Recommended expert

Amar Sankar (Sankar) Kar

Prompt & Eval Playbook for CRM Conversations (Personal)

Amar Sankar Kar
Berlin, Germany

Experience

Jan 2025 - Dec 2025
1 year

Prompt & Eval Playbook for CRM Conversations (Personal)

  • Designed a compact framework to generate prompt–response sets for CRM lifecycle scenarios (onboarding, activation, retention, reactivation).
  • Included adversarial variants (ambiguous requests, conflicting instructions, policy traps).
  • Created a scoring rubric for factuality, tone, and coherence.
  • Developed a lightweight guideline for annotator alignment and disagreement resolution.
Oct 2024 - Present
1 year 5 months
Germany

Lead of Marketing & AI-Enabled MVP Product Development Expert

Givtastics (Impactboard)

  • Architected and implemented a multi-faceted agentic automation strategy across lead generation, hyper-personalized messaging, CRM, and social media to efficiently scale outreach and engagement for two MVP platforms.
  • Influenced product development and user experience by leveraging marketing analytics and customer feedback to refine the user journey and ensure alignment with market needs.
  • Contributed to business development and fundraising efforts by preparing investor decks and strategic messaging that successfully positioned the venture in the sustainable employee engagement sector.
Jan 2024 - Dec 2025
2 years

Impactboard Outreach Automation

  • Built a low-latency pipeline for lead qualification and message variants.
  • Introduced human-in-the-loop review and QA checklists prior to deployment.
Jan 2023 - Feb 2024
1 year 2 months
Berlin, Germany

Marketing Working Student (Analytics & Automation)

INAM – Innovation Network for Advanced Materials

  • Developed and implemented strategic automation workflows to streamline outreach and enhance engagement with members and partners.
  • Increased data-driven decisions by ensuring CRM data accuracy and integrity through comprehensive database management.
  • Identified and evaluated high-potential advanced materials startups, contributing to the innovation pipeline.
  • Produced editorial content and supported events (AdMaLab, AdMaCom, Future of Computing Conference).
Oct 2017 - Aug 2021
3 years 11 months
Kolkata, India

Founder’s Associate & Marketing Manager

IEM-GROUP

  • Built CRM automation for IEM Learning, reducing churn, boosting customer value and efficiency, scaling to 10,000+ active users, and creating 8,000+ course content videos.
  • Automated B2B marketing and PR for large-scale talk programs; individual events achieved 145,000+ views.
  • Streamlined production operations for video content, delivering 551 pieces and 229,854 total views.
  • Applied data-driven experimentation across campaigns (segmentation, cohorts, A/B tests) to lift order value, engagement, and conversion.

The Smart Power Talk Society (IEM Group)

  • Automated B2B outreach and PR for 40+ inspirational talks; a single event surpassed 145,000 views.

Summary

Part-time, remote-ready contributor for FRATCH-style AI Model Trainer work. Blend of domain expertise in CRM/lifecycle automation and analytical rigor from advanced studies in AI & Data. Experienced in curating training datasets, writing prompt–response pairs and edge cases, evalu- ating model outputs for factuality, tone, safety, and coherence, and maintaining clear annotation standards. Comfortable with red-teaming, error analysis, and iterative training to close per- formance gaps. Background across sustainability tech, deep-tech networks, and venture-backed programs.

Skills

  • Ai Training & Evaluation: Dataset Curation, Data Labeling/qa, Annotation Guidelines, Supervised Fine-tuning Prep, Prompt Engineering, Chain-of-thought Design (When Appropriate), Conversation Flow Design, Rl(sf/hf) Concepts, Safety/policy Evaluation, Adversarial Testing/red-teaming, Rubric-based Scoring, Inter-annotator Agreement, Error Taxonomies.
  • Analytics & Data: Sql, Python, Statistical Testing, Feature/label Definition, Data Validation, Telemetry Design, Experiment Design, A/b Testing, Kpi Dashboards, Cohort Analysis.
  • Nlp & Evaluation Concepts: Hallucination Detection, Grounding/retrieval Planning, Instruction Following, Toxicity/bias Checks, Multilingual Considerations, Prompt Invariance, Eval Set Versioning.
  • Domain Strength—crm & Automation: Lifecycle Strategy, Segmentation (Rfm, Behavioral), Journey Mapping, Churn/retention Models, Human-in-the-loop Workflows, Process Design, Quality Gates, Privacy-first Data Handling (Pii Minimization, Consent-aware Usage).
  • Collaboration & Standards: Spec Writing, Sops, Annotation Playbooks, Issue Tracking, Version Control, Documentation-first Communication, Cross-functional Handoffs.

