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Extreme-Scale, Nano & Fundamental Engineering

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Molecular Engineer

Designing molecules for a target property and handing on candidates a chemist could attempt to make.

Mid Full-Time On-site — Kolkata, West Bengal, India Permanent

Compensation

Engagement

Full-Time

Permanent role. Full-time commitment. This is an on-site role at Kolkata. It is not remote and not hybrid.

Scope of role

Drive specific initiatives with minimal supervision. Deepen craft. Begin mentoring others.

Research classification

Computational Computational research Level 3 · Engineer and Scientist Molecular Engineering & Computational Chemistry →

Computing quantities that cannot be obtained in closed form, from established physics. Reproducible calculations, convergence and error budgets, released code and datasets.

Computational research. Computed from established physics. A computed number is a prediction, and it is only as good as its convergence, its error budget, and whatever data it can be checked against.

Scale range 10^-10 m to 10^-7 m

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10-100 m 100 m 10100 m
Experiments reach here 3 bands no experiment reaches This role

A computed molecular property is a prediction from a chosen level of theory, not a measurement. Density functional theory results depend on the functional; a number quoted without the functional and basis set is not reproducible. Predictions from this division are candidates for synthesis and testing, and are described that way rather than as discovered materials. Scientific integrity is a condition of every role in this department. Assumptions are stated separately from conclusions. Uncertainty is reported. Negative and inconclusive results are written up, not discarded. Speculative work is labelled speculative, including when that makes it less impressive. Fabrication, falsification, and presenting a simulation as a measurement end an engagement here.

Scale bands are a research classification, not a claim of experimental reach. Most of this span cannot be probed by any apparatus that exists: nothing below about 10^-19 m has been measured directly, and anything at 10^26 m or beyond is inferred from observation rather than engineered. Every opportunity states the kind of work it actually is.

01 — The role

Why this role exists at EduRankAI

Department of Extreme-Scale, Nano & Fundamental Engineering, Division D04: Molecular Engineering & Computational Chemistry. This division models molecular systems and designs candidate molecules and materials computationally. Every prediction is reported with the level of theory and the basis set that produced it, and is checked against experimental data where any exists. This position: Designing molecules for a target property and handing on candidates a chemist could attempt to make. Scale range for this work: 10^-10 m to 10^-7 m. Research classification: Computational. Computing quantities that cannot be obtained in closed form, from established physics. Evidential standing: Computational research. Computed from established physics. A computed number is a prediction, and it is only as good as its convergence, its error budget, and whatever data it can be checked against. A computed molecular property is a prediction from a chosen level of theory, not a measurement. Density functional theory results depend on the functional; a number quoted without the functional and basis set is not reproducible. Predictions from this division are candidates for synthesis and testing, and are described that way rather than as discovered materials. Scale bands are a research classification, not a claim of experimental reach. Most of this span cannot be probed by any apparatus that exists: nothing below about 10^-19 m has been measured directly, and anything at 10^26 m or beyond is inferred from observation rather than engineered. Every opportunity states the kind of work it actually is. Level 3 (Engineer and Scientist). A whole problem end to end: framing it, doing the work, and reporting the result with its limits.

02 — The work

What you will own

  • 01 Model molecular systems at the level of theory the question actually requires, and justify that choice.
  • 02 Investigate molecular properties: structure, energetics, spectra, reactivity.
  • 03 Simulate molecular interactions, including solvent and temperature where they matter.
  • 04 Develop candidate molecules and materials and rank them by computed properties with uncertainty.
  • 05 Compare predictions with experimental data whenever data exists, and report the disagreement when it does not agree.
  • 06 Maintain workflows that another person can rerun and obtain the same numbers from.
  • 07 Own a whole problem end to end: framing it, doing the work, and reporting the result with its limits.
  • 08 Review a colleague's work when asked, and say plainly when a result is not supported by its method.

03 — The expertise

What we look for

Can explain what a basis set is, and what changes when you change one.Has run a geometry optimisation and can say how convergence was judged.Understands the difference between a force field and an electronic-structure calculation, and when each is appropriate.Thermodynamics to the level of relating a free energy difference to an equilibrium constant.Python for building and analysing simulation workflows.PythonC++Scientific computing

04 — The bar

Who thrives here

  • Education: Master's degree or doctorate in a relevant discipline, or equivalent demonstrated research output.
  • Experience: 2 to 5 years of relevant work, or a doctorate in the field.
  • Scope of the role: A whole problem end to end: framing it, doing the work, and reporting the result with its limits.
  • Must have: Can explain what a basis set is, and what changes when you change one. Also: Has run a geometry optimisation and can say how convergence was judged.
  • Portfolio: at least one piece of work — code, a written result, a thesis chapter, a preprint — that somebody outside your institution can read and assess. It does not need to be published.

