A Software Engineer at Exela Technologies plays a pivotal role in developing and maintaining the complex digital solutions that drive the company’s business process automation services. You will be tasked with building scalable software, optimizing data architectures, and integrating advanced technologies to support global operations. Whether working on enterprise-grade applications or specialized IoT and cloud initiatives, your code directly impacts the efficiency and reliability of systems used by major organizations worldwide. This position demands a blend of rigorous technical proficiency and a practical, problem-solving mindset. You will often operate at the intersection of development, system architecture, and client-specific requirements. Success in this role requires not just an ability to write clean, maintainable code, but also the capacity to understand the broader business context of the software you build. You will be expected to thrive in a fast-paced environment where your technical decisions directly influence the performance and success of project delivery.
Initial Screening
reportedAssessment of your technical fundamentals to gauge baseline knowledge.
What to demonstrate
- Assessment of your technical fundamentals to gauge baseline knowledge
- Depth in OOP (Object-Oriented Programming)
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 Discussions
reportedIn-depth, one-on-one technical discussions to evaluate your problem-solving skills.
What to demonstrate
- In-depth, one-on-one technical discussions to evaluate your problem-solving skills
- Depth in OOP (Object-Oriented Programming)
How to prepare
- Answer aloud and timed: Describe the process of optimizing a slow-running query in SQL Server.
- Answer aloud and timed: How do you implement dependency injection in an ASP.NET MVC application?
Managerial Evaluations
reportedAssessment by managerial staff to evaluate fit within the team and company.
What to demonstrate
- Assessment by managerial staff to evaluate fit within the team and company
- Depth in OOP (Object-Oriented Programming)
How to prepare
- Answer aloud and timed: Explain the concept of LINQ and provide an example of its use in data manipulation.
- Answer aloud and timed: Write a program to demonstrate polymorphism in a real-world scenario.
PracHub editorial advice for the preparation topics above.
Dress formally
Regardless of the interview mode, dressing in professional attire is expected at Exela Technologies and shows respect for the process.
Review your resume
Be prepared to discuss every project listed on your resume in detail, including the specific technologies you used and the problems you solved.
Read the Job Description
Requirements can vary significantly by team (e.g., some teams prioritize Java, others.NET). Tailor your preparation to the specific tech stack mentioned in your invitation.
Ask questions
At the end of your technical rounds, ask the interviewer about the team's current projects or their approach to development. It demonstrates engagement and curiosity.
Choose a category, try a prompt, then open its approach, worked solution or follow-up when you need it.
How do you handle memory management and garbage collection in C#?
How do you handle memory management and garbage collection in C#?
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?
Write a program to demonstrate polymorphism in a real-world scenario.
Write a program to demonstrate polymorphism in a real-world scenario.
Approach
- Restate the input: its shape, its size, and what is guaranteed about it.
- Name the brute-force solution and its complexity before improving on it.
- Choose the data structure from the access pattern, not from familiarity.
- State the target complexity and say which constraint rules the naive version out.
Follow-up
- How does this change if the input no longer fits in memory?
- What is the worst case, and how likely is it on real data?
Given a specific error-handling requirement, how would you structure your code to ensure system stability?
Given a specific error-handling requirement, how would you structure your code to ensure system stability?
Approach
- Restate the input: its shape, its size, and what is guaranteed about it.
- Name the brute-force solution and its complexity before improving on it.
- Choose the data structure from the access pattern, not from familiarity.
- State the target complexity and say which constraint rules the naive version out.
Follow-up
- How does this change if the input no longer fits in memory?
- What is the worst case, and how likely is it on real data?
Describe the process of optimizing a slow-running query in SQL Server.
Describe the process of optimizing a slow-running query in SQL Server.
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?
Explain why the owner filter ignores the listing index
The only index on resource is (tenant_id, status, updated_at DESC, resource_id DESC). A new endpoint returns one user's resources across all statuses, newest created first: WHERE tenant_id = $1 AND owner_user_id = $2 ORDER BY created_at DESC LIMIT 20. On a tenant with 2M rows it takes 900 ms and EXPLAIN shows a sort above a large scan. Explain precisely why the existing index cannot serve it, give the index that can, and state which of these the new index still will not help: owner_user_id alone across tenants; the same query ordered by updated_at. PostgreSQL 16.
Approach
- Separate the two jobs an index does. For filtering, a composite btree is seekable only on a left prefix, so with no predicate on status the scan can at best range over tenant_id and test owner_user_id per row; PostgreSQL 16 has no btree skip scan to jump the unconstrained column.
- For ordering, the index is sorted by (status, updated_at) within a tenant and not by created_at, so the LIMIT cannot stop early: every matching row is read and then sorted. That is the 'Sort Method: top-N heapsort' line, and it is why the plan reads 2M rows to answer with 20.
- Derive the replacement from the access path — equality, equality, then the ordering column: CREATE INDEX CONCURRENTLY ON resource (tenant_id, owner_user_id, created_at DESC). The scan seeks to the (tenant, owner) range and walks 20 entries in order, so the Sort node disappears along with the row-read.
- Treat INCLUDE (title, status) as conditional, not free. An index-only scan still visits the heap for any row whose page is not marked all-visible, so on a table taking 1.2k writes/second the win depends on autovacuum keeping the visibility map current, and the wider index costs more on every insert.
Follow-up
- 90% of rows are status='active'. Would a partial index WHERE status = 'active' change your answer, and for which of the three queries?
- A dashboard runs this for 40 owners in one page load. What changes about the design?
Explain the difference between an interface and an abstract class in OOPS.
Explain the difference between an interface and an abstract class in OOPS.
Approach
- Clarify what is being asked and what a complete answer contains.
- State your assumptions explicitly before working the problem.
- Say what you would check first and why it is the highest-information step.
