Contract
Senior Web Application Engineer — React
Hiring evidence involving TypeScript, React. First observed 14 Sept 2026; the response opens on justjoin.it.
- Technology
- TypeScriptReact
- Budget
- Not provided by source
- Work format
- Hiring
- Role family
- Software engineer
- Seniority
- Senior
- Observed
- 14 Sept 202614 days old
- Response destination
- justjoin.it
Source job details
Structured facts are published only when supplied by the source; missing values are never invented.
- Hiring organization
- cerebre
- Source reference
- OPP-20260914-1218
- Location evidence
- Remote; Poznań, Wrocław, Kraków, Warsaw and Tricity
- Employment type
- contractor
- Required skills
- React, TypeScript, complex enterprise interfaces, async APIs, authentication, data modelling, .NET/C# preferred, D3/Pixi/SVG/Canvas, GitLab CI/CD
- Expected duration
- Full-time; duration not published
What this signal says
The observed opportunity titled “Senior Web Application Engineer — React” enters this catalog as a market signal with a traceable source. Leadiy does not republish the original description. Instead, it separates a few decision-grade facts from the private operating record and adds context from the same demand dataset. That boundary matters: the public edition can help a developer or agency assess relevance, while the source remains responsible for complete requirements, eligibility, current status and the actual response flow. Any fact not shown here should be checked at that destination.
How the technology was normalized
The controlled technology reading for this record is TypeScript, React. That label is derived from explicit terms in the role, primary technology and stack fields; it is not inferred from the buyer’s identity or from private contact context. Normalization folds common spelling and naming variants into one catalog so this page can be compared with other records. A combination tag appears only when every required part of that combination is detected. The result is a search aid, not a guarantee that every named tool is equally central to the delivery scope.
Commercial format
Leadiy reads the buying motion as Hiring. This matters because the response shape for a deliverable, contractor seat, formal proposal and employment application is not interchangeable. The category is a classifier output rather than a legal characterization, and the original post wins if its terms change. The available duration wording is “Full-time; duration not published.” Work-location context is recorded as “100% remote B2B; Ukraine cross-border and agency-nominated eligibility not stated.”
Reading the budget
Budget data is unavailable from the source for this record. That is a statement about one missing field, not about whether the opportunity itself is public: this evidence page is published and indexable. Leadiy keeps the gap visible instead of inventing a midpoint or borrowing a number from another listing. Ask the source to confirm amount, currency, unit, inclusions and payment schedule before treating the opportunity as commercially qualified.
Demand context from Hiring Pulse
In the current 30-day Hiring Pulse, TypeScript appears in 277 of 1188 observed opportunities (23.3%). Counts are multi-label, so one opportunity may contribute to several technology buckets. Hiring Pulse is the contextual layer Leadiy adds beyond aggregation. It places the record against a verified observation window while keeping counting rules visible: technologies can overlap, the feed is not a census, and sparse groups are not disclosed as exact numbers. This evidence can support prioritization, not a forecast. The record still needs source-level verification, and the aggregate view deliberately omits direct leads, personal information, private outreach content and arbitrary micro-segments that could reveal too much.
Observation and publication timing
Leadiy first observed this signal on 14 Sept 2026, 08:32 UTC; at page render it is 13 days old. Its public eligibility time was calculated once from that observation using a deterministic 29.85-hour delay inside the promised 24–48 hour window. The delay is not the source publication age and should not be presented as one. It creates a clear product boundary: authenticated customers can work from the live matched feed, while search engines and unauthenticated visitors receive a later evidence edition. The stored eligibility timestamp prevents an early publish after restarts or repeated syncs.
What looks similar
Similarity is based on shared normalized technology tags and then recency, not on company identity or copied source prose. "Senior Software Engineer — Node.js / React", "Senior Fullstack Engineer", "Senior AI Engineer — Node.js & React" These neighbours are useful for comparing delivery shape, budget visibility and technology overlap. They are not duplicates and they do not imply that the same buyer, scope or qualification rules apply. When no suitable public neighbour exists, the page says so instead of padding the section with unrelated links. New public records can change this comparison set after their own delay and quality checks pass.
Where the response goes
This page’s action route is explicit: it opens Just Join IT on justjoin.it. Leadiy provides context and provenance, not an application proxy. A click can therefore lead to a third-party login or proposal workflow governed by that service’s own privacy, eligibility and payment rules. The public catalog never replaces those instructions and never publishes a hidden email address as an alternate route. Review the destination hostname, confirm that the opportunity is still active, and respond only through a path you trust.
Public evidence versus earlier access
Leadiy sells timing, not a different truth: the same opportunities, one day earlier. Subscribers receive the fresh matched feed and private workflow before a record crosses its public time fence. The later page remains complete enough to stand alone, with provenance, classification, budget reading, aggregate context and related records. Subscription is not preferential treatment from the buyer, and it cannot guarantee availability or success. It is earlier awareness plus an operational workspace; the public catalog is the delayed evidence layer.
The same opportunities, one day earlier.
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The button opens justjoin.it. That third-party page controls login, eligibility, proposal fields, privacy and the current status of the opportunity.