It\u2019s been a few years now, but I still clearly remember a warm April afternoon when a client I deeply admired, professionally speaking, gave me a proper dressing-down.
The reason? I showed up wearing my standard uniform at the time: jeans and a neon-yellow tech T-shirt with Japanese characters. I was extremely proud of it. Everyone else, however, was wearing at least a jacket\u2014some even a tie.<\/p>\n\n\n\n
In tech we like to repeat that \u201cin the end, only the code matters<\/em>.\u201d Or the product, as Uncle Steve taught us with his iconic black turtleneck. Still, a minimum level of respect for the people on the other side of the table never hurts.<\/p>\n\n\n\n As often happens, sooner or later you end up on the other side of the fence, interviewing technically strong candidates in contexts so absurd that hard skills become secondary. A tech interview can be seen as the combination of several equally important factors: hardware, operating system, network, communication software, physical environment, and\u2014inevitably\u2014the human factor. We tend to take our computer for granted. Our katana will not fail us at the crucial moment\u2014or so we think. You don\u2019t need the latest MacBook, a 64-GB workstation, or a cutting-edge GPU. You need a machine that is under control. Basic life-saving maneuvers help more than people think. A clean reboot 30 to 60 minutes before the interview, closing IDEs, Docker, VMs and heavy processes, disabling notifications, and keeping the laptop plugged in go a long way. The webcam is not there for aesthetics. It establishes presence. Unless you\u2019re Christopher Nolan, the rules are simple: the camera should be at eye level, no low-angle shots, face and shoulders visible. That said, in about 90% of remote interviews, video is not the real problem. Audio is. A simple wired headset with a decent microphone is often the best option. Expensive wireless headphones are heavy, uncomfortable, and mysteriously always out of battery when you need them most. Bluetooth reliability depends heavily on the computer itself. And choose the quietest room you can. Do not expect people in an open space to lower their voices because you\u2019re on a call. Usually, the opposite happens.<\/p>\n\n\n\n No interview happens without a network. Know where you\u2019ll be and what the connection will be like. Ethernet beats Wi-Fi. Stable Wi-Fi beats last-minute hotspots. Test latency and stability in advance. People notice everything. Your desk is your physical user interface. It doesn\u2019t need monk-level minimalism, but it does need readability. What to avoid? Visual clutter. Crumpled tissues, grocery bags, cable spaghetti, or overly personal objects.<\/strong> I know your Batman action figure says a lot about you\u2014but if the interviewer is a Marvel fan, like me, you\u2019re already off to a bad start.<\/p>\n\n\n\n An orderly desk communicates control of context, abstraction skills, and respect for the listener. Most importantly, it allows them to focus on you instead of on a book they haven\u2019t read but are now curious about.<\/p>\n\n\n\n Before the conversation even starts, the other side has already processed your background, lighting, and environment. The background should not tell a story. A Wizard of Oz poster invites interpretations you probably don\u2019t want.<\/p>\n\n\n\n Even in tech, the body speaks. A hunched back signals disengagement, a lowered gaze suggests insecurity, constant movement communicates stress.
Back when interviews happened in neutral, physical spaces, you could forgive certain things\u2014as long as no one showed up in sweatpants and slippers. Today, with remote interviews from home, the context expands dramatically, sometimes in terrifying ways.<\/p>\n\n\n\n
Like any distributed system, the overall experience is constrained by its weakest link. And in tech, weak links tend to fail spectacularly.<\/p>\n\n\n\nThe machine<\/h3>\n\n\n\n
If I had a cent for every time a candidate\u2019s system froze mid-interview, I would be a much richer and far less frustrated developer.<\/p>\n\n\n\n
A computer that starts system updates during the interview, spins its fans at full speed as soon as the call opens, throws notifications on screen, or lags while you speak sends a very clear message: you are a fly on the highway, waiting for the windshield (Genesis, the band\u2014not the Bible).<\/p>\n\n\n\n
If someone doesn\u2019t prepare their machine for a critical event, it\u2019s reasonable to wonder how they handle complex production environments. Disabling notifications, in particular, is mandatory<\/strong> when sharing your screen\u2014accidents caused by pop-ups are incredibly common.<\/p>\n\n\n\nCamera and audio<\/h3>\n\n\n\n
A laptop flat on the table almost always frames badly, no matter how far you tilt the screen. If you don\u2019t have a stand, two books will do. It\u2019s a trivial micro-optimization with a massive impact. Eye contact\u2014even through a screen\u2014still matters.<\/p>\n\n\n\n
Poor audio breaks the flow, tires the listener, reduces perceived authority, and creates constant friction. Watching grown adults contort their faces trying to decode muffled sounds is exhausting.<\/p>\n\n\n\n
Ten-euro wired earbuds may not be trendy and tend to tangle themselves into Gordian knots, but they usually work. Alternatively, a basic USB microphone is excellent if you\u2019re mostly stationary\u2014finally a way to justify those Black Friday purchases.<\/p>\n\n\n\nConnectivity and tools<\/h3>\n\n\n\n
Just as important: know which app will be used. Update Teams, Zoom, or Meet beforehand, check audio and video permissions, and do a test call. Nothing destroys credibility and increases anxiety like appearing on screen in full \u201cgasping fish\u201d mode, touching eyes, ears, and mouth in a frantic ritual.<\/p>\n\n\n\nYour physical UI<\/h3>\n\n\n\n
A solid baseline includes your main computer or monitor, a notebook and pen (yes, even if you let AI take notes\u2014drawing or scribbling helps focus), and water. Unscrewing a bottle is a classic public-speaking trick to buy time.<\/p>\n\n\n\n
Neutral walls or an orderly bookshelf work well, with soft, frontal light. What should be avoided at all costs? Beds in the background (yes, I once interviewed a very young candidate in a tank top, with a bed behind him\u2014and what I assume was his girlfriend tossing and turning inside it). Kitchens, unless you\u2019re interviewing for MasterChef. People walking behind you. Glitchy virtual backgrounds that fail every time you breathe.<\/p>\n\n\n\nBody language still exists<\/h3>\n\n\n\n
Sit as if you were presenting a technical solution to a client\u2014because that is exactly what you\u2019re doing.<\/p>\n\n\n\nThe other side of the coin<\/h3>\n\n\n\n