Terms of Engagement

How working time works at this level

A scheduled week: five days, eight hours a day, with two full rest days and latitude over when within the day you work.

Type

Mid-level

Working days

5 per week

Rest days

2 per week

Scheduled week

40 hrs

Per day

8h

Measured by

Objectives agreed at the start of each cycle. Hours recorded for compliance are never used as a performance score.

Where this stands legally

Within the 9-hour day and 48-hour week ceiling of the applicable state Shops and Establishments Act, with at least 24 consecutive hours of weekly rest and a break of at least 30 minutes after five hours of continuous work. Hours are recorded for statutory compliance only. Work beyond the scheduled week is agreed in advance and compensated with time off in lieu.

The full per-level model is published at Working Hours by Level.

05 — Hiring process

What to expect after you apply

  1. 01

    Application review

    Every application is read personally within five business days. We respond either way.

  2. 02

    Take-home or live exercise

    Role-specific. Time-boxed. Real problems we are actually working on, not invented puzzles.

  3. 03

    Conversations

    Deep technical and values conversations with the team you would join. No trick questions. No panel ambushes.

  4. 04

    Offer or honest no

    If yes: digital offer letter, signed in-portal, transparent terms. If no: written feedback if you want it.

The standard

What you deliver, and how it is judged

Deliverables

  • Calculations reported with functional, basis set, convergence criteria and software version.
  • Candidate lists ranked with a stated uncertainty, described as candidates for testing.
  • Validation against experimental data where it exists, including the cases that disagreed.
  • Reusable workflows with a recorded environment.

Evaluation criteria

  • Whether the level of theory is appropriate to the question and justified in writing.
  • Whether convergence was tested rather than assumed.
  • Whether an experimental comparison was attempted and honestly reported.
  • Reproducibility of every reported number.

Preferred, not required

Nothing in this list is a bar to applying.

Practical experience with a molecular dynamics package, including how an ensemble was chosen.Density functional theory in enough depth to justify a functional choice in writing.Statistical mechanics: partition functions, ensembles, free energy methods.Experience comparing a computed property against experimental data and explaining the gap.Enhanced sampling methods.Machine-learned interatomic potentials, with their validity range stated.Wet-laboratory experience in synthesis or characterisation.

Tools you would work in

A DFT package (Quantum ESPRESSO, VASP, ORCA or equivalent)A molecular dynamics engine (GROMACS, LAMMPS or equivalent)RDKit or an equivalent cheminformatics toolkitASE or an equivalent atomistic frameworkWorkflow orchestrationGit

Reports to: Molecular Engineering & Computational Chemistry Lead

Works with: D03, D05, D06, D12, D13

Before you start

What we will collect. What it costs. What we will not do with it.

We will collect

  • Name, email, phone — Account + application updates. No marketing.
  • Resume / portfolio link — Human review of your work.
  • Date + place of birth — Identity verification only.
  • Your written responses — Selection rubric. Read by humans.
  • Government ID (later) — Anti-fraud at offer / interview stage. Not at signup.

We will never

  • Sell your data
  • Share with third-party recruiters
  • Use for advertising
  • Train models on it
  • Send marketing email

Our situation

EduRankAI is a small, independent organization building long-term capabilities in educational intelligence, advanced AI systems, and research infrastructure. We take no advertiser money, no donations with strings attached, and no investor pressure on hiring decisions. Applying is free, and every application is read by a human — recruitment, technical, academic and leadership teams. It buys us the right to be honest.

Full transparency policy Questions? Email us

Ready to apply?

We read every application personally. If you are the right person for this role — regardless of pedigree, background, or where you are based — you will hear back from us within five business days.

Apply through this page. You will be asked for your education, your experience, and links to work we can actually read — a repository, a write-up, a thesis chapter, a preprint. Send the piece of work you would defend, not the one with the best title. If a result in it turned out to be wrong, say so; we would rather read that than not know. Every application is read by a person. We assess applications on evidence of the work. We do not filter on institution, on age, on gender, on caste, on religion, on disability, or on where you are from. If any part of this process is inaccessible to you, tell us and we will change it for you.

Mid Full-Time

Molecular Engineer

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