The Challenge: Unstructured Onboarding Feedback

Most HR teams collect onboarding feedback, but it arrives in every possible format: survey free-text fields, emails to managers, Slack or Teams messages, comments in learning platforms, exit interviews, and notes from HR business partners. The result is unstructured onboarding feedback that lives in silos. You know there are issues, but it is hard to see exactly what is broken, for whom, and how urgently it needs fixing.

Traditional approaches rely on sporadic CSAT/NPS scores, manual reading of verbatim comments, or one-off Excel analyses from HR analysts. This might work for very small cohorts, but at scale it breaks down. Analysts cannot read thousands of comments every quarter, local HR teams interpret feedback differently, and by the time a PowerPoint summary is ready, the next wave of new hires is already going through the same problems. Without automation and intelligent text analysis, pattern detection across cohorts, locations, and roles simply does not happen.

The business impact is significant. Slow or ineffective onboarding increases time-to-productivity, frustrates managers, and quietly fuels early attrition. Critical issues — for example missing equipment, unclear responsibilities, or inconsistent expectations — keep repeating because HR only hears anecdotal complaints rather than seeing data-backed trends. Poorly understood onboarding quality makes it hard to justify investments in better enablement, manager training, or localized content. Over time, you lose competitive edge in talent retention and employer brand because new hires do not feel listened to.

The good news: this challenge is very solvable. Modern AI, and Gemini in particular, can process multi-format onboarding feedback at scale, extract themes and sentiment, and surface granular insights by role, location, or manager. At Reruption, we have seen similar dynamics in other HR and people-facing processes, and we know how to move from anecdotal feedback to a data-driven improvement loop. Below, you will find practical guidance on how to use Gemini to turn your unstructured onboarding feedback into a continuous improvement engine for HR.

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Our Assessment

A strategic assessment of the challenge and high-level tips how to tackle it.

From Reruption's work building AI-first HR solutions, we see the same pattern across organisations: they collect plenty of onboarding feedback, but lack a systematic way to analyse and act on it. Gemini is well suited for this problem because it can handle long-form text, mixed languages, and even attached documents, then summarise and classify them into clear, HR-relevant signals. Our perspective: the real value does not come from flashy dashboards, but from embedding Gemini into the onboarding workflow so that HR, managers and local teams continuously receive actionable insights, not just reports.

Treat Feedback Analysis as a Continuous Product, Not a Quarterly Report

Most HR teams treat onboarding feedback as a periodic reporting task: collect, analyse, present, forget. To get value from Gemini for onboarding feedback, you need to treat the insight layer as a product that evolves every month. Define who your "users" are (central HR, local HR, line managers, onboarding program owners) and what decisions they need to make based on feedback. This mindset shift helps ensure that any Gemini implementation is tied to real, recurring decisions, not abstract analytics.

Strategically, this means designing a feedback operating rhythm: how often insights are generated, how they are reviewed, and how changes are prioritised. Gemini can generate weekly or monthly syntheses by cohort, role or geography, but someone needs ownership for turning those into experiments or process updates. Consider assigning a "Feedback Product Owner" in HR who treats the onboarding feedback system as a living product, not a side activity.

Start with Clear Questions Before Feeding Data into Gemini

AI tools like Gemini are flexible, but without clear questions they will produce generic summaries. Before you integrate any data, define the strategic questions you want answered. Examples: "Which steps in our onboarding journey cause the most friction?", "Where do new hires feel least supported by their manager?", "What differences exist between remote and on-site onboarding experiences?" These questions become the backbone for your prompts, taxonomies, and dashboards.

Aligning HR, People Analytics, and business stakeholders on those questions is a crucial readiness step. It avoids a situation where each party wants different metrics and the AI setup becomes fragmented. Once the questions are clear, Gemini can be instructed to tag feedback by themes, map comments to specific onboarding stages, and surface root-cause patterns instead of vague sentiment scores.

Design a Governance Model for Sensitive People Data

Onboarding feedback is often rich with personal and sensitive information. Strategically, you need a governance model before pushing this data through Gemini-based workflows. Clarify what data is ingested, how it is pseudonymised or anonymised, and which user groups can see identifiable vs. aggregated insights. Involve your data protection officer and works council early to build trust and avoid friction later.

From a risk mitigation perspective, define guardrails around manager-level insights. For example, only show named manager views when cohorts exceed a certain threshold, and default to aggregated reporting for small teams. Use Gemini to automatically mask names and personally identifying details when generating summaries, so the focus stays on structural onboarding issues, not on individuals.

