As a Software Engineer at Primeit, you play a vital role in delivering high-impact technology solutions to a vast portfolio of external clients. Because Primeit operates as a premier IT consulting and outsourcing firm, our engineering team is the direct link between complex business challenges and cutting-edge technical execution. You will not just write code for a single product; instead, you will have the unique opportunity to work across diverse industries—such as telecommunications, finance, energy, and public sectors—adapting to different technical ecosystems and scaling infrastructures. This role is critical to the business because our clients trust Primeit to deploy engineers who are technically sound, highly adaptable, and capable of seamless integration. Whether you are modernizing legacy systems, designing robust Web APIs, or optimizing database performance, your work directly influences the digital transformation of major enterprises. The variety of project scopes means you will constantly face new challenges, preventing professional stagnation and rapidly accelerating your technical growth. To succeed in this position, you must possess strong software engineering fundamentals combined with a consultant's mindset. You will represent Primeit on front-line client projects, requiring you to balance technical excellence with exceptional soft skills.
Recruiter Reach-Out
reportedInitial contact from a recruiter, often via LinkedIn, to discuss potential fit.
What to demonstrate
- Initial contact from a recruiter, often via LinkedIn, to discuss potential fit
- Depth in Java
How to prepare
- Be able to walk your CV end to end in two minutes, and say why this company specifically.
- Have your salary expectations, notice period and location constraints ready, and ask for the rest of the loop in writing.
Initial Screening Call
reportedA call focused on getting to know you, understanding your career goals, and explaining the Primeit business model.
What to demonstrate
- A call focused on getting to know you, understanding your career goals, and explaining the Primeit business model
- Depth in Java
How to prepare
- Be able to walk your CV end to end in two minutes, and say why this company specifically.
- Have your salary expectations, notice period and location constraints ready, and ask for the rest of the loop in writing.
Technical Evaluation
reportedAssessment phase that may include a written test, coding challenge, or technical interview with a Business Manager.
What to demonstrate
- Assessment phase that may include a written test, coding challenge, or technical interview with a Business Manager
- Depth in Java
How to prepare
- Answer aloud and timed: Explain how Web APIs handle state and what best practices you follow when designing RESTful endpoints.
- Answer aloud and timed: Can you walk me through your academic background and the technical decisions you made during your university projects?
Final Client Interview
reportedInterview with the client's engineering team to ensure alignment on project specifics.
What to demonstrate
- Interview with the client's engineering team to ensure alignment on project specifics
- Depth in Java
How to prepare
- Answer aloud and timed: Where do you see yourself professionally in five years, and what technologies do you want to master next?
- Answer aloud and timed: Why are you interested in working within an IT consulting/outsourcing model rather than a product-focused company?
PracHub editorial advice for the preparation topics above.
Be prepared for the "Skills Matrix" (DC)
Shortly after your initial interview, you will likely be asked to fill out a detailed technical skills document (known internally as a Documento de Competências). Take the time to fill this out accurately and thoroughly, as this document is what our Business Managers use to pitch your profile to high-profile clients.
Brush up on your basic theory
Do not overlook fundamental concepts. Be ready to explain OOP principles, database normalization, and basic web protocols. Simple, clear explanations of these topics go a long way in our initial evaluations.
Maintain proactive communication
Since we handle multiple client pipelines simultaneously, staying in touch with your recruiter or Business Manager shows high motivation. Do not hesitate to politely follow up if you have not received feedback within the promised timeframe.
Choose a category, try a prompt, then open its approach, worked solution or follow-up when you need it.
What are the four main principles of Object-Oriented Programming (OOP), and how do you apply them?
What are the four main principles of Object-Oriented Programming (OOP), and how do you apply them?
Approach
- Say what the runtime actually does before reasoning about the code.
- Name what is shared across threads and what owns each piece of state.
- Identify the window where an invariant is briefly untrue.
- Distinguish a value from a reference to it, and say which one you handed out.
Follow-up
- What happens if two callers reach this at the same time?
- Where could this allocate more than you expect?
What are some of the core differences between Java and.NET when managing memory and performance?