- Work from the requirement backwards to the design.
Follow-up
- What assumption would you test first?
- How would you know your answer was wrong?
How do you implement dependency injection in an ASP.NET MVC application?
How do you implement dependency injection in an ASP.NET MVC application?
Approach
- Clarify what is being asked and what a complete answer contains.
- State your assumptions explicitly before working the problem.
- Say what you would check first and why it is the highest-information step.
- Work from the requirement backwards to the design.
Follow-up
- What assumption would you test first?
- How would you know your answer was wrong?
Explain the concept of LINQ and provide an example of its use in data manipulation.
Explain the concept of LINQ and provide an example of its use in data manipulation.
Approach
- Clarify what is being asked and what a complete answer contains.
- State your assumptions explicitly before working the problem.
- Say what you would check first and why it is the highest-information step.
- Work from the requirement backwards to the design.
Follow-up
- What assumption would you test first?
- How would you know your answer was wrong?
How would you design a database schema for an ETL process?
How would you design a database schema for an ETL process?
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?
Describe how you would integrate IoT devices with an Azure or AWS backend.
Describe how you would integrate IoT devices with an Azure or AWS backend.
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 approach debugging a multi-threaded application?
How do you approach debugging a multi-threaded application?
Approach
- Establish what changed and when, before forming any theory.
- Pick a bisection that eliminates candidates whichever way it turns out.
- Check the instrumentation before believing the symptom.
- Separate the trigger from the cause; the deploy is rarely the bug.
Follow-up
- What would you look at first, and what would it rule out?
- How would you tell a cause from a coincidence here?
Built from the rounds and topics Exela Technologies candidates report.
Prepare, practise & reflect
One practical outcome each day. Spend longer where you need it.
0 / 7 done01Map the Exela Technologies loop
- Write out the reported sequence: Initial Screening, Technical Discussions, Managerial Evaluations.
- 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 3 reported rounds, with the weakest marked.
02Work OOP (Object-Oriented Programming)
- Spend the session on OOP (Object-Oriented Programming), which Exela Technologies candidates report being tested on.
- Write one worked example in OOP (Object-Oriented Programming) and time yourself on it.
Deliverable: One timed worked example in OOP (Object-Oriented Programming).
03Work C#
- Spend the session on C#, which Exela Technologies candidates report being tested on.
- Write one worked example in C# and time yourself on it.
Deliverable: One timed worked example in C#.
04Work SQL
- Spend the session on SQL, which Exela Technologies candidates report being tested on.
- Write one worked example in SQL and time yourself on it.
Deliverable: One timed worked example in SQL.
05Answer out loud: Technical and Domain Proficiency
- Answer aloud, timed: Explain the difference between an interface and an abstract class in OOPS.
- Answer aloud, timed: How do you handle memory management and garbage collection in C#?
Deliverable: Spoken answers to 2 reported Technical and Domain Proficiency question(s), under time.
06Answer out loud: Problem-Solving and Coding
- Answer aloud, timed: Write a program to demonstrate polymorphism in a real-world scenario.
- Answer aloud, timed: How would you design a database schema for an ETL process?
Deliverable: Spoken answers to 2 reported Problem-Solving and Coding question(s), under time.
07Answer out loud: Behavioral and Process
- Answer aloud, timed: Describe a challenging project you worked on and the specific technical solutions you provided.
- Answer aloud, timed: How do you handle situations where you have conflicting requirements from different stakeholders?
Deliverable: Spoken answers to 2 reported Behavioral and Process 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.
Describe a challenging project you worked on and the specific technical solutions you provided.
Describe a challenging project you worked on and the specific technical solutions you provided.
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 situations where you have conflicting requirements from different stakeholders?
How do you handle situations where you have conflicting requirements from different stakeholders?
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 us about a time you had to learn a new technology on the fly to meet a project deadline.
Tell us about a time you had to learn a new technology on the fly to meet a project deadline.
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 manage your time when juggling multiple technical tasks or bug fixes?
How do you manage your time when juggling multiple technical tasks or bug fixes?
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?
Describe your experience working in an Agile/Scrum environment.
Describe your experience working in an Agile/Scrum environment.
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
Describe a challenging project you worked on and the specific technical solutions you provided.
- 02
How do you handle situations where you have conflicting requirements from different stakeholders?
- 03
Tell us about a time you had to learn a new technology on the fly to meet a project deadline.
- 04
How do you manage your time when juggling multiple technical tasks or bug fixes?
How long does the interview process typically take?
The process can range from a single day of multiple back-to-back interviews to several weeks, depending on the role and location. Always confirm the expected number of rounds with your recruiter early on.
Exela Technologies Software Engineer candidate reports ↗Is the technical test difficult?
The difficulty is generally pegged at an average to hard level, focusing on practical implementation rather than obscure academic theory. If you have a solid grasp of your primary programming language and SQL, you will be well-positioned to succeed.
Exela Technologies Software Engineer candidate reports ↗What is the best way to stand out?
Successful candidates demonstrate a "can-do" attitude and a willingness to explain their logic clearly. Showing that you have researched the company’s products and are genuinely interested in how they use technology to solve business problems will set you apart.
Exela Technologies Software Engineer candidate reports ↗Should I prepare for behavioral questions?
Yes. While the process is heavily technical, managers will evaluate your cultural fit. Use the STAR method to share examples of how you have handled technical challenges and team conflicts in the past.
Exela Technologies Software Engineer candidate reports ↗What topics does Exela Technologies test in interviews?
Exela Technologies interviews most often cover Angular, JavaScript, SQL, OOP (Object-Oriented Programming), and Sales role (Account Executive). The exact emphasis depends on the specific role you apply for.
Exela Technologies 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.
- 01Exela Technologies 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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