Tech Career Advice

Topic	Value and condition	Planning use
Competency questions	STAR approach: situation, task, action, result	Write each story in that order before any behavioural round.
Resume versus interview	Do not repeat resume bullet points in the interview	Treat the resume as the record and the interview as the place for the story behind it.
Questions for the interviewer	At least five prepared	Draft the list ahead of time so some questions remain after the interviewer answers others.
Cost of a bad hire	No universal dollar amount or salary percentage	Build a company-specific estimate instead of quoting a headline number.
Recruiting and onboarding example	$3,600 for recruiting, recruiter and manager time, and onboarding, before performance issues or extra management time	Read it as an illustration of visible costs only, never as a total.

The interview figures come from Smoothstack’s interview tips, and the bad-hire figures from Lever’s article on the cost of a bad hire.

Career advice for tech professionals comes down to matching effort to your stage: polish the resume and your stories before applying, prepare interviews and offers deliberately, and, if you hire, measure hiring mistakes with a company-specific model.

Job seekers who are still mapping the process can start with how to find a tech job. Hiring managers and recruiters will find the employer side near the end of this guide, because the same interview looks very different from each side of the table.

Choosing where to start

The most useful starting point depends on where you are in the process, not on how senior you are. A strong interviewer with a weak resume never reaches the interview, and a polished resume cannot rescue an unprepared conversation. Pick the stage that is currently your bottleneck and work outward from there.

You are not sure tech is the right move. Begin with the career change section, which covers entry routes, the role of a degree and the doubts that tend to follow a switch.
You are applying but hearing nothing. Work on the resume, profile and supporting materials before sending more applications. More volume rarely fixes a document that does not make the case.
You have interviews booked. Go straight to the interview section. Preparation done in the days before a screen has more effect than any change to your resume at that point.
You have an offer. Read the negotiation section before replying. The first response sets the tone of the conversation.
You hire for a tech team. Jump to the cost of a bad hire. It explains why a single headline percentage is a poor planning tool and what to measure instead.

Across all five situations, one principle holds. Every stage tests whether you can show evidence of what you have done, and a good plan collects that evidence early so that it can be reused in the resume, the profile, the interview and the offer discussion.

Resume and application materials

Application documents answer a narrow question for a busy reader: should this person be interviewed for this role? Each document has a different job, and the most common mistake is making them all say the same thing.

Writing the resume

A tech resume works best as a concise record of outcomes, not a list of duties. Lead each entry with what changed because of your work, then name the tools involved. That order lets a recruiter see impact first and a technical reviewer find the stack second. The full approach is in how to write a tech resume.

Format matters because many employers screen documents through applicant tracking software. Coaching provider TechTalk UK lists building an ATS-proof CV as part of its individual coaching, which shows how routinely compatibility is treated as a separate task from writing good content. Keep layouts plain, use standard section titles and avoid placing key details only inside graphics.

Resume and interview also divide the work between them. Smoothstack advises candidates not to repeat the bullet points from the resume during the interview. The practical consequence is that every resume bullet should have a story behind it that adds detail, context or a decision the bullet could not fit.

A printed resume held on a clipboard. A reviewer reads a resume as a short record, so each line needs a fuller story ready for the interview.

Skills and keywords

List the skills you can discuss at depth, and be selective about the rest. Anything on the page is a fair target for a technical question, so a long list of tools you have only touched can cost more than it gains. Group skills by category, such as languages, platforms and methods, so a reader can scan to the area that matches the posting. The guide to technical skills to put on a resume explains how to decide what earns a place.

Cover letter and portfolio

The cover letter is the one document where you can explain a choice: why this role, why this company, and why your background fits even if the job titles do not match. If you are moving between disciplines or have a gap, a short letter is the place to connect the dots. See how to write a cover letter for a tech job for structure.

A portfolio suits candidates whose work can be shown, and it matters most when job history is thin. Choose a small number of projects you can explain end to end, including the problem, your decisions and what you would change. How to build a tech portfolio covers selecting and presenting that work.

Online profile and networking

Your online profile is the version of your resume that people find without you sending it. Its job is consistency: titles, dates and claims should match the resume, so no reader has to wonder which version is accurate.

Building the profile

Write the headline for the role you want, not only the role you hold. A short summary that states your focus, the kind of problems you work on and the tools you use will serve both recruiters searching by keyword and people who land on your page from a referral. Add projects and links where the platform allows, since they give a reader something to check.

A professional networking page open on a phone. Many people see a profile on a small screen first, so the headline and opening lines carry the most weight.

Networking without awkwardness

Networking works best as a series of specific, small requests. A message that asks for a quick view on one clearly stated question is easier to answer than a request for general help. Follow up with a result, such as what you did with the advice, because that is what turns a single reply into an ongoing contact.

