Boolean search strings for software engineers: stack, cloud certs and GitHub X-ray
On this page
- Why "software engineer" alone is the wrong search
- Eleven Boolean strings by specialty
- What LinkedIn, Dice and Google actually support
- Narrowing by location and seniority in a remote-heavy market
- False positives worth excluding with NOT
- A worked example: three passes on a platform engineer search
- What a string cannot tell you about depth
- Questions people ask
Software engineer titles say almost nothing on their own: "software engineer" covers a backend developer, a mobile developer and a machine learning engineer with no other overlap in daily work. A string that stops at the title returns a pile of unrelated profiles; a string that adds the stack, the scale, and one certification where the role has one, returns people who can actually do the job.
Below are eleven strings organized by specialty, and what LinkedIn, Dice and Google actually support for this kind of search as of September 2026. For the operators themselves, see Boolean search strings for recruiters.
Why "software engineer" alone is the wrong search
Every specialty below needs three things a bare title search skips: the language or framework that actually does the work, a scale or system word that only a practitioner writes, and, where the role has one, a cloud or platform certification. Certifications matter more in cloud and security roles than in general application work, where most strong engineers hold none at all; do not require one unless the requisition does.
- Title variants. "Software engineer," "software developer," "SDE" and "programmer" are used inconsistently across companies; searching only one misses candidates at companies that standardized on another.
- The IC ladder is not a title filter. "Senior," "staff" and "principal" describe seniority within a company's own ladder, and a "senior engineer" at one company can outrank a "staff engineer" at another. Use years of experience alongside the title word, not instead of it.
- Manager is a different job. "Engineering manager" and "director of engineering" people-manage rather than write production code day to day. Exclude them from an individual-contributor search with NOT unless the role is a lead who also codes.
- Certifications are cloud-specific, not universal. AWS, Google Cloud and Azure each run their own certification, and a candidate typically holds at most one or two. Search them as an OR block, never an AND requirement, unless the client insists on one specific cloud.
Eleven Boolean strings by specialty
Swap in the languages and systems from your own intake; these are examples.
Backend and platform
1. Backend engineer, distributed systems — LinkedIn general search
("backend engineer" OR "backend developer" OR "server-side engineer") AND (golang OR java OR "distributed systems") NOT (recruiter OR "account executive")
2. Site reliability / platform engineer — Dice resume search
("site reliability engineer" OR "sre" OR "platform engineer") AND (kubernetes AND terraform) NOT ("sales engineer")
3. Cloud engineer with a specific certification — LinkedIn Recruiter, Job titles + Keywords filters
("cloud engineer" OR "devops engineer") AND ("aws certified solutions architect" OR "google professional cloud architect" OR "azure solutions architect")Frontend, mobile and full-stack
4. Frontend engineer, React — LinkedIn general search
("frontend engineer" OR "front-end engineer" OR "ui engineer") AND (react OR "react.js") NOT ("wordpress developer" OR "web designer")
5. Full-stack engineer, small team — LinkedIn Recruiter, Companies + Keywords filters
("full stack engineer" OR "full-stack developer") AND (react OR vue OR angular) AND (node OR python OR ruby) NOT (intern OR bootcamp)
6. iOS engineer — Dice resume search
("ios engineer" OR "ios developer") AND (swift AND swiftui) NOT ("react native developer")
7. Android engineer — LinkedIn general search
("android engineer" OR "android developer") AND (kotlin) NOT ("react native developer" OR flutter)Data, machine learning and security
8. Machine learning engineer — LinkedIn Recruiter, Keywords filter
("machine learning engineer" OR "ml engineer") AND (pytorch OR tensorflow) NOT ("data analyst" OR "bi analyst")
9. Security engineer — LinkedIn general search
("security engineer" OR "application security engineer" OR "appsec engineer") AND (oscp OR cissp) NOT ("security guard" OR "physical security")Search-engine X-ray
10. Public GitHub contributors by language — Google X-ray
site:github.com "rust" "systems programming" -topics -trending
11. Public resumes mentioning a stack — Google X-ray, filetype search
filetype:pdf "software engineer" "kubernetes" resume -jobs -templateA GitHub or resume-PDF X-ray finds only what is public and indexed. A quiet, prolific contributor whose employer restricts public code, or whose resume is only inside a job board's private database, will not appear no matter how well you write the string.
