Aleksei Piianin

Senior Software Engineer

Stockholm, Stockholm County, Sweden24 yrs experience

Highly StableAI ML Practitioner

Key Highlights

30 years of experience in software engineering.
Expert in backend development and cloud-native architectures.
Published analytical series on technology industry patterns.

Stackforce AI infers this person is a Backend-focused Engineer with extensive experience in Fintech and SaaS industries.

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Skills

Core Skills

Backend DevelopmentData StreamingSystem DesignTechnical LeadershipSystem ArchitectureEngineering ManagementSoftware Development

Other Skills

GoBigQueryKinesisPub/SubS3Azure SynapseRustData IntegrationSystem ReliabilityPostgreSQLDynamoDBRabbitMQTerraformAWSDocker

About

I write about structural patterns in the technology industry - how systems accumulate invisible debt, why organizations repeat the same failures across decades, and what it takes to see a problem before it becomes a crisis. My analytical series «Anatomy of Breakthrough» is published on Substack. By day - Staff Software Engineer and Tech Lead with 30 years of experience building reliable, scalable, and high-performance systems. I specialize in backend development, distributed systems, and cloud-native architectures using Rust, Go, and Python. I've led engineering departments, scaled data platforms across AWS, GCP, and Azure, and implemented real-time and batch data pipelines for fintech and observability products. Known for cross-functional leadership, architectural vision, and cultural awareness, I help teams thrive in agile and product-driven environments. 🔹 Areas of expertise: • Backend Architecture (Rust, Go, Python) • Data Streaming (Kinesis, PubSub, Kafka) & Data Lakes (S3, BigQuery, Snowflake) • Cloud Infrastructure (AWS, GCP, Azure, Terraform, K8s) • System Design, Mentorship, and Organizational Growth Always open to staff+ level roles where I can combine hands-on engineering with technical leadership.

Experience

24 yrs

Total Experience

3 yrs 10 mos

Average Tenure

1 yr

Current Experience

Mimo

Senior Software Engineer

Apr 2025 – Present · 1 yr · Stockholm County, Sweden

Validio

Senior Software Engineer

Dec 2021 – Apr 2025 · 3 yrs 4 mos · Stockholm, Stockholm County, Sweden

🔹 Refactored and optimized core Go services, significantly improving maintainability and runtime performance.
🔹 Designed and developed connectors for BigQuery, Databricks, Kinesis, Pub/Sub, S3, and Azure Synapse in Go, enabling flexible data integration pipelines.
🔹 Built high-performance data stream processors and validators in Rust, enhancing system reliability and observability.
🔹 Added support for Protobuf, Avro, and Parquet formats for seamless data compatibility.
🔹 Drove initiatives around cross-team communication and organized internal hackathon (“Baby Step”).
Tech stack: Rust, Go, Python, Apache Arrow, GraphQL, gRPC, PostgreSQL, Redis, Docker, Kubernetes, Terraform, Azure, GCP, AWS, Snowflake, Tableau

GoBigQueryKinesisPub/SubS3Azure Synapse+5

P.f.c.

Tech lead

Sep 2019 – Nov 2021 · 2 yrs 2 mos · Stockholm, Stockholm County, Sweden

🔹 Designed and delivered microservices for money transfers, subscriptions, and savings accounts.
🔹 Introduced an event-driven architecture to improve scalability and reduce system complexity.
🔹 Migrated card processing from Wirecard to Marqeta with minimal disruption.
🔹 Aligned feature development with business goals, improving delivery speed and system reliability.
Tech stack: Go, PostgreSQL, DynamoDB, RabbitMQ, Terraform, AWS, Docker, Datadog, GitHub, Event-driven architecture

GoPostgreSQLDynamoDBRabbitMQTerraformAWS+3

Spacetab

Staff Software Engineer

Oct 2017 – Aug 2019 · 1 yr 10 mos

🔹 Advised engineering teams on architectural and process improvements.
🔹 Built user identity/authentication services using ORY.sh stack for internal platforms.
🔹 Designed qualification and examination platforms for Worldskills Russia, used nationwide.
Tech stack: Rust, Go, Python, C++, PostgreSQL, Redis, Docker, Kubernetes, OAuth, ORY Hydra/Oathkeeper, ZeroMQ

GoPostgreSQLRedisDockerKubernetesBackend Development+1

Open mobile platform

Head of Engineering Department

Jul 2016 – Sep 2017 · 1 yr 2 mos · Innopolis, Russian Federation

🔹 Led 14-person cross-functional team to develop a corporate OS based on Sailfish OS.
🔹 Designed backend systems for SSO, encrypted backup, and corporate repositories.
🔹 Created a scalable private cloud infrastructure and introduced Tatar language support to the OS.
🔹 Acted as system architect, technical product owner, and team lead.
Tech stack: Go, PostgreSQL, Sailfish OS, Encrypted S3, Agile, OAuth, CI/CD

GoPostgreSQLSailfish OSOAuthCI/CDTechnical Leadership+1

Metaquotes software

Head of Engineering Department

May 2005 – Jul 2016 · 11 yrs 2 mos

🔹 Built and managed a high-performing engineering team (16+ engineers).
🔹 Architected and delivered TeamWox (groupware suite with 15+ modules).
🔹 Developed async HTTP engine (100K req/sec), VoIP server, and MetaTrader VPS infrastructure.
🔹 Refactored MQL5.com, improving response time 10×; launched MetaTrader 4 on Windows Mobile.
Tech stack: C++, Proprietary Protocols, Async HTTP, VoIP, MetaTrader, TeamWox, In-memory DBs

C++VoIPAsync HTTPMetaTraderEngineering ManagementSystem Architecture

Freelance / consulting roles

Senior / Lead Engineer

Jan 2000 – Apr 2005 · 5 yrs 3 mos

🔹 Delivered custom systems for finance, telecom, and public sector clients in Russia and abroad.
🔹 Built proprietary frameworks, websites, data visualizers, and SPAs.
🔹 Led small teams and served as trainer/consultant.
Tech stack: PHP, JavaScript, Java, Firebird, Oracle, MySQL, XML, HTML/CSS

PHPJavaScriptJavaMySQLSoftware Development

Early career

Software Developer / Consultant

Sep 1996 – Jan 2000 · 3 yrs 4 mos · Kazan, Russia

🔹 Delivered projects for regional government, publishers, and ISPs (e.g., Tatarstan OnLine).
🔹 Created web visualizers, SPAs, and early AI-related tools (neural nets, 3D models).
🔹 Developed 50+ automation screens for SCADA systems.
Tech stack: C++, PHP, JavaScript, MySQL, SCADA, XML, RS-232

C++PHPJavaScriptMySQLSoftware Development