Appunite

Appunite is a Warsaw-based engineering firm founded in 2015 that specializes in Elixir development and full-stack product delivery. The company employs a small, senior-focused team—no junior developers without mentorship—and works exclusively with engineers it has directly vetted and hired. Unlike traditional outsourcing, Appunite does not use offshore or contractor networks; its people are permanent staff who integrate as extensions of client engineering teams.

The firm has shipped systems at unusual scale for an Elixir shop: a 200M monthly active user e-commerce platform maintained by fewer than 10 developers, a 14M-user system run by 4 people, and zero-downtime deployments across hundreds of production releases. José Valim, Elixir's creator, has partnered with Appunite on complex implementations and recommended the team directly. Appunite contributes to Elixir core, maintains open-source tools widely used by the community, and regularly speaks at ElixirConf and other industry conferences.

The company positions itself as a solution for companies already running Elixir systems that are underperforming—often because they were built by teams that learned Elixir syntax but not Elixir architecture. Appunite has documented cases of diagnosing memory leaks in GenServers, refactoring supervision trees, and fixing distributed system consistency issues that other Elixir consultants could not solve. The firm also takes on greenfield work: building MVPs from scratch and modernizing legacy codebases migrating from Rails, Node.js, or other stacks.

Services and capabilities

Appunite offers three primary engagement models. Product Delivery Team is a fully-owned squad that ships features, products, or roadmaps end-to-end. The squad handles everything from product discovery and design through deployment, monitoring, and ongoing operations. Teams typically include an Elixir specialist, frontend/mobile engineers (React, Next.js, Swift, Kotlin, Flutter), UX/UI designers, a product manager or growth lead, QA, and DevOps. Pricing runs on monthly retainer or time-and-materials; the company commits to weekly demos, milestone reviews, and published KPIs including velocity, uptime, crash-free rates (99.8–99.9%), lead time (~3 days), and MTTR (~30 minutes).

Team Augmentation places individual senior specialists—developers, designers, AI engineers, product managers—into your existing team. Engagement is month-to-month minimum with flexibility to scale up or down. The model emphasizes integration: augmented staff attend standups, participate in team events, and operate under the same practices as your internal team. Retainers start at $11k per developer per month and include no hourly billing surprises. Appunite maintains that rotation is avoided; the same people stay with a project for continuity.

Elixir Optimization and Auditing targets existing Elixir systems. A typical engagement begins with a week-long system audit (codebase analysis, architecture review, deployment patterns) followed by critical fixes (weeks 2–4), architecture refactoring (weeks 5–8), and ongoing knowledge transfer. This service is marketed to CTOs whose internal teams are competent but lack mastery of OTP, LiveView, or distributed systems patterns at scale.

Across all services, the technology stack includes Elixir and Phoenix LiveView (core), React and Next.js (frontend), Android (Kotlin), iOS (Swift), Flutter and React Native (mobile hybrid), Python and Java (backend alternatives), and emerging AI work with RAG, agents, and LLM workflows.

Notable work

Appunite lists four main case studies, though the source material is sparse on details. GLS/NXT (a global parcel delivery company) underwent a React/Next.js migration that achieved 4.4/5 customer satisfaction and improved scalability. Zumba Fitness launched a high-profile mobile app with strong customer satisfaction; Appunite built it from inception. Allegro Lokalnie (Allegro's C2C marketplace spinoff) benefited from Appunite team integration and is cited as a key reference. Minerva is listed as a platform built from inception to scale.

Other named clients include KingsChat (described as having "extensive product and userbase"), and earlier unnamed work for Bundestag (German federal parliament) on a security-sensitive product. The company claims to have worked with 16M unique monthly visitors on an unnamed e-commerce platform with fewer than 10 developers and a 14M-user system maintained by 4 people.

How they work

Engagements begin with a structured conversation: a 20-minute discovery call where scope, team size, timeline, and engagement model are discussed. For Product Delivery, onboarding includes ensuring engineers understand product context before writing code; unclear scope or blockers are escalated immediately to protect budget. For Team Augmentation, specialists are pre-prepared with context and integrate into client rituals (standups, retros, planning) within days. Monthly retainers are the preferred model; minimum commitment is one month, though shorter engagements are negotiated case-by-case. Appunite responds to inbound contact within 2 working days between 10:00–18:00 CET.

Team and credentials

The firm was founded in 2015. Specific team size is not disclosed, but the company emphasizes a "small, senior-focused" model—no rotation, no juniors without seniors, only permanent staff. The leadership and key engineers have earned direct recognition from José Valim and are regular speakers at ElixirConf. Appunite maintains active open-source contributions to Elixir core and peripheral libraries.

No specific ISO, SOC 2, GDPR, or HIPAA certifications are mentioned in the source material. No G2 or Clutch ratings with review counts are provided. The company does list Allegro, Zumba Fitness, and GLS/NXT as reference customers.