Prepare HR and Managers to Work with AI-Generated Insights

Even the best Gemini onboarding analytics will fail if HR and managers are not ready to use them. Strategically, you need to build data literacy and AI literacy together. HR business partners should feel confident interpreting themes, questioning potential biases, and translating insights into concrete actions with line managers. Managers should understand that AI-summarised feedback is an input to conversations with their teams, not a performance rating.

We recommend framing Gemini as an "insight co-pilot" rather than an evaluator. Train managers on how to respond to recurring feedback patterns in their teams and how to close the loop with new hires when changes are made. This cultural groundwork helps to embed data-driven onboarding improvements into everyday management practices instead of leaving them as HR-only initiatives.

Plan for Iteration: Your First Model Will Not Be Your Final Model

It is tempting to design the perfect taxonomy of themes, sentiments, and onboarding stages from day one. In practice, the most successful Gemini onboarding feedback implementations start simple and evolve. Define a small set of core themes (e.g., pre-boarding, day one, tools & access, role clarity, manager support, culture & inclusion) and let Gemini classify feedback accordingly. Then, review misclassifications and edge cases every few weeks and refine prompts or categories.

This iterative approach keeps risk low and aligns with a Co-Preneur mindset: ship something usable quickly, then improve based on real usage. It also helps you learn what granularity of insights HR and managers actually use. Over time, you might move from simple themes to role-specific or region-specific taxonomies, but only after proving that the basics deliver value.

Used thoughtfully, Gemini can turn your unstructured onboarding feedback into a continuous insight engine that informs program design, manager coaching, and content localisation. The key is not just technical integration but aligning questions, governance, and decision-making around the insights it produces. Reruption combines deep AI engineering with hands-on HR experience to design and embed these feedback systems so they actually change onboarding outcomes; if you want to explore what this could look like in your organisation, we are ready to work alongside your team rather than just advise from the sidelines.

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We build a proof of concept for your problem for 5,000–8,000€. You get a tangible demo instead of slides with promises.

Real-World Case Studies

From Banking to Human Resources: Learn how companies successfully use Gemini.

JPMorgan Chase

Banking
In the high-stakes world of asset management and wealth management at JPMorgan Chase, advisors faced significant time burdens from manual research, document summarization, and report drafting. Generating investment ideas, market insights, and personalized client reports often took hours or days, limiting time for client interactions and strategic advising.

Solution

JPMorgan addressed these challenges by developing the LLM Suite, an internal suite of seven fine-tuned large language models (LLMs) powered by generative AI, integrated with secure data infrastructure. This platform enables advisors to draft reports, generate investment ideas, and summarize documents rapidly using proprietary data.

Ergebnisse

  • Users reached: 140,000 employees
  • Use cases developed: 450+ proofs-of-concept
  • Financial upside: Up to $2 billion in AI value
  • Deployment speed: From pilot to 60K users in months
  • Advisor tools: Connect Coach for Private Bank
  • Firm-wide PoCs: Rigorous ROI measurement across 450 initiatives
Read case study →

AstraZeneca

Pharmaceuticals
In the highly regulated pharmaceutical industry, AstraZeneca faced immense pressure to accelerate drug discovery and clinical trials, which traditionally take 10-15 years and cost billions, with low success rates of under 10%. Data silos, stringent compliance requirements (e.g., FDA regulations), and manual knowledge work hindered efficiency across R&D and business units. Researchers struggled with analyzing vast datasets from 3D imaging, literature reviews, and protocol drafting, leading to delays in bringing therapies to patients.

Solution

AstraZeneca launched an enterprise-wide generative AI strategy, deploying ChatGPT Enterprise customized for pharma workflows. This included AI assistants for 3D molecular imaging analysis, automated clinical trial protocol drafting, and knowledge synthesis from scientific literature.

Ergebnisse

  • ~12,000 employees trained on generative AI by mid-2025
  • 85-93% of staff reported productivity gains
  • 80% of medical writers found AI protocol drafts useful
  • Significant reduction in life sciences model training time via MI300X GPUs
  • High AI maturity ranking per IMD Index (top global)
  • GenAI enabling faster trial design and dose selection
Read case study →

Zalando

Online Fashion Retail
In the online fashion retail sector, high return rates—often exceeding 30-40% for apparel—stem primarily from fit and sizing uncertainties, as customers cannot physically try on items before purchase . Zalando, Europe's largest fashion e-tailer serving 27 million active customers across 25 markets, faced substantial challenges with these returns, incurring massive logistics costs, environmental impact, and customer dissatisfaction due to inconsistent sizing across over 6,000 brands and 150,000+ products .

