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Hi, I am Jason

Jason Manesis

Geoinformatics Engineer at Hellenic Space Center

Results-driven Geoinformatics Engineer with a strong academic foundation and extensive experience applying Machine and Deep Learning to Earth Observation challenges. I design and deploy high-performance geospatial pipelines across remote sensing preprocessing, semantic segmentation, and MLOps workflows for near-real-time environmental monitoring.

Skills

Work Experience

1
Hellenic Space Center

Oct 2025 - Present

Athens, Greece

National organization focused on space applications, Earth observation, and geospatial intelligence initiatives.

Geospatial Deep Learning Engineer

Oct 2025 - Present

Responsibilities:
  • Designed and managed a human-in-the-loop active learning pipeline that converts model inferences into vector geometries for expert correction and iterative retraining.
  • Developed a nationwide land cover mapping system using VHR imagery with DINO-based feature extraction and SAM-driven boundary refinement.
  • Engineered advanced preprocessing workflows including MAJA atmospheric correction, pansharpening, super-resolution, artifact-free stitching, and tiling.
  • Integrated canopy height estimation models with spectral and geometric features for multi-layer environmental intelligence.

Red Edge

Mar 2025 - Present

Athens, Greece

Geospatial analytics organization focused on advanced SAR and Earth observation processing methodologies.

Geospatial Deep Learning Engineer

Mar 2025 - Present

Responsibilities:
  • Built a robust SAR co-registration pipeline for VHR data using optical flow, keypoint matching, and deep learning across Spotlight, Stripmap, and Scan modes.
  • Developed a full RAW SLC to ARD workflow with radiometric calibration, despeckling, and orthorectification for cross-sensor consistency.
  • Optimized co-registration for large-scale datasets to reduce processing time while preserving sub-pixel alignment quality.
2

3

Athens, Greece

Research-intensive university with multiple geoinformatics and AI projects in remote sensing.

AI Research Engineer

Jan 2025 - Jun 2025

Responsibilities:
  • Engineered an ultra-light U-Net architecture for on-board marine plastic detection under strict orbital power and memory constraints.
  • Developed pruning, transfer learning, and quantization workflows for real-time low-power edge inference while preserving multispectral radiometric fidelity.
Geospatial Deep Learning Engineer

Mar 2022 - Oct 2025

Responsibilities:
  • Architected and deployed automated near-real-time MLOps pipelines for oil spill detection with multi-sensor SAR and optical data.
  • Engineered satellite preprocessing workflows using Sen2Cor, Acolite, and SNAP/Snappy wrappers for GRD-to-Sigma0 processing.
  • Built large-scale multi-sensor datasets and trained lightweight segmentation architectures optimized for hardware-specific inference speed.
  • Led technical planning, CI/CD workflows, automated QA tools, and code quality standards for typed Python development and peer review.
  • Delivered advanced spectral analysis and spatial visualization tools for actionable georeferenced environmental insights.

Athens, Greece

Government geospatial authority responsible for national cartographic and aerial orthophotography operations.

Software Engineer - Geospatial Intelligence (Military Service)

Mar 2023 - Oct 2023

Responsibilities:
  • Developed an automated image declassification system to apply optical and spectral camouflage to sensitive military facilities.
  • Engineered large-scale aerial imagery processing with multiprocessing and tiled workflows for terabyte-scale datasets.
  • Implemented a GIS UI for spatial data management, camouflage output visualization, and quality control.
  • Applied strategic obfuscation techniques to preserve radiometric and texture consistency and reduce detectability.
4

Education

Geoinformatics Engineer (MSc)
Grade: 9.5 out of 10
Thesis:
Oil Spill Mapping in SAR Imagery via Deep Learning and Test-Time Domain Adaptation.
Specialization:
Remote Sensing, Data Science, Machine Learning, Deep Learning.
ECTS Credits:
90
Rural, Surveying and Geoinformatics Engineer (MEng)
Grade: 7.7 out of 10
Thesis:
Ship Detection on Remote Sensing Synthetic Aperture Radar Data via Deep Learning Techniques.
Specialization:
Remote Sensing, Data Science, Machine Learning, Deep Learning.
ECTS Credits:
300

Projects

Automated Land Cover Mapping System for Greece
Geospatial Deep Learning Engineer Oct 2025 - Present

Nationwide VHR land cover mapping pipeline combining DINO-based feature extraction, SAM boundary refinement, and active learning with expert-in-the-loop corrections.

SAR to SAR Co-registration Methodologies
Geospatial Deep Learning Engineer Mar 2025 - Present

High-precision co-registration system for multitemporal VHR SAR data with ARD generation and sub-pixel alignment across Spotlight, Stripmap, and Scan modes.

Intelligent Early Warning System for Oil Spill Detection
Geospatial Deep Learning Engineer Mar 2022 - Oct 2025

Near-real-time MLOps platform integrating SAR and optical data for oil spill detection, analytics, and decision support in marine environments.

Edge SpAIce Marine Plastic Detection
AI Research Engineer Jan 2025 - Jun 2025

Ultra-light edge AI segmentation architecture with pruning, transfer learning, and quantization for on-board marine plastic detection.

Ship Detection on Remote Sensing Synthetic Aperture Radar Data via Deep Learning Techniques
Student Researcher Nov 2020 - Feb 2022

The present project was conducted as part of my diploma thesis which focuses on the investigation of methods for the effective detection of ships in synthetic aperture radar satellite imagery utilizing deep learning techniques.

Publications

Automated Lunar Crater Mapping, Through a Deep CNN Architecture, from DEM Extracted Images

Deep CNN approach for automated crater extraction from DEM-derived imagery to support planetary mapping workflows.

Detecting Marine Pollutants using Sentinel-1 SAR and Sentinel-2 Optical Imagery

Multi-sensor Earth observation approach for marine pollutant detection using SAR and optical satellite imagery.