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We are looking for a skilled Software Developer to join our growing team. The ideal candidate is a strong communicator with excellent English skills, capable of managing multiple projects and clients simultaneously while delivering high-quality software solutions.
Portuguese language skills are a plus but not required.
Responsibilities
Collaborate directly with clients to gather requirements and provide technical solutions.
Manage multiple projects and priorities in a fast-paced environment.
Communicate project status, risks, and technical recommendations clearly to stakeholders.
Participate in software architecture, code reviews, and technical planning.
Work closely with cross-functional teams to ensure successful project delivery.
Maintain high standards of code quality, documentation, and security.
Requirements
Technical Skills
Experience in software development using modern programming languages and frameworks.
Experience with APIs, databases, cloud platforms, and version control systems.
Understanding of software architecture, testing, and deployment processes.
Ability to learn new technologies quickly and adapt to changing project requirements.
Communication Skills
Excellent written and spoken English.
Ability to communicate technical concepts clearly to both technical and non-technical stakeholders.
Strong client-facing and relationship management skills.
Professional Skills
Proven ability to handle multiple clients and projects simultaneously.
Strong problem-solving and analytical thinking.
Excellent organizational and time management skills.
Ability to work independently with minimal supervision.
Team-oriented mindset with a proactive approach to challenges.
Preferred Qualifications
Portuguese language proficiency (preferred but not required).
Experience working with international clients and remote teams.
Experience in Agile/Scrum development environments.
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We are looking for a freelancer, B2B contractor, small team, or gamedev studio to develop a technical PoC for a deterministic skill-based competitive gaming platform.
The purpose of the PoC is to demonstrate that the gameplay operates without any element of randomness, under identical conditions for all players, with the ability to replay the session, verify player inputs, and prepare technical evidence materials for a regulatory review process.
The scope includes a simple arena or mini-game built in Unity, preferably using Photon Quantum or an equivalent deterministic architecture, input recording, replay/ghost mode, state/hash logging, a fixed map, fixed rules, no RNG, a demonstrable build, and technical documentation.
Required experience includes Unity, C#, multiplayer systems, deterministic simulation, replay systems, lockstep/rollback architecture, or Photon Quantum/Fusion.
An NDA will be required before sharing the full brief. Full IP assignment for the source code, documentation, and builds will also be required.
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This project proposes a Terminal-Bench task focused on financial operations and spreadsheet automation rather than traditional software engineering. The agent is provided with a collection of Excel workbooks containing transaction records, account summaries, and reconciliation reports that contain multiple inconsistencies introduced during data processing.
The objective is to identify and repair discrepancies between transaction-level data and account-level summaries using command-line tools and available spreadsheet-processing libraries. The agent must analyze workbook contents, detect missing or duplicated entries, correct formula errors, update derived calculations, and ensure that final balances match across all reports.
The task is designed to reflect realistic accounting and finance workflows that organizations routinely perform. Success is verified programmatically through independent tests that validate balance consistency, formula correctness, reconciliation accuracy, and preservation of non-target workbook content.
Unlike common coding benchmarks, this task emphasizes data integrity, spreadsheet manipulation, financial reasoning, and careful handling of structured business documents. The challenge requires the agent to inspect existing files, understand relationships between multiple worksheets, apply targeted corrections, and produce a fully reconciled set of outputs without modifying verification artifacts.
The environment is fully self-contained and offline, with all required datasets included inside the task package. Automated tests verify that reconciliation rules are satisfied while ensuring that agents cannot bypass validation through hardcoded outputs or direct modification of test files.
