Lincoln Financial · Software Engineer
Updated · 2026-10-02

Lincoln Financial Software Engineer
Interview Guide

THE 60-SECOND BRIEF

As a Software Engineer at Lincoln Financial, you will play a critical role in driving the digital transformation of one of the country's largest financial services and insurance institutions. The engineering team is tasked with building, scaling, and maintaining the core applications that support retirement plan services, life insurance, group benefits, and annuities. Your work directly impacts millions of customers who rely on Lincoln Financial to secure their financial futures, requiring a high degree of reliability, security, and performance. The engineering organization is currently undergoing a massive modernization effort, transitioning from legacy on-premise systems to cloud-native architectures.

This guide is scoped to a Software Engineer candidate at Lincoln Financial.

Lincoln Financial candidates report 3 rounds over 3-5 weeks. The stages below are what candidates describe, not a published process.

AWS (Amazon Web Services)HibernateJPA (Java Persistence API)

23 min read

Browse Software Engineer questions

See the practice prompts

20Practice promptsAcross five skill areas

As a Software Engineer at Lincoln Financial, you will play a critical role in driving the digital transformation of one of the country's largest financial services and insurance institutions. The engineering team is tasked with building, scaling, and maintaining the core applications that support retirement plan services, life insurance, group benefits, and annuities. Your work directly impacts millions of customers who rely on Lincoln Financial to secure their financial futures, requiring a high degree of reliability, security, and performance. The engineering organization is currently undergoing a massive modernization effort, transitioning from legacy on-premise systems to cloud-native architectures. As a Software Engineer, you will not only write code but also actively participate in migrating applications to AWS, optimizing database performance, and refactoring monolithic codebases into scalable microservices. You will work in a highly collaborative, cross-functional environment alongside product managers, business analysts, and system architects to deliver high-quality financial technology solutions. This position offers a unique blend of enterprise-scale challenges and modern technology adoption. Whether you are optimizing Hibernate performance for high-throughput transactions or designing serverless workflows in AWS, your contributions will directly influence the speed, security, and efficiency of Lincoln Financial's digital services.

01

Phone Screen

reported

Initial 15-to-20-minute call with an internal recruiter to discuss background, salary expectations, and role fit.

What to demonstrate

  • Initial 15-to-20-minute call with an internal recruiter to discuss background, salary expectations, and role fit
  • Depth in AWS (Amazon Web Services)

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.
Lincoln Financial Software Engineer candidate reports ↗
02

Hiring Manager Discussion

reported

45-minute discussion with the hiring manager blending behavioral questions and a review of technical experiences.

What to demonstrate

  • 45-minute discussion with the hiring manager blending behavioral questions and a review of technical experiences
  • Depth in AWS (Amazon Web Services)

How to prepare

  • Prepare two projects you led end to end, each with the decision you owned and what it cost.
  • Have three questions about the team's roadmap and how success is measured in the first six months.
Lincoln Financial Software Engineer candidate reports ↗
03

Panel Interview

reported

Final stage with senior engineers and technical leads focusing on system design, technical frameworks, and past project execution.

What to demonstrate

  • Final stage with senior engineers and technical leads focusing on system design, technical frameworks, and past project execution
  • Depth in AWS (Amazon Web Services)

How to prepare

  • Answer aloud and timed: How do you handle state management and session timeouts when working with frontend frameworks like JSF or Primefaces?
  • Answer aloud and timed: Walk me through an application migration project you led or contributed to. How did you transition services to AWS?
Lincoln Financial Software Engineer candidate reports ↗

PracHub editorial advice for the preparation topics above.

01

Master your resume details

Interviewers frequently ask candidates to walk through their past projects from beginning to end. Be ready to explain every technology, architecture, and decision listed on your resume in exhaustive detail.

02

Brush up on legacy modernization

Be prepared to discuss how you would approach migrating legacy systems (like on-premise Java applications) to the cloud. Showing respect for legacy systems while advocating for modern solutions is a great way to stand out.