Solution

Zalando addressed these pain points by deploying a generative computer vision-powered virtual try-on solution, enabling users to upload selfies or use avatars to see realistic garment overlays tailored to their body shape and measurements . Leveraging machine learning models for pose estimation, body segmentation, and AI-generated rendering, the tool predicts optimal sizes and simulates draping effects, integrating with Zalando's ML platform for scalable personalization .

Ergebnisse

  • 30,000+ customers used virtual fitting room shortly after launch
  • 5-10% projected reduction in return rates
  • Up to 21% fewer wrong-size returns via related AI size tools
  • Expanded to all physical outlets by 2023 for jeans category
  • Supports 27 million customers across 25 European markets
  • Part of AI strategy boosting personalization for 150,000+ products
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bunq

Fintech
As bunq experienced rapid growth as the second-largest neobank in Europe, scaling customer support became a critical challenge. With millions of users demanding personalized banking information on accounts, spending patterns, and financial advice on demand, the company faced pressure to deliver instant responses without proportionally expanding its human support teams, which would increase costs and slow operations.

Solution

bunq addressed these challenges by developing Finn, a proprietary GenAI platform integrated directly into its mobile app, replacing the traditional search function with a conversational AI chatbot. After hiring over a dozen data specialists in the prior year, the team built Finn to query user-specific financial data securely, answer questions on balances, transactions, budgets, and even provide general advice while remembering conversation context across sessions.

Ergebnisse

  • 100,000+ questions answered within months post-beta (end-2023)
  • 40% of user queries fully resolved autonomously by mid-2024
  • 35% of queries assisted, totaling 75% immediate support coverage
  • Hired 12+ data specialists pre-launch for data infrastructure
  • Second-largest neobank in Europe by user base (1M+ users)
Read case study →

DBS Bank

Finance
DBS Bank, Southeast Asia's leading financial institution, grappled with scaling AI from experiments to production amid surging fraud threats, demands for hyper-personalized customer experiences, and operational inefficiencies in service support. Traditional fraud detection systems struggled to process up to 15,000 data points per customer in real-time, leading to missed threats and suboptimal risk scoring.

Solution

DBS launched an enterprise-wide AI program with over 20 use cases, leveraging machine learning for advanced fraud risk models and personalization, complemented by generative AI for an internal support assistant. Fraud models integrated vast datasets for real-time anomaly detection, while personalization algorithms delivered hyper-targeted nudges and investment ideas via the digibank app.

Ergebnisse

  • 17% increase in savings from prevented fraud attempts
  • Over 100 customized algorithms for customer analyses
  • 250,000 monthly queries processed efficiently by GenAI assistant
  • 20+ enterprise-wide AI use cases deployed
  • Analyzes up to 15,000 data points per customer for fraud
  • Boosted productivity by 20% via AI adoption (CEO statement)
Read case study →

Best Practices

Successful implementations follow proven patterns. Have a look at our tactical advice to get started.

Centralise All Onboarding Feedback into a Single Gemini Pipeline

The first tactical step is to gather all relevant onboarding feedback into one place so Gemini can analyse it consistently. This typically includes survey free-text fields, email feedback sent to HR or managers, messages from collaboration tools (Teams, Slack), comments from your LMS or onboarding platform, and notes from HR conversations when available and appropriate.

Use your existing integration stack or lightweight scripts to pull data into a central store (e.g., a data warehouse, Google BigQuery, or a secure document store). Tag each piece of feedback with metadata such as hire ID or anonymous identifier, role, department, location, manager, and onboarding stage or date. Then configure a scheduled process that passes new feedback batches to Gemini for analysis, so you avoid manual exports.

High-level workflow configuration:
1) Collect feedback from:
   - Survey tool API (e.g., Typeform, Qualtrics)
   - Email inbox (e.g., [email protected])
   - Slack/Teams channel exports
   - LMS/onboarding platform comments
2) Normalize into common schema:
   - feedback_text
   - channel
   - date
   - location, role, department
   - manager_id, cohort_id
3) Send batches daily/weekly to Gemini for processing via API.
4) Store Gemini outputs (themes, sentiment, priority) back into your warehouse.

