Your first day in finance is crucial: first impressions, team integration, and learning the unwritten codes of the industry. Here is how to succeed in your first weeks and start your career on the right foot.
🎯 You are almost there: After securing the job with a perfect resume, here is how to shine from day one.
Before Your First Day (T-Minus 7 Days)
Mental and Physical Preparation
Sleep debt recovery:
- Sleep 8-9 hours a night the week before
- You will soon be working 80-100 hours a week, so arrive rested
- Last weekend: maximum relaxation
Technical review:
- Refresh your valuation basics (DCF, comps, LBO)
- Rebuild 2-3 Excel models to reactivate your muscle memory
- Read the company's annual reports (understand the business)
- Finance news: the latest deals and markets
Logistics:
- Scout your commute (do a test run on Sunday)
- Prepare your outfits for week 1 (five impeccable suits)
- Buy supplies: notebooks, quality pens
- Charge all your devices (laptop, phone, iPad)
The Right Mindset
The 3 golden rules:
- Humble confidence: Confident but never arrogant
- Sponge mode: Absorb EVERYTHING (processes, culture, people)
- Proactive but patient: Show initiative without overstepping
Mindset: "I am here to learn and add value, not to prove I am the smartest."
Day One: The Launch
Morning (8:00 AM – 12:00 PM)
Arrival (7:45 AM recommended):
- 15 minutes early = on time in finance
- On time = late
- Late = catastrophe
What usually happens:
8:00-9:00: IT setup
- Laptop, email, system access (Bloomberg, FactSet, intranet)
- Multiple passwords (write EVERYTHING down neatly)
- Phone setup
9:00-11:00: HR onboarding
- Paperwork (contract, health insurance, badges)
- Presentation of the company, its values, and compliance
- Office tour
11:00-12:00: Meeting the team
- Introductions to colleagues (memorize ALL the names)
- Your assigned "buddy" / mentor
- First impression is CRITICAL
💡 First-contact tips:
- Firm handshake + smile + eye contact
- "Nice to meet you, [First name]" (use first names)
- Listen more than you talk
- Take discreet notes (names + roles)
Afternoon (2:00 PM – 7:00 PM+)
2:00-4:00: Initial training
- Team processes
- Templates (pitch books, Excel models)
- File organization (folder structure)
- Tools (where to find what)
4:00-7:00: First assignment (if you are lucky)
- Usually simple: research, data collection, formatting
- Goal: testing your rigor and speed
- Over-deliver (finish before the deadline, add insights)
Questions to ask on day one: ✅ "What is the best way to communicate with you? (email, Slack, Teams)" ✅ "What are your expectations for my first 30 days?" ✅ "Is there any reading or documentation I should prioritize to get up to speed?" ✅ "What time does the team usually arrive in the morning?" (so you can adapt)
Questions NOT to ask on day one: ❌ "What time do people usually leave?" (red flag) ❌ "When do we talk about my bonus?" (way too early) ❌ "Can I work from home?" (not yet)
📊 Strengthen your foundation: Master advanced Excel skills to be operational immediately.
Week One: Observation and Learning
Your Primary Objectives
Priority #1: Absorb the culture
- Observe how people communicate
- Identify decision-making processes
- Understand team dynamics
- Spot the unwritten rules
Priority #2: Deliver flawless first work
- Your first deliverable defines your reputation for six months
- Have your buddy review it before it goes to your manager
- Zero errors acceptable
- Anticipate the deadline (deliver 10% early if possible)
Priority #3: Build relationships
- Have lunch with a different colleague every day
- Ask intelligent questions
- Offer help (even when you are swamped)
- Remember personal details (kids, hobbies) → bonding
Typical Week 1 Tasks
Research & data collection:
- Finding comps for valuation
- Collecting financial data (Bloomberg, CapIQ)
- Reading analyst reports
- Sector benchmarking
Formatting & quality checks:
- Formatting pitch books (alignment, fonts, colors)
- Checking consistency across slides
- Fact-checking figures
- Bibliography / sources
Simple analysis:
- Calculating multiples (EV/EBITDA, P/E)
- Analyzing bond spreads
- Comparing stock performance
- Simple Excel tables
What is being tested:
- Your attention to detail (zero errors?)
