Data Compression Engineer - Europe
Cyferd · Helsinki, Uusimaa, Finland
- Hybrid
- Full-time
- $120,000 / year
- Helsinki, Uusimaa, Finland
Job highlights
- Compress large image files for blockchain storage.
- Preserve metadata and verification for auditability.
- Optimize storage footprint and processing speed.
- Engineer bitstreams and file formats for efficiency.
- Collaborate with backend and blockchain teams.
About the role
About Cyferd
Cyferd is a fast-growing technology company offering a Composable Solutions Platform that enables businesses to create interconnected applications easily. We develop innovative solutions designed to help organisations work smarter, faster, and more efficiently. As we scale, we are looking for an experienced and driven individual to help improve how large volumes of data are processed, stored, and verified across our platform, supporting secure and efficient enterprise solutions.Role Overview
We are focused on improving how high-resolution files are prepared for our Immutable Audit Trail (IAT), reducing storage footprint while preserving the metadata and verification needed for long-term traceability. This role sits at the intersection of media processing, data compression, and cryptographic integrity. The objective is to ensure that large image files and related data can be compressed efficiently without losing the metadata and verification structure required for long-term auditability. You will be responsible for improving how image data is prepared for blockchain-backed storage, making files smaller, faster to process, and easier to verify while maintaining full traceability and integrity across the platform. We are looking for someone who understands image codecs, bitstream optimisation, and how to balance compression performance with secure data retention.Key Responsibilities
Image Compression & Optimisation
- Optimise high-resolution image files for secure long-term storage
- Improve compression efficiency while preserving critical metadata
- Work with image codecs such as HEIC, JPEG XL, and similar formats
- Reduce file size without affecting integrity or verification requirements
Data Structuring & Storage Efficiency
- Design efficient methods for preparing media files for blockchain-backed storage
- Improve how compressed data is structured for validation and retrieval
- Support strategies that minimise on-chain storage requirements
- Help define best practices for handling high-volume media assets securely
Bitstream & Format Engineering
- Work with low-level file structures and bitstream manipulation
- Improve encoding efficiency across image-heavy workflows
- Maintain metadata retention within compressed files
- Ensure compatibility between compression methods and verification systems
Platform Integration
- Work closely with backend, blockchain, and verification teams
- Support the wider Immutable Audit Trail by improving file readiness for storage
- Contribute to technical decisions around data efficiency and traceability
- Improve reliability across file processing and retrieval workflows
What You Bring
Essential
- Strong experience with data compression and optimisation techniques
- Deep understanding of image codecs such as HEIC, JPEG XL, or similar formats
- Experience with bitstream manipulation and low-level file structures
- Strong understanding of metadata preservation within compressed files
- Strong engineering capability in Python, C++, Rust, or similar
- Strong problem-solving and algorithmic thinking skills
Desirable
- Experience working with blockchain-backed storage systems
- Knowledge of Merkle Trees, hashing systems, or cryptographic verification methods
- Experience with Protocol Buffers, FlatBuffers, Avro, or similar serialisation methods
- Exposure to high-throughput or low-latency data environments
- Background in media processing, streaming, or storage optimisation systems
Key Attributes
- Strong attention to detail and technical precision
- Comfortable working with complex data optimisation challenges
- Able to balance performance, storage efficiency, and system integrity
- Strong collaboration skills across engineering and infrastructure teams
- Focused on building reliable long-term solutions for enterprise-scale systems
Success Criteria
- Reduced storage footprint of high-resolution files across the platform
- Reliable preservation of metadata required for audit and verification
- Improved efficiency of data prepared for immutable ledger storage
- Strong compatibility between compression workflows and blockchain systems
- Long-term improvements in storage cost, retrieval speed, and data integrity
Summary
This role is ideal for someone who enjoys solving technical challenges around compression, storage efficiency, and data integrity. You will play an important part in ensuring that large, high-value files can be stored securely and efficiently without compromising the traceability and trust required across our platform.Key skills/competency
- Data Compression
- Image Codecs
- Bitstream Manipulation
- Metadata Preservation
- Python
- C++
- Rust
- Blockchain Storage
- Merkle Trees
- Algorithmic Thinking
Skills & topics
- Data Compression Engineer
- Data Compression
- Image Optimization
- Bitstream Manipulation
- Metadata Preservation
- Blockchain Storage
- HEIC
- JPEG XL
- Python
- C++
- Rust
- Algorithm
- Remote Europe
- Full-Time
How to get hired
- Tailor your resume: Highlight experience with data compression, image codecs (HEIC, JPEG XL), and bitstream manipulation. Quantify achievements in reducing storage footprint.
- Showcase technical skills: Detail proficiency in Python, C++, Rust, and any experience with blockchain, hashing, or serialization formats.
- Address specific requirements: Emphasize your problem-solving abilities, algorithmic thinking, and understanding of metadata preservation.
- Prepare for technical interviews: Be ready to discuss complex data optimization challenges and how you'd approach them.
Technical preparation
Master image codecs like HEIC and JPEG XL.,Practice bitstream manipulation and file structures.,Implement compression algorithms in Python or C++.,Study metadata preservation techniques for images.
Behavioral questions
Describe a complex data optimization challenge faced.,How do you balance performance and integrity?,How would you collaborate with blockchain engineers?,Detail your approach to rigorous testing.
Frequently asked questions
- What are the key technical challenges for a Data Compression Engineer at Cyferd?
- The main technical challenges for a Data Compression Engineer at Cyferd involve optimizing high-resolution image files for secure, long-term storage on a blockchain. This includes reducing storage footprint, preserving critical metadata and verification structures, and ensuring efficient compression without compromising data integrity or traceability across the platform.
- What is Cyferd's Immutable Audit Trail (IAT) and how does this role support it?
- Cyferd's Immutable Audit Trail (IAT) is a system designed for secure and efficient enterprise solutions. As a Data Compression Engineer, you will directly support the IAT by improving how large image files and related data are compressed and prepared for blockchain-backed storage, ensuring their integrity and traceability for long-term auditability.
- What specific image codecs are most relevant for this Data Compression Engineer role?
- The role specifically mentions experience with image codecs such as HEIC, JPEG XL, and similar formats. A deep understanding of these, along with their bitstream optimization and metadata preservation capabilities, is crucial for success in this position at Cyferd.
- What programming languages are preferred for the Data Compression Engineer position at Cyferd?
- Cyferd is looking for strong engineering capability in languages like Python, C++, or Rust. Proficiency in one or more of these languages is considered essential for developing and implementing data compression and optimization solutions within their platform.
- Does this Data Compression Engineer role involve working with blockchain technologies?
- Yes, this role is at the intersection of data compression and cryptographic integrity, specifically focusing on preparing data for blockchain-backed storage. Experience with blockchain-backed storage systems, Merkle Trees, and hashing systems is considered desirable.
- What does Cyferd do as a company?
- Cyferd is a fast-growing technology company that provides a Composable Solutions Platform. This platform enables businesses to create interconnected applications easily, helping organizations work smarter, faster, and more efficiently with innovative solutions.
- What is the work arrangement for the Data Compression Engineer role at Cyferd?
- The Data Compression Engineer position at Cyferd is a fully remote role, open to candidates located anywhere in Europe. This provides flexibility and the opportunity to work from your preferred location within the continent.