Languages

English
Advanced
German
Intermediate

Education

Sep 2021 - Feb 2024

Hochschule Fresenius

M.Sc. in Engineering Management, Data Science & AI Specialization · Engineering Management · Berlin, Germany · 1.3

Oct 2019 - Jun 2021

University of Calcutta

MBA in Marketing Management · Marketing Management · Kolkata, India

Oct 2013 - Jun 2017

UEM, Jaipur

B.Tech in Mechanical Engineering · Mechanical Engineering · Jaipur, India

Certifications & licenses

Data Analytics

IBM, DataCamp

HubSpot Marketing Hub, CRM, Reporting & Digital Marketing

HubSpot Academy

International Marketing

Yonsei University

Marketing Analytics

DataCamp

N8N AI Agents & Automations

Udemy

Salesforce CRM

Udemy

Profile

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Amar Sankar based?

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

What languages does Amar Sankar speak?

Amar Sankar speaks the following languages: English (Advanced), German (Intermediate).

How many years of experience does Amar Sankar have?

Amar Sankar has at least 6 years of experience. During this time, Amar Sankar has worked in at least 5 different roles and for 3 different companies. The average length of individual experience is 1 year and 4 months. Note that Amar Sankar may not have shared all experience and actually has more experience.

What roles would Amar Sankar be best suited for?

Based on recent experience, Amar Sankar would be well-suited for roles such as: Prompt & Eval Playbook for CRM Conversations (Personal), Lead of Marketing & AI-Enabled MVP Product Development Expert, Impactboard Outreach Automation.

What is Amar Sankar's latest experience?

Amar Sankar's most recent position is Prompt & Eval Playbook for CRM Conversations (Personal).

What companies has Amar Sankar worked for in recent years?

In recent years, Amar Sankar has worked for Givtastics (Impactboard), INAM – Innovation Network for Advanced Materials, and IEM-GROUP.

Which industries is Amar Sankar most experienced in?

Amar Sankar is most experienced in industries like Education, Media, Entertainment and Publishing, and Information Technology (IT). Amar Sankar also has some experience in Manufacturing.

Which business areas is Amar Sankar most experienced in?

Amar Sankar is most experienced in business areas like Marketing, Business Intelligence, and Operations. Amar Sankar also has some experience in Quality Assurance (QA), Product Development, and Sustainability Management.

Which industries has Amar Sankar worked in recently?

Amar Sankar has recently worked in industries like Education, Media, Entertainment and Publishing, and Information Technology (IT).

Which business areas has Amar Sankar worked in recently?

Amar Sankar has recently worked in business areas like Marketing, Business Intelligence, and Operations.

What is Amar Sankar's education?

Amar Sankar holds a Master in Engineering Management from Hochschule Fresenius, a Master in Marketing Management from University of Calcutta and a Bachelor in Mechanical Engineering from UEM, Jaipur.

Does Amar Sankar have any certificates?

Amar Sankar has 6 certificates. Among them, these include: Data Analytics, HubSpot Marketing Hub, CRM, Reporting & Digital Marketing, and International Marketing.

What is the availability of Amar Sankar?

Amar Sankar is immediately available part-time for suitable projects.

What is the rate of Amar Sankar?

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

How to hire Amar Sankar?

To hire Amar Sankar, click the Meet button on the profile to request a meeting and discuss your project needs.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

1000
750
500
250
Market avg: 830-990 €
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.