (Certified Agile Project Manager) with over 30years of experience in senior data management, strategy, and architectural roles across B2C and B2B sectors. Renowned for a history of working with prestigious organizations such as HSBC, Lloyds Bank, Natwest, Schroders, Lloyds of London and others. Rajib excels in driving strategic data initiatives and transformative IT solutions.
Key Areas of Expertise:
•	Data Strategy Leadership: Demonstrated ability to align enterprise data integration, governance frameworks, and architecture with organizational goals. Adept in tools like Collibra, Snowflake, and frameworks like Data Vault 2.0.
•	Regulatory Compliance Mastery: Deep understanding of compliance standards, including MiFID, BCBS239, GDPR, and ISO 20022, ensuring organizations meet regulatory obligations effectively.
•	Technical Prowess: Skilled in using UML notations, EA Sparx, and platforms like Azure Synapse for data modelling and governance with a focus on Data Marketplace.
•	Solution Architecture: Expertise in building robust architectures for data products, implementing operational changes for efficiency, and overseeing global program management.
•	Collaborative Leadership: Proven ability to motivate cross-functional teams, bridge gaps between business and technology, and deliver data-driven insights for decision-making.
Developing Enterprise Business Taxonomy(UML) using FIBO,BIAN, ISO 20022, IBM FSDM & Teradata FSLDM

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