- Your speed (done in 3 hours or 8?)
- Your proactivity (just executed, or added value?)
- Your communication (did you flag problems? ask for feedback?)
Fatal Errors to Avoid in Week 1
❌ Arriving late (even once is a bad signal) ❌ Not taking notes (asking the same question twice is bad) ❌ Criticizing existing processes ("At my internship, we did it better...") ❌ Name-dropping ("At HEC we learned that..." is irritating) ❌ Overconfidence ("I already know how to do that" → followed by an error) ❌ Leaving at 6 PM (even with nothing to do, observe the team's hours) ❌ Personal phone (visible social media or texting looks unprofessional)
💼 Go deeper: Brush up on the technical valuation questions you might encounter in hallway conversations.
Month One: Proving Your Value
Goals for the First 30 Days
Technical: ✅ Master internal tools (templates, databases) ✅ Understand the deal process from A to Z ✅ Be able to build a basic pitch without help ✅ Know your 3-5 focus sectors
Relational: ✅ A 1-on-1 with every team member ✅ Identified the influencers (not just the hierarchy) ✅ A reputation as "reliable, rigorous, fast" ✅ A solid buddy/mentor relationship
Cultural fit: ✅ Understood the unwritten rules (e.g., are emails after 11 PM acceptable?) ✅ Adapted your communication style ✅ Joined social events (lunches, after-work drinks)
The Quick Wins to Impress
1. Create value-add without being asked
Example: Your manager asks, "Give me the comps for [Company X]."
Basic level: A comps table Impressive level: A comps table + 1 slide of insights + suggested adjustments
2. Anticipate questions
During a meeting, an MD says: "We should look at whether..." → You have already prepared the analysis (sent within 2 hours after the meeting)
3. Improve processes
Spot an inefficient repetitive process → create a template or macro → propose it to the team
4. Become the go-to person on a topic
Choose a niche (e.g., the biotech sector, a specific structured product) → deep dive → become the junior "expert"
The "Trial by Fire": Your First Weekend at the Office
It is inevitable: Your first weekend of work will come (often in week 2 or 3).
How to handle it:
Mindset:
- It is normal, not a punishment
- An opportunity to prove your work ethic
- The whole team is there (solidarity)
Preparation:
- Warn family and friends from Friday
- Sleep enough on Friday night
- Bring snacks and caffeine
- Outfit: business casual is acceptable on weekends
Performance:
- Arrive at 9 AM on Saturday (unless briefed otherwise)
- Stay until the job is done (don't leave before the seniors)
- Maintain quality despite the fatigue
- Positive attitude (no complaining)
After the weekend:
- Debrief on Monday: "What did you learn?"
- No martyrdom ("I worked 18 hours on Saturday!") → unprofessional
- Just deliver and move on
The Unwritten Codes of Finance
Communication
Email etiquette:
- Reply within 2 hours during business hours
- If it takes more than 24 hours, apologize
- Clear subject lines ("Review needed: [Project] - Due [Date]")
- Zero typos, professional, concise
Meeting behavior:
- Arrive 2-3 minutes early
- Laptop and phone silenced (except for notes)
- Take notes (shows engagement)
- Speak only if you add value
Hierarchy:
- Analyst → Associate → VP → Director → MD
- Respect the chain of command (don't bypass your Associate to go straight to the MD)
- Exception: the MD asks for you directly
Appearance and Presentation
Dress code:
- Weeks 1-4: Full suit every day (safe)
- After that: Observe the team and adapt
- Client meetings: ALWAYS a full suit
- Weekends: Business casual (chinos + shirt)
Grooming:
- Professional haircut
- Beard either clean-shaven or impeccably trimmed
- Clean nails
- Discreet perfume or cologne (or none at all)
Work Ethic Signaling
Positive signals:
- Emails early in the morning (7 AM) and late at night (11 PM) show dedication
- Never complain about workload
- Volunteer for difficult projects
- A "yes" attitude (then deliver)
Negative signals:
- Regularly leaving at 6 PM (even with nothing to do)
- Refusing assignments ("I'm working on something else")
- Complaining about hours or weekend work
- Suspicious sick days (Monday mornings...)