What LinkedIn, Dice and Google actually support
The shared operator rules, with each platform's help page linked, are in Boolean search strings for recruiters. The difference that
matters most for engineering searches, as of September 2026, is word endings. LinkedIn has no
wildcard, so "engineer" and "engineering" both need writing out. Dice's
Boolean guide says its database "already auto populates the various endings", so
admin already finds "administrator" there. Stemming does not reach synonyms: "engineer"
will still miss "developer" on Dice, so keep both in one OR block wherever you search.
The GitHub and resume X-rays above lean on site: and filetype:; both only
reach pages a developer has made public, and a busy GitHub profile says more about hobby projects than
about the day job, so read it as a lead rather than evidence.
Narrowing by location and seniority in a remote-heavy market
Engineering hiring has more fully remote roles than most fields, which makes a plain city filter unreliable: a strong candidate who lists a home city may be open to a remote role anywhere in the country, and a location filter alone will not surface them for a client outside that city. Search the target city or metro first, then run the same string with location removed and "remote" added as a keyword, and compare the two result sets rather than picking one.
For seniority, LinkedIn's page on premium search filters lists Years of Experience and Seniority Level as filters exclusive to Recruiter and Sales Navigator. On a free account, put an experience range into the keyword string instead, such as ("5+ years" OR "6 years" OR "7 years"), understanding that this only matches candidates who wrote a number, which is a smaller and less reliable set than the filter would return.
False positives worth excluding with NOT
- Recruiters and vendors. People who sell or source engineering talent often list the same languages and frameworks their customers use. Exclude "recruiter," "technical recruiter," "account executive" and "sales engineer."
- Support and QA roles that share vocabulary. "Support engineer," "QA engineer" and "test engineer" mention the same languages as the developers they support without writing the same code. Exclude them by title when the role is strictly a development role.
- Instructors and bootcamp staff. "Instructor," "mentor" and "curriculum" show up on profiles of people who teach a stack rather than ship it in production. Add them to the exclusion block for an experienced-hire search.
- Students and new graduates, when the role needs experience. "Student," "intern" and a graduation year close to the present all indicate someone earlier in their career than a mid-level or senior requisition needs.
A worked example: three passes on a platform engineer search
An invented search, shown as it actually gets narrowed.
Intake: A 40-person startup needs a platform engineer to own their Kubernetes migration. Must have run Kubernetes in production, not just in a course. Not looking for engineers whose only infrastructure exposure is deploying to a managed platform someone else configured.
Pass 1: kubernetes AND engineer: thousands of results, most of whom
mention Kubernetes once in a list of technologies they were exposed to, not responsible for.
Pass 2: ("platform engineer" OR "infrastructure engineer" OR "site reliability
engineer") AND (kubernetes AND terraform) NOT ("sales engineer" OR recruiter): a workable list,
but it still includes engineers who used a company's existing cluster without setting one up.
Pass 3: add AND ("migrated to kubernetes" OR "cluster setup" OR "helm charts")
to the string. Phrases like these are typically written only by someone who did the setup work, not
someone who deployed into a cluster someone else built. The list shortens further, and the screen
confirms which candidates actually owned the migration versus supported it.
The lesson generalizes past this one search: a tool name in a profile tells you exposure, not ownership. A phrase describing the work itself, in language a practitioner would actually write, is a much better filter than the tool name alone, and it is worth the extra pass to find that phrase before you start screening.
What a string cannot tell you about depth
A string can find someone who worked with the right stack. It cannot tell you what their part in the system actually was, whether they built it or maintained someone else's code, or how they respond when something in it breaks at 2 a.m. The software engineer phone screen questions page has the questions a non-technical recruiter can ask to test that depth, and how to source candidates on LinkedIn covers reading the rest of the profile and writing a message that gets a reply.
Questions people ask
Does a Boolean string need to include a degree requirement?
Usually not. Plenty of strong engineers are self-taught or bootcamp trained, and a degree requirement in the string filters them out before you ever see a resume. Screen for a degree on the call if the client truly requires one; do not encode it in the search.
Should I search for a specific framework version, like React 18?
No platform in this guide indexes version numbers reliably, and most engineers do not write the version in their profile. Search the framework name and confirm the version, and how recently they used it, on the screen.
Is a GitHub profile a substitute for a resume?
For open-source or side-project work, it is better evidence than a resume line, because you can read the code. It says nothing about paid work the person cannot share publicly, so treat a thin GitHub profile as inconclusive, not as a red flag, for engineers who work mostly on closed-source products.
Why does my backend engineer search return mostly recruiters and vendors?
Recruiters, sales engineers and vendor account managers who sell to backend teams often list the same languages and frameworks their customers use. Exclude "recruiter," "account executive" and "sales engineer" from the string, not just job-board recruiter filters.