Direct your effort where the return is clearest:

People in roles you want. Ask how they got there and what the work involves day to day. This tests your own interest before you commit to applications.
Former colleagues. They can speak to your work with credibility, which a stranger cannot. A short, specific note works better than a broad announcement that you are looking.
Recruiters. Keep your focus statement short and current so they can place you quickly. A recruiter who knows what you want can pass the right roles and ignore the wrong ones.

Networking and job search feed each other, and the steps are laid out in the guide to how to find a tech job.

Interviews

An interview tests judgement and communication as much as knowledge. Preparing for both is the difference between a candidate who knows the material and one who can show it under time pressure.

Preparing for the conversation

For competency questions, use the STAR approach that Smoothstack recommends for sharing successes and achievements: situation, task, action, result. The structure stops answers from drifting into background and keeps the result, which is what the interviewer wants, at the end where it lands. Prepare a small bank of stories, then adapt them to the question instead of memorising scripts. The wider routine is in how to prepare for a tech interview.

Choose stories that show different strengths, such as a technical decision, a disagreement, a failure and something you learned. A failure story is often the most persuasive when it ends with a specific change in how you work.

Note-taking across a table during a hiring conversation. Writing down the interviewer’s questions and priorities makes the closing questions more specific.

Technical rounds

Technical rounds reward practice in the format you will face. A live coding exercise, a conversation about past projects and a design discussion each reward different habits. Narrate your reasoning, state assumptions and ask clarifying questions before you start. Start with how to answer technical interview questions for the general method.

Coding rounds. Practise solving problems aloud and checking your own work. The step-by-step plan in how to prepare for a coding interview suits candidates facing live exercises.
Design rounds. These suit mid-level and senior candidates, where the interviewer cares about trade-offs more than a single correct answer. See system design interview tips.
Project discussions. Rehearse the story behind each major project, including what you would change now. This is where the resume bullets should be extended rather than repeated.

Hiring teams that define role outcomes and scoring anchors before sourcing begin, as ConnectDevs recommends, will probably build rounds around those outcomes. A candidate can use that: ask early what success in the first months of the role looks like, then aim answers at those outcomes.

Questions to ask the interviewer

Smoothstack suggests preparing at least five questions for the interviewer. A longer list is a safeguard, because the conversation will answer some of them. Aim for questions that reveal how the team works, how performance is judged and what the role needs, not questions answerable from the careers page. The full list is in questions to ask in a tech interview.

Offers and salary negotiation

Negotiation starts before the offer and continues after it. The aim is a package you can accept with confidence, reached without damaging the relationship you are about to start.

Before the offer arrives

Decide in advance what matters beyond the base figure. Responsibilities, learning opportunities, flexibility and growth can outweigh a small difference in pay, and knowing your priorities makes the discussion calmer. Employers also see pay as part of a bigger picture: ConnectDevs notes that the U.S. Bureau of Labor Statistics publishes employer compensation costs split by wages and benefits. That split is a reminder to look at the whole package, not the headline salary alone.

Skills for this stage can be learned. TechTalk UK describes its career accelerator course as covering networking, applications, interviews and negotiating your salary, which shows negotiation is commonly treated as part of the same job-search skill set as the earlier stages.

Responding to the offer

A measured reply keeps options open. Thank the employer, confirm you are interested and ask for the full details in writing. Then take time to consider before giving an answer. If you want to negotiate, tie your request to the role’s outcomes and your evidence, not to personal need. A request that says what you will deliver is easier to approve than one that says what you want.

Negotiate the package, not one number. If base pay is fixed, other elements may be adjustable, and asking about them is reasonable.
Keep the tone collaborative. You are agreeing terms with the people you will work with, so direct and courteous requests tend to land better than ultimatums.
Know your alternatives. A clear view of your other options tells you when to accept and when to decline politely.

Candidates who find this stage uncomfortable can rehearse it with a coach, and a later section compares what coaching can include.

Career change and entry-level routes

Moving into tech from another field is a sequence of decisions, not a single leap. The decisions that matter most are which role to aim at, how to prove ability without job history and how to explain the move to an employer.

Planning the move

Write the plan down and keep it visible. A notebook with the target role, the skills you have, the skills you lack and the next concrete step turns an abstract ambition into a list you can act on. Review it regularly and cross things off. The full process is in how to transition into a tech career.

A notebook with sticky tabs beside a laptop. Sectioned notes make it easy to separate the target role, current skills and the next action.

Degree or no degree

A degree is one route in, not the only one. If you do not have one, the decision to weigh is what evidence can replace it: projects, certifications you can discuss, relevant work and referrals. The guide to how to get into tech without a degree sets out those alternatives and who each suits.

Landing a first role

Entry-level searches reward breadth in applications and depth in preparation. Target roles whose descriptions match what you can already show, and use a portfolio to fill the gaps in your history. The details are in how to get an entry level tech job.