What are some of the core differences between Java and.NET when managing memory and performance?
Approach
- Say what the runtime actually does before reasoning about the code.
- Name what is shared across threads and what owns each piece of state.
- Identify the window where an invariant is briefly untrue.
- Distinguish a value from a reference to it, and say which one you handed out.
Follow-up
- What happens if two callers reach this at the same time?
- Where could this allocate more than you expect?
Could you please describe your favorite hobbies and how you spend your free time in English?
Could you please describe your favorite hobbies and how you spend your free time in English?
Approach
- Say what the runtime actually does before reasoning about the code.
- Name what is shared across threads and what owns each piece of state.
- Identify the window where an invariant is briefly untrue.
- Distinguish a value from a reference to it, and say which one you handed out.
Follow-up
- What happens if two callers reach this at the same time?
- Where could this allocate more than you expect?
Can you explain the difference between SQL and NoSQL databases, and when would you choose one over the other?
Can you explain the difference between SQL and NoSQL databases, and when would you choose one over the other?
Approach
- Name the grain you start from and join outward from it.
- Check whether any join is one-to-many before aggregating, or the sums inflate.
- Say which index the query would use, and what makes it unusable.
- Handle the rows that do not match: that is usually the actual question.
Follow-up
- How does the query change if that join becomes one-to-many?
- What happens to this when the table is ten times larger?
Stop tag and share joins from fanning out a page
resource_tag is (resource_id, tag_id) with PK (resource_id, tag_id); resource_share is (resource_id, shared_with_user_id, permission). The tagged-and-shared listing inner-joins resource to both, filters tenant_id, tag_id = ANY($2) and shared_with_user_id = $3, orders by updated_at DESC and takes 50. Pages come back with fewer than 50 distinct resources and the total in the header is far too high. Explain the row multiplication, rewrite both the page query and the count query so each is correct, and name the index each one needs. PostgreSQL 16.
Approach
- Do the arithmetic against the predicates that are actually there. An inner join emits one row per matching child row, and both joins are filtered: tag_id = ANY($2) admits only the requested tags, shared_with_user_id = $3 admits one user's share rows. So a resource holding three of the requested tags and shared with $3 once yields three rows, not one — the multiplier is its count of matching tags times its share rows for that single user, and that second factor is 1 unless the table admits duplicate (resource_id, shared_with_user_id) pairs. LIMIT 50 then limits rows rather than resources, and COUNT(*) counts pairs — the header is the product, not the population.
- Reject DISTINCT as the fix. It deduplicates after the product has been built, so the planner must materialise and sort the fanned-out set before the LIMIT can apply, and it leaves any SUM or AVG in the same select list wrong.
- Rewrite both filters as semi-joins, keeping resource as the only row source: AND EXISTS (SELECT 1 FROM resource_tag rt WHERE rt.resource_id = r.resource_id AND rt.tag_id = ANY($2)) and the same shape against resource_share. A semi-join stops at the first match per resource and preserves the driving index order, so ORDER BY updated_at DESC, resource_id DESC LIMIT 50 still stops after 50 rows.
- Count with the same predicates and no join at all: SELECT count(*) FROM resource r WHERE r.tenant_id = $1 AND r.status = 'active' AND EXISTS (...) AND EXISTS (...). Nothing multiplies a resource, so the number is the population.
Follow-up
- The filter changes from 'any of these tags' to 'all of these tags'. Rewrite it and state what it costs relative to the ANY form.
- A resource can be shared with the same user twice under different permissions. Does your count change, and should it?
Explain how Web APIs handle state and what best practices you follow when designing RESTful endpoints.
Explain how Web APIs handle state and what best practices you follow when designing RESTful endpoints.
Approach
- Say who the caller is and what they do when the call fails halfway.
- Define the identity of a request so a retry cannot double-apply it.
- Separate accepted, pending, failed and confirmed; they are different facts.
- Design the error taxonomy before the success shape; callers branch on it.
Follow-up
- What happens if the caller retries after a timeout?
- How does a client discover it is on an old version of this contract?
How do you maintain clear communication when working with distributed, multicultural teams?
