Apart from usual SEO techniques, use different promotion techniques to attract new visitors and to make them permanent readers/subscribers. By promotion techniques, I mean some kind of contests, visitor's participation, freebies and similar stuff.
I think blog RSS feed would help you to promote your blog apart from it you need to submit you blog in blog directories. Good links form blog commenting would increase blog ranking. Use Social media just like twitter , facebook, linkedin stumbleupon etc. You will find lot of difference in blog visitors in few days.
Make a facebook fanpage and bring a healhy number of fans. Then whenever you post anything on your blog take the link and post it on your facebook fanpage. I hope it will bring some traffic to your blog.
For inviting more and more traffic, I prefer to social bookmarking and social networking sites. These are great source of traffic. Beside it using other seo channels would be good idea for increasing traffic.
You may like trying out paid traffic building plans for some time, such as the efficient Google AdWords as well as directly purchasing monthly based ads rentals packs offered on so many blogs and forums these days. If you continue to update your blog for some time, you will gradually get links helping your blog from SEO perspectives as well.
Web development related fields are very competitive indeed and for newly launched websites, there are usually some obstacles to remove always, such as ranking filters. You may also write a few articles and instead of publishing them on your own website, publishing them on a few select directories for temporary traffic boost.
In terms of social media, have you synced it up to Onlywire? If not, I would HIGHLY suggest this. It takes a bit of work to create all the necessary individual accounts, but once you do that it autosubmits to all the major social media outlets and is very useful for traffic!