Use Structured Prompts to Extract Themes, Sentiment and Onboarding Stages

Once data flows into Gemini, design prompts that consistently extract the dimensions you care about: themes, sentiment, severity, and onboarding stage. Treat the prompt as a small specification and refine it over time based on examples from your own feedback. The goal is to make Gemini's outputs directly usable for reporting and root cause analysis.

Below is an example prompt structure you can adapt to your context:

Example Gemini prompt for onboarding feedback analysis:
You are an HR analytics assistant helping improve employee onboarding.

Task:
Analyse the following onboarding feedback and respond in JSON with:
- primary_theme: one of ["pre-boarding", "first-day-experience", "tools-and-access",
  "role-clarity", "manager-support", "team-integration", "culture-and-inclusion",
  "learning-and-training", "other"]
- secondary_themes: list of additional relevant themes from the same list
- onboarding_stage: one of ["before-start", "week-1", "month-1", "month-3", "later"]
- sentiment: one of ["very-negative", "negative", "neutral", "positive", "very-positive"]
- severity: 1-5 (5 = urgent issue that blocks productivity)
- summary: 1-2 sentence summary of the feedback
- improvement_ideas: up to 3 concrete suggestions the company could implement

Feedback text:
"""
{{feedback_text}}
"""

Run this prompt across your feedback corpus via API or an internal tool and log the structured outputs. These structured fields become the basis for dashboards and automated alerts.

Build Role- and Region-Specific Dashboards for HR and Managers

After Gemini is classifying feedback consistently, visualise the results for the teams who need them. For HR, create dashboards that show trends over time: which themes are improving or worsening, which cohorts show higher negative sentiment, and which onboarding stages have the most high-severity issues. For line managers, provide filtered views showing feedback related to their teams (aggregated and anonymised where necessary).

A practical setup could be: HR sees a global "Onboarding Health" dashboard with filters for region, role family, and cohort, while managers receive a monthly email summarising the key patterns for their area. Use Gemini to generate the narrative commentary for these reports.

Example Gemini prompt for narrative dashboards:
You are assisting HR in communicating onboarding feedback insights
clearly to managers.

Based on the following aggregated data (JSON), write a concise summary
for managers including:
- top 3 positive themes
- top 3 issues with highest severity
- 3 concrete actions managers can take in the next month

Data:
{{aggregated_feedback_json}}

This approach turns raw analytics into understandable, action-oriented communication for non-technical stakeholders.

Set Up Automated Alerts for High-Severity or Repeating Issues

Gemini's severity and theme outputs can feed into simple alerting rules. For example, you might trigger an alert when more than five new hires in a cohort report "tools-and-access" issues with severity 4 or 5, or when negative sentiment about "manager-support" spikes in a specific location. These alerts can be pushed directly into HR ticketing systems or collaboration tools.

Configure a scheduled job that scans new Gemini outputs and applies rule-based checks. When conditions are met, the system can open an HR task, tag responsible HRBPs, and attach a Gemini-generated summary.

Example configuration logic (pseudo-code):
IF count(feedback where primary_theme = "tools-and-access" 
   AND severity >= 4 AND cohort_id = "2025-Q1") >= 5 THEN
   create_alert(
      type = "Access Issues Spike",
      owners = ["HR_Onboarding_Team"],
      summary = Gemini.summarise(feedback_subset),
      recommended_actions = Gemini.suggest_actions(feedback_subset)
   )

This ensures HR does not wait for quarterly reviews to fix structural blockers in the onboarding process.

Use Gemini to Draft Targeted Improvements and Communication

Beyond analysis, Gemini can help draft solutions: revised onboarding checklists, manager guidance, FAQ entries, or micro-learnings that directly address recurring issues. Feed Gemini with clustered feedback about a specific theme and ask it to propose updated onboarding steps or communication templates.

For instance, if many new hires report unclear role expectations in the first month, you can ask Gemini to propose a new "first 30 days" conversation guide for managers.

Example Gemini prompt for improvement content:
You are helping HR improve the onboarding process.

Here are 30 anonymised feedback comments related to "role-clarity"
from new hires in their first month:
{{role_clarity_feedback}}

Please:
1) Summarise the 5 most common root causes of confusion.
2) Propose a 30-day manager checklist to address these causes.
3) Draft a one-page "First 30 Days Expectations" guide that managers
   can share with new hires.

HR can then review, localise, and align this content with internal guidelines before rollout. This dramatically reduces the time from insight to tangible onboarding improvements.

