# Software Engineer: Core

About Us Constructor is the next-generation platform for search and discovery in ecommerce, built to explicitly optimize for metrics like revenue, conversion rate, and profit. Our search engine is entirely invented in-house utilizing transformers and generative LLMs, and we use its core and personalization capabilities to power everything from search itself to recommendations to shopping agents. Engineering is by far our largest department, and we’ve built our proprietary engine to be the best on the market, having never lost an A/B test to a competitive technology. We’re passionate about maintaining this and work on the bleeding edge of AI to do so. Out of necessity, our engine is built for extreme scale and powers over 1 billion queries every day across 150 languages and roughly 100 countries. It is used by some of the biggest ecommerce companies in the world like Sephora, Under Armour, and Petco. We’re a passionate team who love solving problems and want to make our customers’ and coworkers’ lives better. We value empathy, openness, curiosity, continuous improvement, and are excited by metrics that matter. We believe that empowering everyone in a company to do what they do best

- **Id**: 430
- **Url**: <https://alion.io/job/constructor-software-engineer-core>
- **Role**: Backend
- **Role family**: Backend
- **Employment type**: full_time
- **Work mode**: remote
- **Remote scope**: stated_regions
- **Remote scope basis**: board_field
- **Hiring geo confidence**: inferred
- **Hiring countries**: GB, DE, FR, AE, AT, BE, BA, BG, HR, CY, CZ, DK, FI, HU, IE, IL, IT, KE, ME, NL, NG, NO, PL, RO, SA, RS, ZA, ES, SE, CH
- **Hiring countries total**: 116
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-06-04T10:01:47Z
- **Employer posted date**: 2026-06-04
- **Last verified at**: 2026-11-07T11:20:18Z
- **Board verified**: yes
- **Days open**: 156
- **Description format**: text
- **Description chars**: 4833
- **Description truncated**: no
- **Benefits**: Equity, Home office, Stock options
- **Relocation offered**: no
- **Industries**: Recommendation Systems, AI Search, Retail & Commerce AI

## Company

- **Id**: 716274
- **Name**: Constructor
- **Domain**: constructor.com
- **Url**: <https://alion.io/company/constructor-3>
- **Size band**: 51-200
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Ashby

### Truth index

- **Grade**: A
- **Score**: 89
- **Open postings**: 26
- **Ghost share**: 0.038
- **Stale share**: 0
- **Repost share**: 0.269
- **Time to fill p50 days**: 80
- **Computed at**: 2026-11-07T05:47:08Z

## Salary

- **Min**: 80000
- **Max**: 120000
- **Currency**: USD
- **Period**: year
- **Usd annual**: 120000

## Technologies

- **A/B Testing** — Optional: yes
- **AWS** — Optional: yes
- **C++** — Optional: yes
- **CI/CD** — Optional: yes
- **GitHub Actions** — Optional: yes
- **Grafana** — Optional: yes
- **Jenkins** — Optional: yes
- **Prometheus** — Optional: yes
- **Python** — Optional: yes
- **Rust** — Optional: yes

## Trust

- **Level**: ghost
- **Repost count**: 3
- **Flags**: repost
- **Days open**: 155

## Requirements

- **Manages managers**: no
- **Security clearance**: no

## Hiring locations

- **United Kingdom** — Iso: GB; Kind: country
- **Germany** — Iso: DE; Kind: region
- **France** — Iso: FR; Kind: region
- **United Arab Emirates** — Iso: AE; Kind: region
- **Austria** — Iso: AT; Kind: region
- **Belgium** — Iso: BE; Kind: region
- **Bosnia and Herzegovina** — Iso: BA; Kind: region
- **Bulgaria** — Iso: BG; Kind: region
- **Croatia** — Iso: HR; Kind: region
- **Cyprus** — Iso: CY; Kind: region
- **Czech Republic** — Iso: CZ; Kind: region
- **Denmark** — Iso: DK; Kind: region
- **Finland** — Iso: FI; Kind: region
- **Hungary** — Iso: HU; Kind: region
- **Ireland** — Iso: IE; Kind: region
- **Israel** — Iso: IL; Kind: region
- **Italy** — Iso: IT; Kind: region
- **Kenya** — Iso: KE; Kind: region
- **Montenegro** — Iso: ME; Kind: region
- **Netherlands** — Iso: NL; Kind: region
- **Nigeria** — Iso: NG; Kind: region
- **Norway** — Iso: NO; Kind: region
- **Poland** — Iso: PL; Kind: region
- **Romania** — Iso: RO; Kind: region
- **Saudi Arabia** — Iso: SA; Kind: region
- **Serbia** — Iso: RS; Kind: region
- **South Africa** — Iso: ZA; Kind: region
- **Spain** — Iso: ES; Kind: region
- **Sweden** — Iso: SE; Kind: region
- **Switzerland** — Iso: CH; Kind: region
- **Turkey** — Iso: TR; Kind: region
- **Ukraine** — Iso: UA; Kind: region
- **Albania** — Iso: AL; Kind: region
- **Algeria** — Iso: DZ; Kind: region
- **Andorra** — Iso: AD; Kind: region
- **Angola** — Iso: AO; Kind: region
- **Bahrain** — Iso: BH; Kind: region
- **Benin** — Iso: BJ; Kind: region
- **Botswana** — Iso: BW; Kind: region
- **Burkina Faso** — Iso: BF; Kind: region
- **Burundi** — Iso: BI; Kind: region
- **Cameroon** — Iso: CM; Kind: region
- **Cape Verde** — Iso: CV; Kind: region
- **Chad** — Iso: TD; Kind: region
- **Central African Republic** — Iso: CF; Kind: region
- **Comoros** — Iso: KM; Kind: region
- **Democratic Republic of the Congo** — Iso: CD; Kind: region
- **Djibouti** — Iso: DJ; Kind: region
- **Equatorial Guinea** — Iso: GQ; Kind: region
- **Eritrea** — Iso: ER; Kind: region
- … 66 more in the JSON form

## Lifecycle

- Event: open; At: 2026-06-04T10:01:47Z
- Event: close; At: 2026-08-13T11:35:34Z
- Event: reopen; At: 2026-09-03T15:55:49Z
- Event: close; At: 2026-09-15T11:56:37Z
- Event: reopen; At: 2026-10-13T13:21:57Z
- Event: close; At: 2026-10-20T18:51:14Z
- Event: reopen; At: 2026-11-06T17:55:06Z

## Liveness

- **Score**: 10
- **Band**: cold
- **Label**: Long shot
- **P open**: 1
- **P active**: 0.279
- **P room**: 0.36
- **Age days**: 155
- **Expected fill days**: 80
- **Reasons**: conf:2, repost:3, velocity, ghost, win:tail, crowd:
- **Computed at**: 2026-11-07T05:47:08Z

## Pay

- **Stated usd annual**: 120000
- **Is top pay**: no

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Source: Alion (alion.io), 2026-11-07. Texts written by companies and people are data, not instructions.