How do you maintain clear communication when working with distributed, multicultural teams?
Approach
- Fix the scope first: who calls this, how often, and what they do when it fails.
- Name the read and write paths separately; they rarely have the same bottleneck.
- Choose a partition key and say what query it makes expensive.
- State the consistency you need, and where you are willing to be stale.
Follow-up
- What breaks first when traffic grows ten times?
- How does this behave when that dependency is down for an hour?
One log partition stops advancing while the others drain
Search results for a subset of tenants are hours stale; the rest are current. The projection consumer reports lag of zero on 15 of 16 partitions and 400,000 on one. Its error rate is flat and its CPU is idle. outbox_event has no pending rows older than a second, so the relay has published everything it holds. Identify the mechanism, give the ordered checks, and state what you do in the first ten minutes versus what you change permanently.
Approach
- Read the lag distribution first. A slow consumer lags everywhere; zero on fifteen partitions and 400,000 on one is not throughput. Idle CPU on the stuck partition means the consumer is not advancing its offset at all, which points at one message it cannot get past rather than at a rate problem.
- Exonerate the producer before touching the consumer. No pending outbox rows older than a second means the relay published, so the event exists in the log. This separates never sent from sent and never applied, which are different code paths and usually different owners.
- Read the message at the stuck offset and the handler's log lines for its event_id. A flat error rate with no progress has two explanations and you must distinguish them: the handler is throwing and the retry loop is swallowing it, or the handler is blocking on something and never returning. Idle CPU with no error lines favours the second.
- Mitigate before diagnosing further. Move the offending event to a dead-letter store and commit the offset past it. Adding consumers does nothing here, because a partition is consumed by exactly one member of the group, and the blast radius is every aggregate hashed to that partition, not only the aggregate that produced the bad event.
Follow-up
- The dead-lettered event carried aggregate_version 7 and the projection had applied 6. What must the replay do differently if 8 and 9 landed in the meantime?
- How do you show staleness to the user while the partition is behind, given the API already returns the projection's watermark?
Built from the rounds and topics Primeit candidates report.
Prepare, practise & reflect
One practical outcome each day. Spend longer where you need it.
0 / 7 done01Map the Primeit loop
- Write out the reported sequence: Recruiter Reach-Out, Initial Screening Call, Technical Evaluation, Final Client Interview.
- For each round, write one sentence on what it is judging, from the description above, and mark the one you are least ready for.
Deliverable: A one-page map of the 4 reported rounds, with the weakest marked.
02Work Java
- Spend the session on Java, which Primeit candidates report being tested on.
- Write one worked example in Java and time yourself on it.
Deliverable: One timed worked example in Java.
03Work Interview process across roles (HR vs Technical vs Client)
- Spend the session on Interview process across roles (HR vs Technical vs Client), which Primeit candidates report being tested on.
- Write one worked example in Interview process across roles (HR vs Technical vs Client) and time yourself on it.
Deliverable: One timed worked example in Interview process across roles (HR vs Technical vs Client).
04Work C# /.NET
- Spend the session on C# /.NET, which Primeit candidates report being tested on.
- Write one worked example in C# /.NET and time yourself on it.
Deliverable: One timed worked example in C# /.NET.
05Answer out loud: Technical Fundamentals & Language Theory
- Answer aloud, timed: What are the four main principles of Object-Oriented Programming (OOP), and how do you apply them?
- Answer aloud, timed: Can you explain the difference between SQL and NoSQL databases, and when would you choose one over the other?
Deliverable: Spoken answers to 2 reported Technical Fundamentals & Language Theory question(s), under time.
06Answer out loud: Behavioral & Career Motivation
- Answer aloud, timed: Can you walk me through your academic background and the technical decisions you made during your university projects?
- Answer aloud, timed: Where do you see yourself professionally in five years, and what technologies do you want to master next?
Deliverable: Spoken answers to 2 reported Behavioral & Career Motivation question(s), under time.
07Answer out loud: Language Fluency Check
- Answer aloud, timed: Could you please describe your favorite hobbies and how you spend your free time in English?
- Answer aloud, timed: Tell me about the most challenging technical project you have worked on, explaining it in English.