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wraz ze wspólnikiem prowadzimy kilka projektów/firm i brakuje nam rąk do pracy
szukamy subkontraktorów, zapaleńców, którzy pomogą nam pociągnąć projekty, bo nam nie starcza czasu na rozwój naszych startupów
przykładowe projekty:
wdrożenie platformy o podstawowych funkcjonalnościach typu CRM - budżet 14-20 tys
wdrożenie funkcjonalności na platformie BITRIX i stawianie strony internetowej
postawienie sklepu, podpięcie pod hurtownie - budżet do ustalenia
stworzenie automatyzacji - agent AI dzwoniący i umawiający spotkania z potencjalnymi klientami, panel do zarządzania rozmowami - budżet do ustalenia
postawienie strony wizytówki dla firmy
mamy też bardziej złożone projekty fullstackowe, używające AI, RAG, chatboty AI, itp
potrzebny nam ktoś, kto mocno używa AI do pisania kodu, wie jak zoptymalizować agenta do tworzenia jakościowego kodu, ale też ma kilka lat doświadczenia w pisaniu kodu produkcyjnego dla klientów
musisz być ogarniętym developerem fullstackowym, backend, frontend, bazy danych, SQL, serwery, docker, nie powinny być dla Ciebie czymś nowym, mieć dobrą znajomość woocommerce/wordpress, bądź shopify, przynajmniej jednego backendowego i frontendowego frameworka (np. nodejs/react), powinieneś mieć styczność z pisaniem aplikacji używających AI - tworzenie chatbotów, automatyzacji, RAGów
jednym słowem szukam trochę człowieka orkiestra, nie musisz znać wszystkiego perfect, pomożemy Tobie technicznie w tych projektach
wynagrodzenie do ustalenia indywidualnie z potencjalnymi kandydatami :)
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Build a sandbox with dockerfile where coding AI agents will be trained with proper rubrics
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I have an unfinished java springboot application there a multiple (small) things that need to be fixed. For instance I want to implement syslog to /dev/log (dgram is (not yet) supported in java springboot)
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I need help building realistic, terminal-based STEM research tasks used to evaluate frontier AI models (GPT, Gemini, etc.).
What you'll build:
A self-contained coding task that looks like real research work (analyzing datasets, running simulations, validating hypotheses, comparing methods). Not a textbook problem.
Each submission must include:
instruction.md (workflow, inputs, outputs, success criteria)
Reproducible Docker environment with data
Oracle solution (solve.sh) that fully solves the task
Deterministic tests for verification
task.toml metadata
All packaged into one zip
Quality bar:
Multi-step, research-grade workflow
Hard enough that frontier models fail more than 80% of the time
Oracle passes local tests 3 out of 3 times
Objectively verifiable outputs
No LLM-generated content allowed
Who's a fit:
STEM background (biology, chemistry, physics, ML, data science, etc.) with strong Python and Docker skills.
Payout: $100 per accepted submission.
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We are looking for a Data Scientist to join our Revenue Operations team. You will be responsible for building and maintaining machine learning models that directly impact our bottom line. The primary focus of this role is to enhance our B2B sales efficiency by developing predictive models that score and prioritize leads.
If you have a track record of using Python and SQL to turn raw CRM data into a tactical asset for sales reps, we want to hear from you.
Key Responsibilities
Model Development: Design, build, and deploy lead scoring models to identify which prospects have the highest probability of conversion.
Algorithm Selection: Utilize classification algorithms (specifically Logistic Regression and Random Forest) to predict customer behavior.
Data Engineering: Write complex SQL queries to extract, clean, and aggregate B2B sales data from our data warehouse and CRM.
Feature Engineering: Transform raw sales interaction data (email opens, clicks, website visits, firmographics) into meaningful features that improve model accuracy.
Performance Tuning: Monitor model performance, retrain models as needed, and maintain a target accuracy of 80%+ to ensure sales confidence.
Stakeholder Collaboration: Work directly with the B2B sales team to integrate model predictions into their daily workflow (e.g., Salesforce/Pipedrive/HubSpot).
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# Request for Quotation — Airtable consultancy
## About us
We are a rental management company based in Krakow, managing apartments on behalf of property owners (short-term and long-term rentals). Our knowledge base, operational procedures, and data are currently kept in Google Drive and Google Sheets, and we are migrating to Airtable to support our operations at scale.
## Scope of work
We are looking for an Airtable consultant to help us with the following:
1. **Data migration from Google Sheets to Airtable** — including restructuring of the source data into a clean, normalized schema suitable for ongoing operational use.
2. **Integration with external booking systems** — automate the pulling of data from third-party booking platforms into Airtable.
3. **Operational workflow tools built in Airtable** - maintenance tracking, cleaning schedule...
## Availability
- Available to start immediately
- Daily availability throughout the engagement
## Engagement model
- Content and business questions are directed to management when needed
- Technical questions are directed to the technical contact
- Billed at an agreed hourly or daily rate
## What we want in your response
Please include:
1. **Brief introduction** of your background with Airtable
2. **Two or three examples** of comparable Airtable engagements — ideally involving interfaces, automations, data migration, and external integrations
3. **Hourly or daily rate** and any minimum engagement commitment
4. **Confirmation of immediate availability** and expected daily commitment
5. **Languages you work in** (English required; Polish preferred but not required)