Senior Software Architect - Distributed Cloud & AdTech

Sigma Software; Województwo mazowieckie; Hybrid; PLN 260,000 - 380,000; Full time

Job summary

Sigma Software’s AdTech Business Unit is seeking a Software Architect to design scalable, high-load distributed systems and cloud-native platforms powering programmatic advertising worldwide.

You will drive architectural decisions, mentor engineers, and collaborate with customers and stakeholders on pre-sales activities, architecture workshops, and PoCs, while shaping the technical direction across multiple initiatives and teams.

Qualifications

• 7+ years of commercial software development experience.
• 3+ years in architecture or technical leadership roles.
• Hands-on with two or more of Golang, Rust, Node.js, C++.
• Designing high-load, low-latency distributed systems.
• Strong knowledge of microservices, messaging, caching, API design.
• Experience with Docker, Kubernetes, Helm; cloud platforms (AWS/GCP/Azure).
• REST, gRPC, WebSockets, and event streaming (Kafka, Pub/Sub).
• Customer-facing technical consulting and pre-sales experience.
• Strong communication, presentation, and stakeholder management.
• Upper-Intermediate English level.

Responsibilities

• Define and drive architecture of scalable AdTech solutions and cloud platforms.
• Own architectural decisions aligned with business objectives and product strategy.
• Lead technical discovery, architecture assessments, and solution design.
• Translate business requirements into scalable, secure, future-proof solutions.
• Drive pre-sales activities: customer presentations, PoCs, estimations.
• Showcase AdTech expertise to win new business opportunities.
• Identify opportunities to expand engagements through architecture advisory.
• Establish architectural standards, governance, and best practices.
• Guide engineering teams on implementation, performance, and scaling.
• Evaluate emerging technologies and AI-driven solutions.
• Mentor engineers and promote knowledge sharing.

Skills

Distributed systems

Cloud-native architectures

Golang

Rust

Node.js

C++

English communication

Tools

Docker

Kubernetes

Helm

AWS

GCP

Azure

Kafka

Job description

Sigma Software’s AdTech Business Unit is seeking a Software Architect to design scalable, high-load distributed systems and cloud-native platforms powering programmatic advertising worldwide.

You will drive architectural decisions, mentor engineers, and collaborate with customers and stakeholders on pre-sales activities, architecture workshops, and PoCs, while shaping the technical direction across multiple initiatives and teams.