Close the Loop with New Hires and Measure Impact

To make the system self-improving, use Gemini to help close the loop with employees and to measure the impact of changes. When you implement a new onboarding step or communication based on feedback, tag that change in your data model. Over the next cohorts, compare sentiment and severity for the related themes before and after the change.

Gemini can assist by generating follow-up survey questions focused on the updated area and by summarising whether sentiment has shifted. You can also use it to generate personalised follow-up messages acknowledging that feedback has led to change, which reinforces trust.

Example Gemini prompt for follow-up:
We recently changed our onboarding process based on prior feedback
about "tools-and-access" issues.

1) Draft 3 concise survey questions to evaluate whether the new
   process solved the main problems.
2) Draft a short message (max 120 words) we can send to recent
   new hires explaining what changed and thanking them for their
   honest feedback.

Over time, you should see measurable improvements such as a reduction in high-severity issues per cohort, higher onboarding satisfaction scores, and shorter time-to-productivity. Realistically, companies that implement these practices can expect within 3–6 months to reduce recurring onboarding issues by 20–40%, cut manual feedback analysis time by 60–80%, and give HR and managers a far clearer view of how onboarding is performing across roles and regions.

Build an AI system with us now!

We build a proof of concept for your problem for 5,000–8,000€. You get a tangible demo instead of slides with promises.

Frequently Asked Questions

Gemini is designed to work with unstructured and semi-structured data, which makes it a strong fit for onboarding feedback. You can feed it raw text from survey comments, email bodies, chat exports, or notes copied from HR systems. In a typical setup, a lightweight integration layer extracts the relevant text and metadata (role, location, date, channel) and sends it to Gemini via API.

Gemini then analyses the content for themes, sentiment, severity, and onboarding stage, returning structured outputs that can be stored in your HR analytics environment. Attachments like PDFs or docs can be converted to text before analysis, allowing you to include more formal feedback documents or reports in the same pipeline.

You do not need a large data science team to get started, but you do need a combination of HR ownership and basic technical integration skills. Typically, HR defines the goals, themes and governance rules, while an internal IT or data team (or a partner like Reruption) builds the data pipeline and connects Gemini.

The key roles are: an HR product owner for onboarding feedback, someone with integration/automation skills (to connect survey tools, email, collaboration platforms), and optionally an analytics or BI specialist to build dashboards. Reruption often works with existing IT teams to handle the Gemini prompts, API usage, and security configuration, so HR can focus on interpreting and acting on the insights.

For most organisations, the first meaningful results appear within 4–8 weeks if the scope is focused. In the first 1–2 weeks, you connect one or two main feedback sources (e.g., onboarding surveys and HR inbox) and design the initial Gemini prompts. Within a month, you can usually generate and review the first set of structured insights and basic dashboards.

Improvements in onboarding quality typically follow in the next 1–3 cohorts, once you begin acting on recurring issues that Gemini surfaces. Realistic timelines for measurable impact are 3–6 months for reductions in high-severity issues and manual analysis time, and 6–12 months for shifts in onboarding satisfaction, time-to-productivity, and early attrition.

The cost side mainly consists of three elements: Gemini usage (API or platform consumption), integration and setup work, and ongoing light maintenance. Compared to manual analysis, the investment is usually modest — especially if you already have basic integration infrastructure in place.

ROI comes from several angles: reduced HR analyst time spent reading and categorising comments, faster detection and resolution of onboarding issues that delay productivity, better manager support based on targeted insights, and ultimately lower early attrition and stronger employer brand. Even small improvements in retention or time-to-productivity can outweigh the running costs very quickly. For example, avoiding a handful of early replacement hires per year typically more than pays for a robust Gemini onboarding feedback pipeline.

Reruption works as a Co-Preneur alongside your HR and IT teams, not as a distant advisor. We start with a focused AI PoC for 9.900€ to prove that Gemini can reliably analyse your real onboarding feedback, using your surveys, emails and chat data. In this PoC, we define the use case, design and test prompts, build a lightweight pipeline, and deliver a working prototype plus performance metrics and an implementation roadmap.

Beyond the PoC, we can help embed the solution operationally: integrating additional data sources, setting up dashboards and automated alerts, defining governance with your compliance stakeholders, and training HR and managers to work with AI-generated insights. Our Co-Preneur approach means we take entrepreneurial ownership for shipping a solution that actually improves your onboarding — not just producing slides about what AI could do.

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