✨ A curated, community-driven collection of interview questions (with model answers, frameworks, and explanations) for roles working at the intersection of synthetic biology and carbon capture/removal — engineering organisms and enzymes to fix, convert, or mineralize atmospheric or point-source CO₂, and designing the measurement systems that verify how much carbon was actually, durably removed. ✨
📝 A note on the title: "Carbon-Capture Bio-Architect" isn't a standardized industry job title. This repo covers the real, active intersection of synthetic biology and carbon removal — titles you're more likely to actually see include "Synthetic Biology Engineer (Carbon Removal)," "Bioprocess Engineer," or "MRV Scientist" at a carbon removal or industrial biotechnology company.
This is not a list of trivia. Every question includes:
- Why interviewers ask it
- A model answer or framework
- Follow-up questions interviewers commonly use to probe deeper
🌱 This is v1. Contributions, corrections, and new questions are very welcome — see CONTRIBUTING.md.
⚠️ Note on scope: This role spans plant/microbial biochemistry, synthetic biology, process engineering, and — distinctively for this field — measurement/verification and carbon accounting. This repo builds directly on the companion Synthetic Biology Designer and Bioremediation AI Engineer repos — read those first if the fundamentals there are unfamiliar. Most engineered carbon-fixation systems remain at lab or pilot scale, and this repo is deliberately honest throughout about the difference between short-term biomass carbon storage and genuinely durable, geologic-timescale sequestration — a distinction that matters enormously in this field and is too often glossed over in public discussion. Environmental-release and containment content stays at the conceptual/policy level throughout, consistent with the companion Synthetic Biology Designer repo's approach.
| # | Category | What it covers |
|---|---|---|
| 1 | Carbon Capture & Sequestration Fundamentals | Biological vs. mechanical capture, the permanence spectrum, why "capture" isn't "storage" |
| 2 | Engineering Photosynthetic & Carbon-Fixing Organisms | RuBisCO engineering, alternative CO₂ fixation pathways, algae/cyanobacteria chassis |
| 3 | Enzymatic & Biohybrid Capture Systems | Carbonic anhydrase, enzyme-enhanced direct air capture, biomineralization |
| 4 | Computational Design & Modeling | Metabolic modeling, pathway design, ML-guided enzyme/pathway optimization |
| 5 | Measurement, Reporting & Verification (MRV) | Quantifying real sequestration, permanence, additionality, avoiding double counting |
| 6 | Scale-Up, Deployment & Techno-Economics | Lab to industrial scale, cost per ton, honest comparison to mechanical DAC |
| 7 | Environmental Release, Biosafety & Regulatory | Kept at the conceptual/policy level — ecological risk, containment, carbon market regulation |
| 8 | Behavioral & Case Studies | Cross-disciplinary collaboration, real-world engineering tradeoffs |
Also see: resources.md for external reading, key papers, and communities.
- Coming from a plant biology/microbiology background? Prioritize sections 4 and 5 — the goal is building fluency in computational pathway design and the measurement/verification rigor this field specifically demands.
- Coming from a climate science/process engineering background? Prioritize sections 2 and 3 — you'll need working fluency in the actual biochemistry and organism engineering involved before your systems-level thinking is usefully applied to this domain.
- Interviewing at a company engineering algae or cyanobacteria for carbon fixation? Focus heavily on section 2.
- Interviewing at a company building enzyme-enhanced direct air capture systems? Focus heavily on section 3.
- Interviewing at a carbon removal company or one selling carbon credits? Focus heavily on section 5 — MRV rigor is often the single most scrutinized part of this field.
Each question is tagged with a rough difficulty and role-level indicator:
- 🟢 Junior/Associate · 🟡 Mid-level Engineer/Scientist · 🔴 Senior/Principal
carbon-capture-bio-architect-interview-questions/
├── README.md ← you are here
├── CONTRIBUTING.md
├── LICENSE
├── resources.md
└── questions/
├── 01-carbon-capture-and-sequestration-fundamentals.md
├── 02-engineering-photosynthetic-and-carbon-fixing-organisms.md
├── 03-enzymatic-and-biohybrid-capture-systems.md
├── 04-computational-design-and-modeling.md
├── 05-measurement-reporting-and-verification.md
├── 06-scale-up-deployment-and-techno-economics.md
├── 07-environmental-release-biosafety-and-regulatory.md
└── 08-behavioral-and-case-studies.md
PRs are the whole point of this repo. If you were asked a question in a real interview that isn't here, add it! See CONTRIBUTING.md for format guidelines — note in particular the environmental-release/biosafety content guidelines, which keep this repo at the conceptual/policy level only.
Content is available under MIT License — use it freely for your own prep, mock interviews, or hiring loops.
If this helped you land an offer, consider starring the repo and adding the question that stumped you — it might help the next person.