🤝 Integrate early: Develop your internal network starting in your first month.
Managing Your First Hardships
A Major Error: How to React?
You WILL make mistakes. That is normal. What matters is your reaction.
Bad reaction: ❌ Hiding the error ❌ Blaming someone else ❌ Making excuses ("I was tired") ❌ Downplaying ("It's no big deal")
Good reaction: ✅ Alert your manager immediately ✅ Take full ownership ("It's my mistake") ✅ Present a solution or correction ✅ Explain how you will avoid it in the future ✅ Learn and move on
Error email template:
[Manager],
I identified an error in [deliverable]: [precise description].
Impact: [what the impact is]
Correction: [what I have already done / my plan]
Prevention: [how I will avoid this in the future]
Sorry for the error. I am available to discuss it.
[You]
Early Signs of Burnout
Red flags:
- Under 5 hours of sleep several nights in a row
- Unusual irritability
- Multiple silly mistakes
- Constant anxiety
- Loss of motivation
Immediate actions:
- Talk to your buddy or mentor (not directly to the big boss)
- Prioritize sleep (6 hours minimum, non-negotiable)
- 30 minutes of exercise a day (non-negotiable)
- Weekend OFF if possible (at least one day every two weeks)
Mindset: It is a marathon, not a sprint. Lasting three months in burnout and then cracking is worse than managing your energy.
Imposter Syndrome
You will feel: "I'm not good enough, I'm going to get fired, the others are better."
Reality: 70% of finance juniors feel this. You are here because you ARE qualified.
Strategies:
- List your wins every week (tangible proof)
- Ask for regular feedback (often better than you think)
- Talk to your buddy (they probably felt the same)
- Focus on progression, not perfection
💰 Long-term perspective: Check salaries by experience level to stay motivated.
30-60-90 Day Checklist
30 Days
✅ Mastered internal tools and templates ✅ Delivered 5+ assignments with zero errors ✅ Had a 1-on-1 with every team member ✅ Identified 1-2 areas of expertise to develop ✅ A reputation as reliable and rigorous ✅ Understood team dynamics and culture
60 Days
✅ Autonomous on standard tasks (comps, research, formatting) ✅ Started contributing ideas in meetings ✅ A solid mentor relationship (weekly check-ins) ✅ Handled your first weekend of work smoothly ✅ Identified improvement opportunities (processes/tools) ✅ Extended your network (other teams, departments)
90 Days
✅ Able to manage a small project end-to-end with minimal supervision ✅ Positive review feedback ✅ Seen as a "contributor" (no longer just a "learner") ✅ Started mentoring a more junior analyst (if applicable) ✅ A clear vision of your goals for the next 6-12 months ✅ Cultural fit confirmed
Conclusion
The first 90 days determine your reputation and your career. In an ultra-competitive environment, you only get one chance to make a good first impression.
The 3 pillars of success:
- Technical excellence: Zero errors, anticipation, absolute rigor
- Soft skills: Communication, teamwork, humility
- Work ethic: Availability, positive attitude, reliability
Reassuring stat: If you get through the first 90 days without a major incident and with positive feedback, you have a 90% chance of succeeding long term in the role.
Final mindset: These 90 days are intense but temporary. Give 110%, absorb everything, and build a solid reputation. After that, you can gradually adjust and find your rhythm.
You will make it. Thousands have done it before you. Good luck!