03

Quoting amortised or average cost as if it were a worst-case guarantee

Appending to a dynamic array is amortised O(1), but the append that triggers a resize copies every element, and hash lookup is constant only while the hash spreads the actual keys. Say which guarantee you are offering when the caller cares about the latency of one call rather than the total over many.

Choose a category, try a prompt, then open its approach, worked solution or follow-up when you need it.

14 technical prompts0 include a worked solution

Describe your experience with multi-threading. How do you ensure thread safety in a high-concurrency Java appl

medium
Technical & Framework Deep Dives

Describe your experience with multi-threading. How do you ensure thread safety in a high-concurrency Java application?

Approach
  1. Say what the runtime actually does before reasoning about the code.
  2. Name what is shared across threads and what owns each piece of state.
  3. Identify the window where an invariant is briefly untrue.
  4. 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?

Canonicalise a request body into a stable idempotency fingerprint

medium
parsingcanonicalisationhashing

idempotency_key.request_fingerprint is a SHA-256 over the method, path and canonicalised body, and a retry whose fingerprint differs must be rejected with 422 rather than served the stored response. Write the canonicaliser. Bodies are JSON up to 256 KB nested at most 32 levels; clients vary key order, whitespace and unicode escaping, and some send 64-bit ids as JSON numbers. Produce a deterministic byte string such that semantically identical bodies match and any semantic difference does not. State your complexity and name two normalisations you refuse to perform.

Approach
  1. Parse once into a tree, then re-serialise under fixed rules: object keys sorted, array order preserved, one escaping convention, no insignificant whitespace. Parsing is O(n) and sorting keys is O(k log k) per object, so O(n log n) overall with O(depth) stack, and the 32-level cap is enforced during parsing because hostile nesting is how a canonicaliser becomes a stack overflow.
  2. Sort keys by their UTF-8 bytes and say why the obvious implementation is wrong in some runtimes: a default string comparison that orders by UTF-16 code units places surrogate pairs, meaning code points from U+10000 up, below U+E000 to U+FFFF, which is not UTF-8 byte order, so two services written in different languages disagree on the same document.
  3. Do not re-encode numbers through a double. IEEE-754 binary64 represents integers exactly only up to 2^53, so normalising a 19-digit id through a float changes it, and 1 against 1.0 cannot be reconciled without deciding whether they are the same value. Preserve the literal token, and require ids as strings at the API boundary if you want them comparable.
  4. Reject duplicate keys rather than picking one. JSON permits them and parsers disagree, most keeping the last, so any choice you make ties the fingerprint to a parser detail that the code handling the request does not necessarily share.
Follow-up
  • A client sends the same logical request with an extra field your API ignores. Same key, different fingerprint, so you return 422. Is that the right answer?
  • Where does the fingerprint get computed relative to request decompression and the body-size limit?

Collapse a redelivered event batch into per-aggregate high-water marks

easy
hashingat-least-onceaggregation

You drain a batch of up to 5,000,000 events, each (aggregate_id BIGINT, aggregate_version INT, event_type, payload). The log guarantees order within one aggregate only; the batch merges 64 partitions, and a relay failover has redelivered a range, so an older version for an aggregate can appear after a newer one. Given a map of last_applied_version per aggregate, produce the events worth applying, at most one per (aggregate_id, version), plus the count discarded. Target O(n) time. State the memory for 2,000,000 distinct aggregates and what you do when it does not fit.