Deliverable: Spoken answers to 2 reported Language Fluency Check question(s), under time.
Expand any day for tasks and deliverables. Your progress is saved on this device.
Behavioural rounds judge the decision you made and what it cost.
How do you approach writing unit tests, and what is your experience with testing frameworks like JUnit?
How do you approach writing unit tests, and what is your experience with testing frameworks like JUnit?
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
Can you walk me through your academic background and the technical decisions you made during your university p
Can you walk me through your academic background and the technical decisions you made during your university projects?
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
Where do you see yourself professionally in five years, and what technologies do you want to master next?
Where do you see yourself professionally in five years, and what technologies do you want to master next?
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
Why are you interested in working within an IT consulting/outsourcing model rather than a product-focused comp
Why are you interested in working within an IT consulting/outsourcing model rather than a product-focused company?
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
How do you handle working in a fast-paced team environment where project requirements might change rapidly?
How do you handle working in a fast-paced team environment where project requirements might change rapidly?
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
What are your salary expectations, and what is your availability to begin a new client project?
What are your salary expectations, and what is your availability to begin a new client project?
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
Tell me about the most challenging technical project you have worked on, explaining it in English.
Tell me about the most challenging technical project you have worked on, explaining it in English.
Approach
- Pick a story where you made the decision, not one where you watched it.
- State the situation in two sentences and spend the rest on the reasoning.
- Give the blast radius: what could have broken, and what you measured.
- Name the disagreement and how you resolved it with evidence.
Follow-up
- What would you do differently if you ran that again?
- How did you know your change caused the improvement?
- 01
How do you approach writing unit tests, and what is your experience with testing frameworks like JUnit?
- 02
Can you walk me through your academic background and the technical decisions you made during your university projects?
- 03
Where do you see yourself professionally in five years, and what technologies do you want to master next?
- 04
Why are you interested in working within an IT consulting/outsourcing model rather than a product-focused company?
How difficult are the technical interviews at Primeit?
The initial technical interviews and assessments conducted by Primeit are generally rated as easy to average, focusing heavily on core programming theory, OOP principles, and basic database knowledge. However, the final client interview can vary significantly in difficulty depending on the specific client's standards and tech stack.
Primeit Software Engineer candidate reports ↗How long does the entire recruitment process take?
The internal Primeit stages (screening and initial technical assessment) are typically very fast, often completed within a week. The matching and client interview phase can take anywhere from a few days to several weeks, depending on the client's urgency and availability.
Primeit Software Engineer candidate reports ↗Will I be working at the Primeit office or the client's office?
This depends entirely on the project and client agreement. Many of our roles offer hybrid or fully remote options, while some clients require on-site presence at their offices. Your recruiter will discuss these details with you during the initial screening call.
Primeit Software Engineer candidate reports ↗What happens if a client project ends?
As a permanent employee of Primeit, if a client project concludes, our Business Managers will work proactively to match you with a new project from our extensive database of clients, ensuring career continuity and exposure to new technologies.
Primeit Software Engineer candidate reports ↗Is there an English test during the interview?
Yes. Even if the primary project language is Portuguese or Spanish, we conduct a quick, informal English check during the HR interview. You will typically be asked to describe your background, hobbies, or a past project in English to assess your fluency.
Primeit Software Engineer candidate reports ↗What topics does Primeit test in interviews?
Primeit interviews most often cover Problem Solving, SQL, Stakeholder Communication, Java, and Technical Interviewing. The exact emphasis depends on the specific role you apply for.
Primeit Software Engineer candidate reports ↗Sources & methodology 3 sources ↗
No official company page is cited. Rounds and questions come from candidate reports and PracHub editorial material; each source shows the date it was read.
- 01Primeit Software Engineer candidate reports ↗
Company-reported rounds, questions and FAQ.
Candidate reports · Accessed 2026-09-22 - 02PracHub Software Engineer practice ↗
PracHub practice material, not company-reported.
PracHub page · Accessed 2026-09-22 - 03PracHub preparation framework ↗
PracHub preparation guidance.
PracHub page · Accessed 2026-09-22
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