Handling self-doubt

Career changers often feel they do not belong in rooms full of experienced colleagues. That feeling is common and manageable, and it is worth dealing with early because it can lead people to undersell themselves in interviews and negotiations. The guide to imposter syndrome in tech covers practical ways to keep it from steering your decisions.

Mentorship and coaching

Mentorship and coaching both give you an outside view of your plan, but they work differently. A mentor is usually someone further along in your field who shares judgement over time. A coach is typically a paid professional who works through a defined programme.

Mentorship

The best mentoring relationships grow from specific questions. Bring a real decision, such as which offer to take or how to approach a hard conversation, and ask how the mentor would think it through. Respect their time by preparing, and report back on what happened, so the relationship continues because it is useful to both people.

An informal conversation with mugs in hand. Mentoring often works best as a relaxed exchange built around a concrete question.

Paid coaching

Coaching suits people who want structure and accountability. TechTalk UK describes individual support from career coaches and industry experts, and publishes prices for its programmes. They serve as one reference point for what a provider might include, not a standard for the market.

Option	Price and scope	Planning use
Starter programme	£599, aimed at landing interviews, with a 1-hour strategy session	Suits people who need direction on applications and a plan, but not full guidance through to an offer.
Ultimate programme	£1,199, aimed at landing a job offer	Suits people who want support through interviews and the offer stage, including negotiation.
Career accelerator course	8+ hours covering networking, applications, interviews and salary negotiation	Suits self-directed learners who want a structured course instead of individual sessions.

Prices and scope in the table are taken from TechTalk UK’s individual coaching page.

Before paying, compare what each programme includes against the stage you are actually stuck at. If your resume is the problem, a resume-focused session may be enough. If interviews are the issue, look for practice with feedback. The guide to choosing a tech career coach sets out the questions worth asking a provider.

For hiring teams: the cost of a bad hire

Hiring teams have the opposite problem from candidates: they must judge ability from a short sample of evidence. The cost of getting that judgement wrong is real, but quoting a single number for it hides more than it reveals.

Printed application forms on a clipboard. The hiring decision starts at this screening stage, well before any replacement or recovery cost appears.

What counts as a bad hire

ConnectDevs draws a useful line: a bad hire is not someone who needs normal coaching or makes an early mistake. It is a hire that creates measurable replacement or recovery cost. That definition matters because it separates the ordinary friction of onboarding from outcomes that can be counted.

Why there is no universal figure

Lever states plainly that there is no universal cost of a bad hire, and ConnectDevs says there is no defensible universal percentage. ConnectDevs also notes that a commonly quoted rule of thirty percent of first-year earnings lacks a matching primary method from the U.S. Department of Labor. For planning, that means a company should not borrow a percentage and call it an estimate. Use a range built from your own role, team and processes.

Lever adds that recruiting is only part of the bill. It gives an illustration of recruiting, recruiter and manager time, and onboarding adding up to $3,600, all before performance issues or extra management time. It also warns that calling every dollar of salary a loss makes the final number bigger, so counting full salary as waste inflates the figure.

Building a company-specific estimate

ConnectDevs recommends modelling the categories separately, instead of using annual salary as a proxy for each one. Its components give a practical checklist:

Separation. The cost of ending the employment.
Vacancy. The period when the role is unfilled.
Productivity gap. The difference between expected and actual output.
Manager and team time. Effort spent supporting, correcting and covering.
Rework. The cost of fixing or redoing the person’s output.
Replacement recruiting. The cost of finding a successor.
Onboarding and ramp. The cost of bringing a new person up to speed.

ConnectDevs works through a hypothetical company model with a modelled total of $65,800. That figure is a hypothetical from one article, not a benchmark, and it shows how the categories combine rather than what your own hire would cost. Collect your own inputs for each category and keep a range, since several of them depend on the role and how quickly the problem is noticed.

Reducing the risk before sourcing

The most direct prevention is clarity. ConnectDevs advises defining role outcomes and scoring anchors before sourcing begins, so every interviewer judges candidates against the same evidence. A scorecard tied to outcomes also makes interview debriefs shorter and more honest, because disagreements point to specific evidence instead of general impressions. Candidates and employers benefit from the same discipline: both sides do better when the role’s outcomes are explicit.

Frequently asked questions

How early should I arrive for a tech interview?

Smoothstack recommends giving yourself a cushion of 10-15 minutes before the interview, which leaves room for check-in, delays and a moment to settle. The advice is described in its interview tips.

Is there a standard percentage for what a bad hire costs?

No. ConnectDevs says there is no defensible universal percentage, so a company is better off modelling its own categories of cost. Details are in its analysis.

Do I need experience to join a tech career coaching programme?

That depends on the provider. TechTalk UK states that no experience is required for its individual coaching, which makes it an option for people at the start of a career change.

Can coaching lead to job referrals?

Some providers say so. TechTalk UK lists job referrals through an internal network as part of its coaching offer. Ask any provider how referrals work and what they depend on before paying.