Approach
  1. One pass, one hash map from aggregate_id to the highest version kept, and a discard counter. An event whose version is at or below last_applied_version for its aggregate is dropped without further work, which is the whole reason the event carries its version rather than a delta. O(n) expected time, O(d) space in distinct aggregates.
  2. Keep the maximum, never the last occurrence. The redelivered range means the final appearance of an aggregate in the batch can be an older version than one seen earlier in the same batch, so last-wins applies stale state over newer state and the projection regresses with no error anywhere.
  3. Cost the memory instead of calling it large: an 8-byte key plus a 4-byte version is 12 bytes of payload, and an open-addressed table held at a 0.7 load factor costs roughly 17 bytes per entry before per-slot metadata, so 2,000,000 aggregates is tens of megabytes in a native layout and several times that in a runtime that boxes both key and value.
  4. If the distinct set exceeds memory, partition on hash(aggregate_id) mod P and reduce each partition independently. Every event for one aggregate hashes to the same partition, so the per-partition result is exact and the merge is concatenation rather than a second reduction.
Follow-up
  • The payload is a patch rather than a snapshot, so applying only the highest version loses the intermediate changes. What changes in your reduction?
  • How do you detect that version 7 arrived while version 6 was never delivered, and what should the consumer do about the gap?

Built from the rounds and topics Lincoln Financial candidates report.

Small steps. Visible outcomes.0 / 7 completed
ONE WEEK · YOUR PACE

Prepare, practise & reflect

One practical outcome each day. Spend longer where you need it.

0 / 7 done
01Map the Lincoln Financial loop
  • Write out the reported sequence: Phone Screen, Hiring Manager Discussion, Panel 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 3 reported rounds, with the weakest marked.

02Work AWS (Amazon Web Services)
  • Spend the session on AWS (Amazon Web Services), which Lincoln Financial candidates report being tested on.
  • Write one worked example in AWS (Amazon Web Services) and time yourself on it.

Deliverable: One timed worked example in AWS (Amazon Web Services).

03Work Hibernate
  • Spend the session on Hibernate, which Lincoln Financial candidates report being tested on.
  • Write one worked example in Hibernate and time yourself on it.

Deliverable: One timed worked example in Hibernate.

04Work JPA (Java Persistence API)
  • Spend the session on JPA (Java Persistence API), which Lincoln Financial candidates report being tested on.
  • Write one worked example in JPA (Java Persistence API) and time yourself on it.

Deliverable: One timed worked example in JPA (Java Persistence API).

05Answer out loud: Technical & Framework Deep Dives
  • Answer aloud, timed: How do you diagnose and resolve performance bottlenecks or lazy loading issues when using Hibernate and JPA?
  • Answer aloud, timed: Can you explain the differences between optimistic and pessimistic locking in an enterprise database application?

Deliverable: Spoken answers to 2 reported Technical & Framework Deep Dives question(s), under time.

06Answer out loud: Cloud & System Architecture
  • Answer aloud, timed: Walk me through an application migration project you led or contributed to. How did you transition services to AWS?
  • Answer aloud, timed: What AWS services would you use to design a highly available, fault-tolerant batch processing system?

Deliverable: Spoken answers to 2 reported Cloud & System Architecture question(s), under time.

07Answer out loud: Behavioral & Project History
  • Answer aloud, timed: Walk me through a complex software project you worked on from beginning to end, highlighting your specific contributions and the business value delivered.
  • Answer aloud, timed: Tell me about a time when you had to gather requirements from non-technical business stakeholders. How did you translate those into a technical design?

Deliverable: Spoken answers to 2 reported Behavioral & Project History 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 handle state management and session timeouts when working with frontend frameworks like JSF or Prim

medium
Technical & Framework Deep Dives

How do you handle state management and session timeouts when working with frontend frameworks like JSF or Primefaces?

Approach
  1. Pick a story where you made the decision, not one where you watched it.
  2. State the situation in two sentences and spend the rest on the reasoning.
  3. Give the blast radius: what could have broken, and what you measured.
  4. 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?

Walk me through a complex software project you worked on from beginning to end, highlighting your specific con

medium
Behavioral & Project History

Walk me through a complex software project you worked on from beginning to end, highlighting your specific contributions and the business value delivered.

