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Frontend Developer Intern

Opera · Posted Nov 10, 2026

Open

Wroclaw, Lower Silesia, Poland
Hybrid
Full-time · Intern
0+ years

Frontend Developer Intern

Opera · Posted Nov 10, 2026

Open

Wroclaw, Lower Silesia, Poland
Hybrid
Full-time · Intern
0+ years

Summer Internship 2027 - Gothenburg

Opera · Posted Nov 9, 2026

Open

Gothenburg, Väst Götaland, Sweden
On-site
Internship · Intern
paid, full-time opportunity

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Join Opera's Summer Internship Program in Gothenburg and gain hands-on experience working on products used by millions of people worldwide in software development, R&D, QA, product, and design.

Responsibilities

Contribute to real projects alongside experienced colleagues
Frontend & Backend Development using TypeScript, Java, and more
R&D using Rust, C++, TypeScript, and emerging technologies
DevOps involving cloud infrastructure, automation, and AWS
Quality Assurance (QA) testing and improving product quality

Requirements

computer science
software engineering
product design
related field
Chalmers University of Technology

Skills

TypeScript Java Rust C++AWS Swift

Benefits

paid internship
social activities
board game nights

Principal Engineer, On-Device Inference & GPU Kernels

Opera · Posted Nov 9, 2026

Open

Wrocław, Poland +1 more
Hybrid
Principal

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Lead high-performance, on-device AI inference and GPU optimisation for Opera's browser.

Locations (2)

Wrocław, Poland
Warsaw, Mazovia, Poland

Responsibilities

Develop speculative decoding and GPU kernels
Design quantisation schemes
Optimize memory and caching
Build performance telemetry and regression gates
Expose runtime hooks for research

Requirements

Nice to have: Contributions to llama.cpp
Nice to have: ggml
Nice to have: vLLM
Nice to have: SGLang
Nice to have: ONNX Runtime

Skills

CUDA Metal/MLX Vulkan

Principal Engineer, AI Security & Model Internals

Opera · Posted Nov 9, 2026

Open

Wrocław, Poland +1 more
Hybrid
Principal

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Principal Engineer to join Opera’s AI & Browser Innovation Hub in Wrocław, focusing on model internals and AI security.

Locations (2)

Wrocław, Poland
Warsaw, Mazovia, Poland

Responsibilities

Build tooling to inspect open-weight models layer by layer and head by head
Scan third-party weights and fine-tunes for backdoors, trojans and hidden behaviour
Design monitors that read a model's internal state at critical moments and escalate to a second model for verification
Red-team agentic browsing and harden it through model-level work
Build fine-tuning pipelines (LoRA and beyond) that resist data poisoning

Requirements

Nice to have: mechanistic interpretability
Nice to have: sparse autoencoders
Nice to have: circuit analysis
Nice to have: probing
Nice to have: published or open-source work

Senior Client Solutions Manager, Performance Advertising

Opera · Posted Nov 9, 2026

Open

Barcelona, Catalonia, Spain
Senior
5+ years

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Senior Client Solutions Manager to drive performance advertising growth and manage advertiser relationships.

Responsibilities

Manage advertiser relationships and identify opportunities to drive campaign performance and account growth
Monitor and analyze performance advertising campaigns and develop optimization strategies
Take ownership of campaign-related operational workflows and coordinate launches
Act as a key operational partner to Sales and internal stakeholders
Serve as the primary point of contact for key advertisers and deliver strategic guidance

Skills

DSP platforms programmatic advertising campaign optimization performance metrics CPA CPI ROAS conversion rates advertising technologies

Client Solutions Manager, Performance Advertising

Opera · Posted Nov 9, 2026

Open

Tel Aviv, Tel Aviv, Israel +1 more
5+ years

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Manage and develop relationships with advertisers to drive performance advertising growth across Israel and the US.

Locations (2)

Tel Aviv, Tel Aviv, Israel
United States

Responsibilities

Manage and develop relationships with an existing portfolio of advertisers
Identify and pursue account growth opportunities
Work closely with advertisers to understand business objectives
Collaborate with Sales, Ad Operations, and internal stakeholders to coordinate campaign execution
Proactively source, pitch, and close new advertiser partnerships

Skills

account management client solutions customer success business development

Head of AdTech Solutions Engineering

Opera · Posted Nov 9, 2026

Open

Barcelona, Catalonia, Spain
Hybrid
Full-time · Director

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We are looking for a Head of AdTech Solutions Engineering to establish, architect, and scale the technical integration and attribution capabilities across our global performance advertising business. This is a hands-on leadership position combining technical expertise, operational ownership, and process & team development.

Responsibilities

Lead end-to-end technical onboarding and integration of advertisers, from requirements gathering and solution design to implementation, testing, campaign launch, and troubleshooting.
Own the implementation and optimization of measurement and attribution solutions, including app install and event tracking via MMPs, as well as web conversion tracking via pixel and server-to-server (S2S) integrations.
Partner with Sales, Account Management, Ad Operations, and cross-functional teams to translate advertiser requirements into effective technical solutions that ensure accurate tracking, attribution, and campaign measurement.
Collaborate with internal and external engineering & technical teams across international locations to identify integration gaps, resolve complex issues, improve existing solutions, and develop scalable processes.
Provide hands-on technical leadership, share expertise with team members, and establish best practices for advertiser onboarding, integration quality, documentation, and ongoing technical support.

Requirements

Nice to have: AppsFlyer

Skills

Frontend Developer

Opera · Posted Nov 9, 2026

Open

Wrocław, Poland
Full-time

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Build and improve browser extensions and AI-powered interfaces for Opera AI Chat.

Responsibilities

Develop and maintain browser extensions using React or Svelte
Build interfaces and workflows for AI agent interactions
Implement browser extension features and functionality
Collaborate with product managers, designers, and engineers
Test, debug, optimize, and maintain frontend applications

Skills

JavaScript TypeScript React Svelte browser extensions browser APIs AI-powered development tools API integration asynchronous operations Cursor GitHub Copilot

Senior Administrator/Assistant Manager (6-12 month FTC)

Opera · Posted Nov 5, 2026

Open

Guernsey, Guernsey
On-site
Contract · Senior
5+ years

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The purpose of the role is to deliver excellent client administration to a portfolio of client trust and company structures and to support the Private Wealth Team as required. The job holder will liaise closely with the Trust team, clients and intermediaries.

Responsibilities

Administration of a portfolio of entities including e-mail and telephone communication with clients and intermediaries
Transactional work
Payments
Administration of a wide and varied range of asset types
Drafting of minutes/resolutions and source documents for presentation by the Team Leader to the Client Committee

Requirements

Minimum 5 GCSE’s (or equivalent) with English & Mathematics at Grade C or above
Professional Qualification e.g. STEP, CGI, ACCA

Skills

Fiduciary Services Microsoft Outlook Microsoft Word Microsoft Excel Written and verbal communication skills Attention to detail

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