Interview preparation

Proxify AB interview process & preparation

Proxify AB currently has 2+ live openings on OnJob.io, concentrated in Backend Developer and Software Engineer roles. There are no leaked or company-specific questions here — instead, prepare with the general, role-based interview rounds and most-asked questions for those role types below, then practise them free with OnJob's AI mock interview.

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Honest note: OnJob.io does not publish leaked or company-confidential interview questions. The guides below are general, role-based preparation — the standard rounds and commonly-asked questions for the role types Proxify AB is currently hiring for. Use them to prepare; your real Proxify AB interview may differ.

What to expect when interviewing for Backend Developer and Software Engineer roles at companies like Proxify AB

Proxify AB is currently advertising these role types on OnJob.io. Each guide is the general interview structure and most-asked questions for that role — prepare with it, then rehearse free with the AI mock interview.

General Backend Developer interview prep

1 live role at Proxify AB

APIs, databases, concurrency and system design — the server-side engineering interview across product companies and fintech.

Typical Backend Developer interview rounds

  1. 1 DSA round. Coding problems plus complexity analysis.
  2. 2 Language & runtime. Deep dive on your primary language (Java/Node/Python/Go) and its concurrency model.
  3. 3 Database & API design. Schema design, indexing, transactions and REST/gRPC API design.
  4. 4 System design. Designing scalable, fault-tolerant backend services.

Commonly-asked Backend Developer questions

  • Explain the difference between SQL and NoSQL, and when you'd choose each.
  • What is database indexing and how does it speed up queries?
  • Explain ACID properties in a database transaction.
  • What is the difference between REST and GraphQL?
  • How do you handle concurrency and race conditions in your backend?
  • What is a deadlock and how do you prevent it?
  • Explain caching strategies — write-through, write-back and cache invalidation.
  • What is the difference between horizontal and vertical scaling?
Full Backend Developer prep AI mock interview

General Software Engineer interview prep

1 live role at Proxify AB

Coding, data structures, algorithms and system design — the core software engineering loop used by product companies and startups across India.

Typical Software Engineer interview rounds

  1. 1 Online assessment. Timed coding problems on arrays, strings and hashing on HackerRank or HackerEarth.
  2. 2 DSA / problem solving. 1–2 live coding rounds on data structures, algorithms and complexity analysis.
  3. 3 System design. Designing a scalable service (mid/senior); low-level design for early-career.
  4. 4 Hiring manager / culture fit. Past projects, ownership, behavioural questions and team fit.

Commonly-asked Software Engineer questions

  • Reverse a linked list, both iteratively and recursively.
  • Find the two numbers in an array that add up to a target sum.
  • Detect whether a linked list has a cycle.
  • What is the difference between a process and a thread?
  • Explain time and space complexity (Big O) with examples.
  • How does a hash map work internally, and what happens on collisions?
  • Find the longest substring without repeating characters.
  • What is the difference between an array and a linked list?
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Rehearse your Proxify AB interview, free

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Interview prep at other companies

Proxify AB interview — FAQs

How do I prepare for a Proxify AB interview?

Prepare by role: identify the role you're applying for, then practise the standard interview rounds and most-asked questions for that role type. Proxify AB is currently hiring for Backend Developer and Software Engineer roles, so focus there. Use OnJob's free AI mock interview to rehearse with instant feedback, and review the role-specific question lists below. These are general role-based questions, not leaked Proxify AB questions.

What questions are asked in a Proxify AB interview?

We don't publish leaked or company-specific Proxify AB questions. What we do provide is the general, frequently-asked interview questions for the role types Proxify AB hires for — such as Backend Developer and Software Engineer roles. For example, Backend Developer interviews commonly cover: Explain the difference between SQL and NoSQL, and when you'd choose each. What is database indexing and how does it speed up queries? Explain ACID properties in a database transaction. Prepare with these general questions and OnJob's free AI mock interview.

How many rounds does a Proxify AB interview have?

It depends on the role. A typical Backend Developer interview runs across 4 rounds — DSA round, Language & runtime, Database & API design, System design. Round counts vary by company and seniority; treat this as the general structure to prepare for, not a guarantee of Proxify AB's exact process.

Is Proxify AB hiring right now?

Yes — Proxify AB has 2+ live openings on OnJob.io, refreshed daily, mostly for Backend Developer and Software Engineer roles. Browse the live Proxify AB jobs and see your AI match score on each before you apply.

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