Approach
  1. Pick a story where you made the decision, not one where you watched it.
  2. State the situation in two sentences and spend the rest on the reasoning.
  3. Give the blast radius: what could have broken, and what you measured.
  4. 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 a time when you had to gather requirements from non-technical business stakeholders. How did you

medium
Behavioral & Project History

Tell me about a time when you had to gather requirements from non-technical business stakeholders. How did you translate those into a technical design?

Approach
  1. Pick a story where you made the decision, not one where you watched it.
  2. State the situation in two sentences and spend the rest on the reasoning.
  3. Give the blast radius: what could have broken, and what you measured.
  4. 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 a situation where you had a disagreement with a technical lead or manager regarding an architectural

medium
Behavioral & Project History

Describe a situation where you had a disagreement with a technical lead or manager regarding an architectural decision. How did you resolve it?

Approach
  1. Pick a story where you made the decision, not one where you watched it.
  2. State the situation in two sentences and spend the rest on the reasoning.
  3. Give the blast radius: what could have broken, and what you measured.
  4. 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 prioritize your tasks when working on multiple high-priority projects with tight deadlines?

medium
Behavioral & Project History

How do you prioritize your tasks when working on multiple high-priority projects with tight deadlines?

Approach
  1. Pick a story where you made the decision, not one where you watched it.
  2. State the situation in two sentences and spend the rest on the reasoning.
  3. Give the blast radius: what could have broken, and what you measured.
  4. 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?

Share an example of a time when you identified a major bug or performance issue in production. What steps did

medium
Behavioral & Project History

Share an example of a time when you identified a major bug or performance issue in production. What steps did you take to mitigate and permanently fix the issue?

Approach
  1. Pick a story where you made the decision, not one where you watched it.
  2. State the situation in two sentences and spend the rest on the reasoning.
  3. Give the blast radius: what could have broken, and what you measured.
  4. 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 handle state management and session timeouts when working with frontend frameworks like JSF or Primefaces?

  • 02

    Walk me through a complex software project you worked on from beginning to end, highlighting your specific contributions and the business value delivered.

  • 03

    Tell me about a time when you had to gather requirements from non-technical business stakeholders. How did you translate those into a technical design?

  • 04

    Describe a situation where you had a disagreement with a technical lead or manager regarding an architectural decision. How did you resolve it?

PracHub preparation framework ↗
Is there a live coding or LeetCode-style test in the interview process?

Typically, no. Lincoln Financial focuses much more on your past project experiences, architectural understanding, and practical knowledge of frameworks rather than abstract algorithmic puzzles. Be prepared to talk through your resume in detail.

Lincoln Financial Software Engineer candidate reports ↗
How long does the entire hiring process usually take?

The process can range from two weeks to two months. It often depends on the urgency of the hiring team and the specific role level. Keeping in touch with your recruiter is key to navigating the timeline.

Lincoln Financial Software Engineer candidate reports ↗
What is the hybrid or remote work policy for Software Engineers?

Lincoln Financial generally operates on a hybrid model, requiring some days in the office depending on the location (such as Radnor, PA or Greensboro, NC) and the specific team's needs. This should be clarified during your initial recruiter screen.

Lincoln Financial Software Engineer candidate reports ↗
How heavily is AWS knowledge weighted during the interview?

Very heavily, especially for senior roles. Because of the ongoing modernization efforts, having a strong grasp of AWS services, cloud security, and migration strategies is highly valued and frequently tested.

Lincoln Financial Software Engineer candidate reports ↗
What is the culture like within the engineering teams?

The culture is collaborative, structured, and professional, characteristic of a major financial institution. Teams place a high value on compliance, security, and steady, reliable software delivery.

Lincoln Financial Software Engineer candidate reports ↗
What topics does Lincoln Financial test in interviews?

Lincoln Financial interviews most often cover Stakeholder Management, Behavioral Interviewing, Analytical Thinking, Python, and Requirement Gathering. The exact emphasis depends on the specific role you apply for.

Lincoln Financial 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.