Starting a New Job in Science, Engineering or Manufacturing: Your First 90 Days

Before you start: building the foundations

A smooth first months in a new job days actually begins before day one. Most employers in manufacturing, engineering and scientific environments expect new starters to arrive prepared, curious, and safety-aware. In fact much of preparation you carried out for the interview will help.

Do your homework

Take time to understand:

• The company's products, processes, or research focus
• Their safety culture (vital in lab, plant, and production settings)
• Key terminology or equipment you’ll be using
• Current projects within your team

High-quality resources such as the Engineering Council can give you useful background on professional standards.

Review documentation early

Look over:

• • • SOPs (Standard Operating Procedures)
    • Health & Safety documentation
    • Quality management information
    • Any training materials provided pre-start

This will help you hit the ground running and avoid feeling overwhelmed during induction.

It’s also worth asking your new employer if they can share any useful information before you start — such as technical documents, process guides, SOPs, or induction materials.

Keep communicating with your new employer and Recruitment Consultant

How you communicate during the recruitment and offer stage is essential. Acting professionally, communicating clearly, and showing thoughtfulness throughout the process sets the tone for how your new employer will see you once you begin.

Start as you mean to go on: reply promptly to emails, return any paperwork on time, and maintain excellent communication. This not only makes the transition smoother but also builds trust and confidence before your first day.

If you hit problems with any part of the process talk to all parties a solution can often be reached.

Your consultant at Senex Recruitment can support you with this and our careers advice and blog has a wealth of information to support you through the recruitment process.

Your first month: listen, learn and integrate

The first month is about absorbing information, understanding expectations, and building relationships. It is essential to get this right.

Prioritise safety and compliance

In laboratory or production environments, safety is the first measure of job readiness.

Refreshing your knowledge of  health and safety at the UK Health & Safety Executive (HSE) is always worthwhile:

Shadow, observe and ask questions

Be visible, approachable, and curious. Questions show engagement, not weakness — especially when dealing with complex technical processes. Take notes, there will be a huge volume of information to learn.

Get to know your team

Whether you work with scientists, technicians, engineers, or operators, success in these sectors depends heavily on collaboration.
Introduce yourself to:

• Cross-functional colleagues
• Quality and regulatory team
• Maintenance and operational staff
• Project stakeholders

Understanding how your role connects to others helps you make better, technically astute and safer decisions.

Pro-tip: form your own opinion 

When starting a new role, seek out colleagues with a positive outlook and remember that every company, regardless of size, has a mix of personalities. You may encounter world-weary or negative employees, as well as curious or envious co-workers who ask probing questions about your salary or benefits.

Our advice is to form your own opinion of the company based on what was discussed during your interview and your own experience, rather than relying on gossip. Always keep a written record of what was agreed during the offer stage, and maintain confidentiality around these discussions. Avoid putting yourself in a difficult position by sharing details with colleagues whose intentions may not be in your best interest.

The second month: building competence and confidence

Once you’ve absorbed the basics, month two is about putting your learning into action.

Start taking ownership of tasks

Look for small tasks or responsibilities you can handle confidently. Demonstrating initiative early on builds trust — especially in project-based roles.

Track your progress

Many candidates find it useful to keep a short weekly log of:

• What you’ve learned
• Key procedures mastered
• Equipment you can now use independently
• Any challenges or areas for development

If you’re working toward chartership or professional accreditation one day, this documentation is gold, and is good practice moving forward with your career.

Deepen your technical understanding

There will be a range of relevant resources for your chosen sector so stay up to date with latest blogs and even the latest economic news, this will help you build credibility with your new employee and colleagues. For example, Resources like the Royal Society of Chemistry (for lab-based roles) offer excellent technical insights and CPD content while Make UK, the UK’s leading manufacturing representative has great industrial news updates. Senex Recruitment has recently produced a string of useful blog articles on this subject where we identified the main blogs and websites for our three key sectors Science, Engineering and Manufacturing.

• • • The top blogs and website for Science in the UK 
    • The top blogs and website for Manufacturing in the UK
    • The top blogs and websites for Engineering in the UK 

The third month: demonstrating value and impact

By month three, you should be transitioning from “new starter” to “productive contributor”.

Review expectations with your manager

Arrange a check-in to discuss:

• • • What’s going well
    • Any skills gaps
    • Opportunities to develop further
    • Goals for the next 3–6 months

Show understanding of the wider business

Manufacturing, Engineering and scientific employers appreciate people who think beyond their immediate desk or bench-space.
Consider how your work links to:

• • • Product quality
    • Manufacturing efficiency
    • Safety performance
    • Research outcomes
    • Customer requirements

Prepare to discuss probation 

Probation periods can vary, some last three months, others six. By this point, you may have already passed your probation or are well on your way. The three-month mark is a key opportunity to check that you’re on track. Remember, employment is an agreement between two parties, so ensure you’re fulfilling your responsibilities. Be honest with yourself and focus on improving in areas where you haven’t yet met agreed standards, after all, you cannot expect a pay rise if targets haven’t been achieved.

Equally important is communicating openly with your employer if you feel that key agreed terms have not been delivered by them within the expected timeframes. Always refer back to any written correspondence from the offer stage to support these discussions.

Pro-tip: Ensure you have everything agreed in writing

It’s essential to have any critical promises made during the interview documented in your offer letter wherever possible — this includes salary reviews, training opportunities, additional benefits. While verbal agreements carry weight, it’s important to have a written record to verify what has been agreed. Your Recruitment Consultant can assist with this process, but if you’re managing an offer independently, ensuring a documented agreement is in place is vital for clarity and protection. Without such verification it will make any review at three months more difficult, it it unlikely to be intentional but three to six months (depending upon you notice period), is a long time and things can be forgotten or change.

Final thoughts: making your first 90 days count

Your early months in a new technical role don’t need to be perfect — they just need to show:

• • • Willingness to learn
    • Respect for safety and quality
    • A collaborative mindset
    • Curiosity and initiative

With this combination, you’ll quickly establish yourself as a valuable team member with long-term potential.

Settling into a new role takes time, and from experience, this period can range from three to six months. Becoming truly proficient, or an expert, in your role takes considerably longer. It’s often said that mastery in any field, whether for athletes or professionals, can take up to 10,000 hours of deliberate practice. So there’s no need to feel immediate pressure to be the best in your team.

Focus instead on steady progress. Discuss clear timescales and expectations with your manager, and work consistently to meet them. Show genuine interest in your work, maintain a positive attitude, and engage with colleagues across the business to build strong relationships and understanding of the wider organisation.

Set small, incremental goals, daily, weekly, and monthly, and celebrate your progress along the way. Take each day as it comes, stay curious, and be patient with yourself. Over time, this approach will help you grow into your role, build confidence, and demonstrate both capability and commitment to your employer.