Lemma vs HackerRank

HackerRank helps companies assess developers inside their hiring process. Lemma helps people build a lasting record of skill evidence they can bring to any process. They meet at the technical screen.

See the comparison

Coding assessment report

Company-run · Full-stack engineer role

Total score

84/100

For the hiring team

Group orders by customer100%
Fix a paginated API client80%
Review AI-generated code70%

Plagiarism check clearProctored

TypeScript

Skills Passport · Priya K.

Signed

SCI

Practice22/25

Proof28/40

Reliability12/20

Freshness15/15

Learned: type-safe APIs with Marek M.
60 min · rated 5 stars · 10 Oct
+5.0
Skill assessment passed · level 7.6
20 questions · integrity clear · 1 Oct
+10.0
Taught: generics with Ivo T.
30 min · rated 5 stars · 19 Sep
+7.5

How does Lemma compare with HackerRank?

HackerRank is a technical hiring platform: companies run take-home coding screens, live interviews and AI-led first rounds for a specific role. Lemma is a record the candidate keeps, built from rated sessions, adaptive assessments and linked work, with an SCI score per skill. A company-run screen assesses for one role; a Passport carries evidence between roles.

HackerRank and the Lemma Skills Passport compared
Dimension	HackerRank	Lemma Skills Passport
Who runs it	The hiring company, which sets up tests and interviews	You build the Passport; companies view it or invite you to an assessment
What it measures	Coding tests, from algorithm questions to real-world tasks, plus live and AI-led interviews	Evidence across sessions, adaptive assessments and linked work, per skill
Skills covered	Software development and related technical roles	Technical and non-technical skills, from code to design and product
Result	A report for the hiring company for that role	An SCI score per skill that stays on your Passport and keeps updating
Who keeps it	Screen results sit with the company that ran them; developers can also earn HackerRank certificates of their own	The Passport is yours to share with any employer or client
Best moment	Screening and interviewing for a specific open role	Before and between applications, and as evidence brought into a screen

What does HackerRank do well?

HackerRank is a mature technical hiring platform. Companies use it to run consistent coding assessments at scale, and its tests go beyond algorithm puzzles to real-world tasks and questions on working with AI tools.

A large library of coding questions and role-based Certified Assessments
Live technical interviews and an AI interviewer for first rounds
Integrity tools: AI-powered plagiarism detection, a proctor and identity verification

Checked against HackerRank's own pages on 14 October 2026. Sources

Coding assessment report

Company-run · Full-stack engineer role

Total score

84/100

For the hiring team

Group orders by customer100%
Fix a paginated API client80%
Review AI-generated code70%

12export async function fetchAll(url: string) {

13 let cursor: string | null = "";

14 while (cursor !== null) {

15 const page = await get(url, cursor);

Plagiarism check clearProctoredIdentity checked

What does Lemma add to a coding screen?

A company-run assessment answers one company's question at one moment. Lemma keeps the answer with the person, and adds evidence a single test cannot capture.

A record that travels

Evidence stays on your Passport, so you do not start from zero with every application, and an employer can see history rather than one sitting.

Evidence from working with people

Live sessions rated by the practitioner you worked with show how you explain, debug and collaborate, alongside assessment results.

Beyond engineering

SCI works the same way for design, product, data and other skills, so mixed teams can use one kind of evidence.

The Skills Passport How SCI is computed

Candidate review

Priya K.

Full-stack engineer · Passport shared 8 Oct

Signed

TypeScript

16 records

React

11 records

Node.js

9 records

TypeScript · evidence timeline

Learned: type-safe APIs with Marek M.
60 min · rated 5 stars · 10 Oct
+5.0
Skill assessment passed · level 7.6
20 questions · integrity clear · 1 Oct
+10.0
Taught: generics with Ivo T.
30 min · rated 5 stars · 19 Sep
+7.5

Assessment invite

SkillTypeScript

Questions15–25, adaptive

StatusSent 9 Oct

AccessEarly access

When should you choose HackerRank?

Choose HackerRank when your team needs a standard, proctored coding screen for many applicants to one engineering role, or a shared environment for live technical interviews. It is built for hiring teams running volume, and connects to applicant tracking systems such as Greenhouse.

A standard coding screen for many applicants
Live coding interviews in a shared environment
Proctoring and plagiarism checks on every attempt

Hiring pipeline

Full-stack engineer · 66 candidates

Applied

Kim H.

Omar F.

Coding screen

Anika J.84

Bas M.77

Cyrus T.69

Interview

Nadia W.88

Rui S.81

Coding screen scores out of 100 · proctored

When should you choose Lemma?

Choose Lemma when you want candidates to arrive with evidence rather than a CV, when the role mixes technical and non-technical skills, or when you are the candidate and want a record that outlasts one application. Candidate invites and the verification API are in early access for selected teams.

Candidates who arrive with evidence, not just a CV
Hiring across technical and non-technical skills
A candidate record that outlasts one application

Hiring review · Full-stack engineer

Priya K.

Shared 3 of 5 skills · link opened 8 Oct

TypeScript

5 records

Learned: type-safe APIs with Marek M.
60 min · rated 5 stars · 10 Oct
+5.0
Skill assessment passed · level 7.6
20 questions · integrity clear · 1 Oct
+10.0
Taught: generics with Ivo T.
30 min · rated 5 stars · 19 Sep
+7.5

68
React
3 sessionsLevel 7.1
61
Node.js
2 sessions1 repository

Questions about Lemma vs HackerRank

What are the alternatives to HackerRank?

Other company-run technical assessment platforms, such as Codility and TestGorilla, cover similar ground: screens, interviews and test libraries. Lemma is a different kind of alternative. Instead of a test each company runs, the candidate brings a Passport of evidence, and teams can invite them to an assessment.

Is HackerRank free?

Developers can create a free HackerRank account to practise. Its hiring products are sold to companies, and HackerRank's own pricing page lists the current plans. Lemma is in early access; join the list to hear when places open.

Can a company use Lemma and HackerRank together?

Yes. A Passport can inform who to invite to a screen and what to focus on in it, while a company-run coding assessment covers the specific tasks of the role.

Does Lemma run coding interviews?

Not as a hiring tool. Lemma's live sessions are one-to-one sessions between practitioners that produce evidence for both people. Inviting candidates to Lemma assessments is part of the technical hiring tools, which are in early access.

What is the difference between HackerRank and Codility?

Both run take-home screens and live technical interviews with integrity controls. On their own sites, HackerRank highlights its question library, role-based Certified Assessments and an AI interviewer; Codility highlights interviews in a VS Code environment and Skills Intelligence for mapping a team's skills. Trial both on your own roles.

Bring evidence, not just a profile.

Lemma is in early access. Join the list to build a Skills Passport with evidence anyone can inspect.

All comparisons

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Sources, checked on 14 October 2026